CCNA 4 – INTRODUCING ROUTING AND SWITCHING IN THE ENTERPRISE
FINAL 3 EXAM
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What is a function that is associated with the access layer in a hierarchically designed
network?
 performs routing and packet manipulation
 supplies redundancy and failover protection
 provides a high-speed, low-latency backbone
 serves as a network connection point for IP telephony devices
What can be broadcast over the wireless network to help a user connect to the network and
use wireless services?
 SSID
 WEP keys
 VLAN parameters
 WPA encryption keys
What is the advantage of choosing EasyVPN for a new VPN implementation?
 to provide encryption algorithms unavailable in other systems
 to ensure that remote workers actually use the VPN for connectivity
 to allow a greater variety of network devices to be used for VPN connections
 to simplify the configuration tasks for the device that is used as the VPN server
A company has help desk staff that is not highly trained in VPNs. What two features or technologies
must the network designer identify as training needs in order for the help desk to support secure
remote access for teleworkers? (Choose two.)
 QoS operation
 VLAN configuration
 tunneling protocols
 IPv6 and IPv4 dual stack
 encryption algorithms
 Frame Relay configuration
Which statement best describes the VPN feature called split tunneling?
 It creates separate pathways for different VLANs.
 It creates two tunnels, one for user traffic and one for management traffic such as CDP
and SNMP.
 It allows user traffic that is destined for the corporate network to travel across the
VPN tunnel, while traffic destined for the Internet travels through the local LAN of
the VPN client.
 It allows separate tunnels so that high priority traffic, such as voice and video, uses the
higher bandwidth tunnel, while all other user traffic travels on the lower bandwidth
tunnel.
The network infrastructure at the headquarters of an organization consists of Cisco network devices
that are running RIPv1. As part of an upgrade project, a portion of the company backbone will be
increased to 10 Gb/s and needs to support unequal cost load balancing between routers. The IP
addressing scheme is also changing and needs to support VLSM and CIDR. Which routing protocol
should be selected for the network?
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BGP
EIGRP
OSPF
RIPv2
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A NetworkingCompany engineer is on a support call resolving technical problems for a client
network. After the issue is resolved, the engineer also provides a training session for the
network support staff. What role is the engineer filling on the networking company team?
 post-sales field engineer
 pre-sales engineer
 network designer
 account manager
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Refer to the exhibit. What can be concluded from the output that is shown?
 MDF_R1 has a MAC address of 2294:300F:0000.
 MDF_R1 is connected through FastEthernet0/1 to C2960-24TT-L_IDF1.
 Device C2960-24TT-L_IDF1 is running Cisco IOS Software Release 12.2(25)SEE2.
 MDF_R1 is installed in the main distribution facility on floor 24 of building L.
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Refer to the exhibit. In the Cisco IOS filename that is shown, what is signified by the
underlined portion?
 version
 platform
 file format
 feature set
A network administrator has removed a router from the network for maintenance. A new
Cisco IOS software image has been successfully downloaded to a server and copied into the
flash of the router. What should the administrator do before placing the router back into
service?
 Delete the previous version of the Cisco IOS software from flash.
 Copy the new IOS into NVRAM to create a backup copy.
 Restart the router and verify that the new image starts successfully.
 Verify the free space available on the router to store the new IOS image.
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What information does an administrator require before saving the running configuration from
a router to a TFTP server?
 router IP address and the name of the configuration file in NVRAM
 TFTP server IP address and the size of the configuration file in RAM
 TFTP server IP address and the name of the configuration file that will be saved
 router IP address, size of the file and name of the configuration file on the TFTP server
 TFTP server IP address, the router IP address, and the router interface through which
the file will be loaded
A network administrator needs to transfer an IOS image to a router using a TFTP server. What
should be verified prior to beginning the transfer process?
 The TFTP server must connect to the router via a serial connection.
 Connectivity between the TFTP server and the router should have been established.
 The TFTP server and the router must be on different networks for the transfer.
 The TFTP server software must be the same version as the Cisco IOS software.
A network technician needs to install a four-port switch module in an operational Cisco 1841
router that has an available HWIC slot. What should the technician do first?
 Turn off the power to the router before installing the new module.
 Install the hot-swappable four-port switch module directly into slot 1 of the 1841.
 Move the existing WIC-2T module to slot 1 and install the four-port module in slot 0.
 Shut down all Fast Ethernet ports on the router until the switch module installation is
complete.
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Refer to the exhibit. An administrator installs a WIC-2T module into a Cisco 1841 router.
Attempts to configure the S0/0/0 interface are unsuccessful. As a first step in troubleshooting
the failure, the administrator issues the show version command. What is a possible reason for
the failure?
 The WIC was not physically installed properly.
 The WIC was installed into slot 1 instead of slot 0.
 The interface type and number are invalid on an 1841.
 The configuration register is the wrong value for adding new modules.
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Refer to the exhibit. Which type of application communication model best describes this
network?
 client-client
 client-server farm
 client-enterprise edge
 client-enterprise server
If traditional phones are used when introducing VoIP to a network, what component would be
required to convert the analog voice from traditional telephone signals into IP packets?
 Multipoint control unit
 Power over Ethernet switches
 a router that acts as a voice gateway
 Cisco Unified Communications Manager
Which characteristic should be considered by a network designer when implementing a VoIP
solution?
 VoIP traffic is generally classified as low priority.
 VoIP centrally routes calls in the same manner as a traditional PBX.
 VoIP traffic is highly reliable because of retransmission of dropped packets.
 VoIP can make use of QoS features to help reduce interruptions in communication.
What supports the ability of streaming video to be sent to a group of viewers simultaneously
without congesting the entire network?
 traffic queues
 multicast
 multiple Layer 4 sessions
 high priority from QoS
Which feature relies on prioritization of network traffic and is used to ensure successful
delivery of real-time services?
 security
 reliability
 redundancy
 quality of service
When implementing an IP telephony solution, why should VLANs be used?
 to allow the use of a single IP gateway
 to separate voice from data traffic for ease of prioritization
 to allow the PBX to use VLAN IDs to filter both voice and data traffic
 to allow connectivity between traditional phone devices and IP-based telephony
devices
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Refer to the exhibit. What problem is associated with the the addressing scheme of the
network?
 The WAN links need IP addresses from a different major network.
 The R1 LAN is incorrect because subnet zero cannot be used with VLSM.
 The WAN link IP address that connects R1 to R3 has an incorrect mask.
 The R1 to R3 and R1 to R2 WAN links have IP addresses that overlap.
 The WAN IP address that connects R1 to R2 overlaps with the R3 LAN IP addresses.
A customer of a large multisite organization has asked a network engineer to compare a new
IPv4 addressing strategy with an IPv6 strategy for their new network implementation. Which
tool is appropriate for testing and comparing both addressing schemes?
 NBAR
 Cisco SDM
 Network Assistant
 network simulation tool
A network administrator wants to configure a router that is running EIGRP so that it will
advertise a route that will summarize the networks that are shown. Which network will
summarize only these networks?
192.168.12.0/24
192.168.13.0/24
192.168.14.0/24
192.168.15.0/24
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192.168.0.0/16
192.168.0.0/20
192.168.8.0/21
192.168.12.0/22
192.168.16.0/22
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A school district decides to use the 172.30.0.0/16 network for its LAN networks. The network
administrator must create an addressing scheme to support 500 users in the admin office, 200
at the high school, 60 at the elementary school and 28 at the district office. Which VLSM
addressing scheme will correctly address the network with minimal waste?
 172.30.0.0/20 admin
172.30.1.0/21 high school
172.30.1.8/22 elementary
172.30.1.12/26 district
 172.30.0.0/22 admin
172.30.4.0/23 high school
172.30.5.0/24 elementary
172.30.6.0/26 district
 172.30.0.0/23 admin
172.30.2.0/24 high school
172.30.3.0/26 elementary
172.30.3.64/27 district
 172.30.0.0/23 admin
172.30.2.0/24 high school
172.30.3.0/25 elementary
172.30.3.127/26 district
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Refer to the exhibit. All router interfaces are up and RIP version 2 is configured as the routing
protocol. The users in networks 172.16.8.0 /24 and 172.16.9.0/24 are not able to reach users
in the 172.16.16.0/24 network. The network administrator examines the routing tables and
finds that even though all directly connected networks have been entered in the RIP
configuration, not all routes are present. What is the most likely cause of this problem?
 Autosummarization is enabled on all routers.
 The split-horizon rule is disabled on all routers.
 RIP version 2 does not support classless routing.
 RIP version 1 should have been used instead of version 2.
 The 10.10.4.0 networks should be replaced with 192.168.4.0 networks.
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Which two processes allow a smooth transition from IPv4 to IPv6? (Choose two.)
 IPSec
 tunneling
 dual stack
 authentication
 anycast addressing
 header simplification
Which two values represent valid IPv6 addresses? (Choose two.)
 ::::1
 FF01::1
 0:0:0:0:0:0:0:1
 2001:DB8::47::2A4
 2031:0000:04AC:3400:FFE3:0
A network administrator of a middle-sized company is asked to upgrade the routing protocol
of the network to support VLSM and route summarization. The current company network
contains both Cisco and non-Cisco routers. Which routing protocol should be used for the
upgrade?
 BGP
 RIPv1
 RIPv2
 EIGRP
During prototype testing, a LAN switch fails. As the switch re-initializes using the default
parameters, a port that has a PC attached transitions to the forwarding state within one
second. What protocol would support this feature?
 STP
 RIP
 BGP
 VTP
 RSTP
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Refer to the exhibit. Based on the output, which statement is correct?
 Switch2 is the root bridge.
 Traffic will use Fa0/1 as an alternative link if Gi0/1 is busy.
 All traffic with a destination on another switch will exit via Gi0/1.
 The port cost on Gi0/1 has been changed from its default settings.
 Interface Fa0/1 on Switch2 has no role in the operation of spanning tree.
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When designing a prototype network for a new server farm, a network designer chooses to
use redundant links to connect to the rest of the network. Which business goal will be
addressed by this choice?
 security
 scalability
 availability
 manageability
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Refer to the exhibit. To provide better customer service, the network management decides to
implement a new server farm, which is located in a data center. Which two technology
implementations will address the requirements for strict security policies to prevent
unauthorized access to the server farm? (Choose two.)
 Install firewalls and IDS capabilities on the network.
 Apply ACLs to permit only inbound TCP traffic to the servers.
 Apply filters that permit traffic only to required ports on the servers.
 Configure a flexible IP addressing structure that allocates a single subnet per VLAN.
 Configure a fast-converging routing protocol with authentication at the core layer.
 Create a management VLAN and provide access to the data center devices through
Telnet.
A wireless survey has been conducted before the deployment of a wireless network. What
would be the benefit of the survey?
 provides initial configuration of the access points
 determines the channel settings of the access points
 determines the security settings on the access points
 finds the optimal number and placement of access points
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Refer to the exhibit. What does the TOR router do with traffic that is destined for a web server
with an IP address of 172.18.10.24?
 The router sends the traffic out Serial 0/0/0.
 The router sends the traffic out all interfaces other than the one it came in on.
 The router places the packets into a queue until a better route is discovered via RIP.
 The router sends a request to neighboring routers for paths to the 172.18.10.0
network.
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A user in a large office calls technical support to complain that a PC has suddenly lost
connectivity to the network. The technician asks the caller to talk to nearby users to see if
other machines are affected. The caller reports that several immediate neighbors in the same
department have a similar problem and that they cannot ping each other. Those who are
seated in other departments have connectivity. What should the technician check as the first
step in troubleshooting the issue?
 the power outlet to the PC that is used by the caller.
 the trunks between switches in the wiring closet.
 the status of the departmental workgroup switch in the wiring closet.
 the cable that connects the PC of the caller to the network jack.
 the cable connection between a PC and a network outlet that is used by a neighbor.
A company would like to ensure that the failure of a single access switch does not disrupt
service to the mail servers located in the data center. What can be done to ensure maximum
connectivity to the mail servers?
 Enable CDP to ensure all neighboring devices are known.
 Create a separate RSTP specifically for the mail servers.
 Configure a routing protocol so that paths to all Layer 3 devices are cached.
 Install redundant access links between the servers and the access layer switches.
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Refer to the exhibit. An extended ACL has been created to deny traffic from the
192.168.35.0/24 network to the web server with IP address 209.165.201.15. According to
Cisco best practices, where should the ACL be applied?
 RTB Fa0/0 inbound
 RTC S0/0/1 inbound
 RTD Fa0/0 outbound
 RTC S0/1/0 outbound
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Refer to the exhibit. The named ACL "Managers" already exists on the router. What will
happen when the network administrator issues the commands that are shown in the exhibit?
 The commands overwrite the existing Managers ACL.
 The commands are added at the end of the existing Managers ACL.
 The commands are added at the beginning of the existing Managers ACL.
 The network administrator receives an error that states that the ACL already exists.
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A company is concerned with protecting internal e-commerce servers against external attacks.
An application layer firewall is installed at the network edge and a host-based IDS system is
installed on the internal LAN. What should be done to ensure a fast response and minimum
server downtime in the event of an external attack?
 Replace the host-based IDS with an IPS.
 Place the e-commerce servers in a DMZ.
 Install a logging server to monitor all attacks.
 Replace the application layer firewall with a stateful one.
Which two security best practices are recommended for a router deployed as a WAN
endpoint? (Choose two.)
 Turn off unnecessary services.
 Enable HTTP for web administration.
 Configure easy to remember passwords.
 Apply timeouts on VTY, AUX, and console ports.
 Enable Telnet access to allow for remote management.
Company XYZ requires a WAN solution that provides flexible bandwidth options and supports
one physical interface at the head office that would provide simultaneous connectivity to
various remote sites. The distance from each site should not make the solution more
expensive. Which WAN technology meets the requirements of the company?
 DSL
 cable
 Frame Relay
 T1 leased line
A technician adds the command Router(config-router)# variance 5 to a router using EIGRP as
the routing protocol. What is the result of entering this command?
 enables unequal cost load balancing
 adjusts the metric of all EIGRP routes to 5
 restricts the number of EIGRP feasible successor routes to 5
 activates the use of all K values in the composite metric calculation
 enables EIGRP equal cost load balancing over a maximum of 5 routes
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Refer to the exhibit. A pre-sales system engineer receives a diagram of the current WAN from
a customer. EIGRP is the routing protocol used on the WAN. Based on the default operation of
EIGRP, which statement is true about the routing table on router R1?
 There is a single route to the 192.168.16.0/24 LAN using the T1 connection.
 There is a single route to the 192.168.16.0/24 LAN using the DSL connection.
 There is a single route to the 192.168.16.0/24 LAN using the Metro Ethernet
connection.
 EIGRP installs all three routes to the 192.168.16.0/24 LAN and load balances the traffic.
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Which feature of network design and configuration would be considered a weakness?
 Choosing a flat network model.
 Choosing to implement an IPS instead of IDS.
 Choosing to disable Telnet and allow only SSH connections for remote access to the
core routers.
 Choosing not to broadcast the SSID for wireless access points.
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Refer to the exhibit. What can the field engineer conclude about the EIGRP authentication
between Router1 and Router2?
 Authentication will fail because only one key is configured.
 Authentication will succeed and EIGRP updates can be exchanged.
 Authentication will fail because the key chain names do not match.
 Authentication will fail because the key chain names must match the router names.
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Refer to the exhibit. A networking engineer is characterizing an existing network for a new
customer. The engineer issues a show running-config command on the R1 router to gather
configuration information. What is the engineer able to determine as a result of viewing the
output of this command?
 The R1 router has two specific routes to the main office LANs in the routing table.
 The default route for the R1 router points to the Edge1 router.
 The R1 router will load-balance traffic to the main office LANs by using both DSL and
Frame Relay.
 A connection through ISP-1 will be used to reach the main office LANs if the Frame
Relay network is unavailable.
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A network administrator has configured Frame Relay on a serial interface and issued the show
interfaces serial command. The output shows that the interface is up and the line protocol is
up. However, pings to the remote router across the link fail. What should the next step be to
ensure that the IP address of the remote router appears in the Frame Relay map table of the
local router?
 Configure the router using the no inverse-arp command.
 Ensure that the LMI type is correct for the circuit.
 Configure the router using the frame-relay map ip command.
 Verify that the remote router has Frame Relay encapsulation enabled.
What are two accurate descriptors of a DLCI? (Choose two.)
 Frame Relay Layer 2 address
 one DLCI allowed per local loop
 locally significant circuit endpoint
 signaling standard between DTE and DCE
 establishes the data transfer rate through a Frame Relay network
The main office of a NetworkingCompany customer currently connects to three branch offices
via three separate point-to-point T1 circuits. The customer network uses RIPv2 as the routing
protocol within both the LAN and the WAN. The account manager proposes a change to a
Frame Relay network because the costs are lower. A single local loop connection can be
installed at the main office with three separate PVCs to connect the branch offices. How can
the main office edge router be configured to enable the customer to continue to use RIP as
the WAN routing protocol?
 Enable Inverse ARP on the serial interface in order to learn the routes to the IP
addresses of the remote routers.
 To prevent the Frame Relay network from causing a routing loop, disable split horizon
on the serial interface.
 Create three separate point-to-point subinterfaces on the serial interface and assign
a different subnet IP address to each one.
 Configure the serial interface with a single interface DLCI number and create framerelay map statements for each remote site address.
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FINAL 4 EXAM
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What can be broadcast over the wireless network to help a user connect to the network and
use wireless services?
 SSID
 WEP keys
 VLAN parameters
 WPA encryption keys
 VPN authentication information
The network designer recommends using RSTP in the design of a new data center. There are
multiple redundant Layer 2 switches and links contained in the new design. What is the
benefit of using RSTP rather than STP in this situation?
 Redundant links are not blocked.
 Routing tables converge more quickly.
 Spanning Tree convergence times are reduced.
 Fewer redundant links are required to maintain connectivity.
Several key servers in an organization must be directly accessible from the Internet. What
addressing policy should be implemented for these servers?
 Use dynamic NAT to provide addresses for the servers.
 Place all of the servers in their own Class C private subnet.
 Use DHCP to assign addresses from the pool of Class B addresses.
 Assign static internal addresses and public external addresses to each of the servers.
During a review of the proposed bill of materials, an account manager of the network solution
company realizes that the systems engineer included a switch with lower cost and reduced
capabilities for the access layer than was originally specified by the network designer. When
questioned, the systems engineer responds that the switches specified by the designer cannot
be purchased within the budget limitations of the customer. Which action should the account
manager take?
 Inform the customer that the project budget must be increased.
 Inform the customer that the project cannot be completed given the unreasonable
budget constraints.
 Communicate any risks that are associated with the equipment substitution and
obtain customer approval to proceed.
 Because the customer is probably aware that the budget limitations will require lower
cost, less capable equipment, the account manager should do nothing.
A network designer has chosen to specify the use of a dedicated firewall appliance at the
perimeter of a large network. Why would the designer use a dedicated firewall rather than
using the Cisco IOS firewall feature set on the existing router?
 Traffic filtering is needed on the internal LAN.
 Multiple levels of access to the network are needed.
 The DMZ requires packet filtering and port blocking.
 *Heavy network traffic will be handled best by using a dedicated device.
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An administrator is charged with providing guaranteed quality of service for certain
applications. What technical requirement does QoS help to satisfy?
 *availability
 manageability
 security
 scalabilty
A network engineer is at a customer site. After resolving technical problems in the network,
the engineer provides a training session for the support staff. Which job function best fits the
activities of this network engineer?
 network designer
 account manager
 pre-sales engineer
 *post-sales field engineer
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Refer to the exhibit. What can be concluded from the output that is shown?
 MDF_2811 has a MAC address of 2294:300F:0000.
 *Device C3750-24_IDF2 is running Cisco IOS Software Release 12.3(23)SEE2.
 //A Cisco 3750 switch is connected to the FastEthernet1/0/1 port on MDF_2811.
 MDF_2811 is installed in the main distribution facility on floor 28 of building 11.
What is the purpose of a network baseline?
 to add access control capabilities to the network
 to reserve a spot in a rack for installing network equipment
 to create a configuration template for quickly configuring new equipment
 *to establish a point of reference for comparison with current performance
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Refer to the exhibit. The network administrator has used the Cisco Feature Navigator to
choose a Cisco IOS image to install on a router. Given the exhibited output of the show version
command, which statement is true about the capacity of the router to use this Cisco IOS
image?
 There is enough DRAM and flash.
 There is not enough DRAM and flash.
 There is enough DRAM but not enough flash.
 *There is not enough DRAM but enough flash.
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Which two pieces of information are needed before an IOS image may be loaded on a router
from a TFTP server? (Choose two.)
 *the IP address of the TFTP server
 the current name of the IOS image on the router
 the operating system of the TFTP server
 the name of the configuration file in NVRAM
 *the name of the IOS image on the TFTP server
 encapsulation of the router interface that is connected to the TFTP server
During the boot process and using the default sequence, what is the first location where the
router will look for the IOS?
 ROM
 *flash
 NVRAM
 TFTP server
A network administrator needs to transfer an IOS image to a router using a TFTP server. What
should be verified prior to beginning the transfer process?
 The TFTP server must connect to the router via a serial connection.
 *Connectivity between the TFTP server and the router should have been established.
 The TFTP server and the router must be on different networks for the transfer.
 The TFTP server software must be the same version as the Cisco IOS software.
A network technician needs to install a four-port switch module in an operational Cisco 1841
router that has an available HWIC slot. What should the technician do first?
 *Turn off the power to the router before installing the new module.
 Install the hot-swappable four-port switch module directly into slot 1 of the 1841.
 Move the existing WIC-2T module to slot 1 and install the four-port module in slot 0.
 Shut down all Fast Ethernet ports on the router until the switch module installation is
complete.
Why is it difficult for network designers to predict the patterns and behavior of file transfer
traffic?
 *The traffic is user initiated.
 File size is typically very small.
 Dedicated bandwidth is essential.
 All file transfer traffic is queued as high priority.
What functionality does NBAR provide to network technicians?
 provides data which can be used to create a network diagram
 allows for monitoring and managing network devices
 *allows for classification and monitoring of network traffic
 displays the IOS versions and IP addresses on neighboring devices
What type of system connects to the PSTN and uses a PBX to route calls via analog or digital
lines?
 VPN
 VoIP
 IP telephony
 *traditional telephony
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Which statement is true about the pairing of services and transport layer protocols for FTP and
VoIP?
 FTP applications and VoIP use TCP at the transport layer.
 FTP applications and VoIP use UDP at the transport layer.
 *FTP applications use TCP at the transport layer while VoIP uses UDP at the transport
layer.
 FTP applications use UDP at the transport layer while VoIP uses TCP at the transport
layer.
Which technology will prioritize traffic based upon the technical requirements of IP
telephony?
 PoE
 *QoS
 RPC
 RTP
 VPN
A network engineer is prototyping a new IP addressing and summarization strategy for a new
network that will be integrated into the existing infrastructure. Which method is appropriate
for testing the addressing scheme?
 using the production network of the customer
 using actual network equipment in a lab
 using the Cisco Network Assistant
 *using a network simulation tool
In a converged network, which two types of traffic would be categorized as real-time traffic?
(Choose two.)
 e-mail
 file transfer
 web browsing
 *videoconferencing
 *voice over IP
 video on demand
22
Refer to the exhibit. A customer has a problem with connectivity in the network. Based on the
IP addressing scheme, what is causing the problem?
 The WAN links need IP addresses from a different major network.
 *The WAN link that connects R1 to R2 overlaps with the R3 LAN.
 The WAN links that connect R1 to R3 and R1 to R2 have incorrect masks.
 The R1 LAN is incorrect because subnet zero cannot be used with VLSM.
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A network administrator is given a network address of 192.168.1.64/26 to create four subnets
with seven hosts in each subnet. Which subnet mask should be used?
 255.255.255.224
 *255.255.255.240
 255.255.255.248
 255.255.255.252
24
Refer to the exhibit. The routers are configured with RIPv2 with default configurations. When
attempting to communicate with other networks, hosts from 10.0.11.0/24 are experiencing
connectivity issues. What could be done to resolve this issue?
 Change to a public IP addressing scheme.
 Use EIGRP with its default configuration as the routing protocol.
 Change the subnet mask on the link between R2 and R3 to 255.255.255.0.
 *Disable automatic route summarization on all routers in the network.
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CCNA4
Refer to the exhibit. Which summarized route would be advertised by R1 to R2?
 *10.0.0.0/13
 10.4.0.0/14
 10.5.0.0/13
 10.6.0.0/14
What value is an alternative representation of the IPv6 address
2001:DB80:0000:0000:0C41:3EFF:FE00:0000?
 2001:DB8::C41:3EFF:FE:
 2001:DB80::C41:3EFF:FE00::
 *2001:DB80::C41:3EFF:FE00:0
 2001:DB80:0:0:0:C41:3EFF:FE::
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CCNA4
Refer to the exhibit. A network associate is configuring a new router to provide routing
between VLANs. The associate removes the router from the box and connects the Fa0/0
interface to a trunking port on the switch. After the configuration is applied to the router, the
traffic between VLANs still fails. What is causing this to occur?
 The NWRnStick router needs a routing protocol configured.
 The NWRnStick router needs additional Fast Ethernet interfaces installed.
 *The subinterfaces of the NWRnStick router should have IP addresses applied.
 All the subinterfaces of the NWRnStick router should be configured in the same VLAN.
A network administrator is integrating IPv6 into an IPv4 network by encapsulating an IPV6
packet within an IPv4 protocol. Which transition method is being used?
 *tunneling
 dual stack
 proxying and translation
 NAT with Protocol Translator
A network designer must select a routing protocol for the network of a customer. The
currently installed network contains both Cisco and non-Cisco routers, and there is no budget
to replace them. The designer plans on implementing both VLSM and route summarization in
the new network design. Which two protocols can provide the necessary functionality for this
LAN? (Choose two.)
 RTP
 RSTP
 RIPv1
 *RIPv2
 EIGRP
 *OSPF
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Refer to the exhibit. What result can be expected for STP in VLAN1?
 DSW1 is the root bridge. DSW3 would become root upon failure of DSW1.
 *DSW2 is the root bridge. DSW3 would become root upon failure of DSW2.
 DSW3 is the root bridge. DSW1 would become root upon failure of DSW3.
 DSW3 is the root bridge. DSW2 would become root upon failure of DSW3.
31
Refer to the exhibit. The users on the 192.168.10.128/26 network are not allowed Internet
access. Where is the most efficient location to place an extended ACL?
 inbound on S0/0/0 of R1
 outbound on S0/0/1 of R1
 *inbound on Fa0/0 of R2
 outbound on Fa0/0 of R2
 inbound on S0/0/1 of R2
32
Refer to the exhibit. What does the TOR router do with traffic that is destined for a web server
with an IP address of 172.18.10.24?
 *The router sends the traffic out Serial 0/0/0.
 The router sends the traffic out all interfaces other than the one it came in on.
 The router places the packets into a queue until a better route is discovered via RIP.
 The router sends a request to neighboring routers for paths to the 172.18.10.0
network.
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A user in a large office calls technical support to complain that a PC has suddenly lost
connectivity to the network. The technician asks the caller to talk to nearby users to see if
other machines are affected. The caller reports that several immediate neighbors in the same
department have a similar problem and that they cannot ping each other. Those who are
seated in other departments have connectivity. What should the technician check as the first
step in troubleshooting the issue?
 the power outlet to the PC that is used by the caller.
 the trunks between switches in the wiring closet.
 *the status of the departmental workgroup switch in the wiring closet.
 the cable that connects the PC of the caller to the network jack.
 the cable connection between a PC and a network outlet that is used by a neighbor.
34
Refer to the exhibit. A technician at the ISP site asks the network administrator at the client
site to change the CHAP password as part of the routing security maintenance. After the
administrator makes the change and reboots the router, the technician issues a show
interfaces serial 0/0/0 command. According to the output, what can be concluded about the
serial connection between the client site and ISP site?
 The router at the client site is still in the process of rebooting.
 *The administrator probably configured the wrong password.
 The administrator has not issued a no shut command on the serial interface.
 The administrator probably configured the wrong IP address for the serial interface.
35
Refer to the exhibit. A network engineer issues the show ip route command to validate that
the newly designed network is working as anticipated. Which users will the Admin_LAN be
able to communicate with?
 Users on the Admin_LAN will not be able to communicate with users on either LAN.
 *Users on the Admin_LAN will be able to communicate with the users on the
Faculty_LAN.
 Users on the Admin_LAN will be able to communicate with the users on the
Student_LAN.
 Users on the Admin_LAN will be able to communicate with the users on the
Faculty_LAN and the Student_LAN.
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36
Refer to the exhibit. A NetworkingCompany designer is reviewing a diagram of a customer
network. What two risks or issues can be identified in the topology that is shown?
 *The firewall router and ISP connection represent a single point of failure.
 *A failure of the switch that connects the Cisco Call Manager to the network will
cause the entire IP telephony system to fail.
 Using Layer 3 switches to interconnect the data center servers to the IP phones
introduces too much delay.
 The IP phones need to be redundantly connected to the switches to prevent single
points of failure at the access layer.
 If one of the Layer 3 switches fails, the Cisco Call Manager will be unreachable.
37
Refer to the exhibit. A company with four servers in its server farm has not enabled PVRST on
the switches that connect to the server farm segment. What will happen within the network if
a primary link goes down?
 Access to the the servers will be lost.
 *Convergence time will be slow and possibly cause applications to time out.
 Routing protocols will not send the triggered updates in the event of a failure of the
root bridge.
 Switches that connect the servers to the network will not be found by other switches in
the network.
38
Refer to the exhibit. The named ACL "Managers" already exists on the router. What will
happen when the network administrator issues the commands that are shown in the exhibit?
 The commands overwrite the existing Managers ACL.
 *The commands are added at the end of the existing Managers ACL.
 The commands are added at the beginning of the existing Managers ACL.
 The network administrator receives an error that states that the ACL already exists.
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A company has branch offices at several locations across the country. Which security
implementation would provide a cost-effective, secure, and authenticated connection to
centralized internal resources that are located at company headquarters, without requiring
configuration for individual employees at the branch offices?
 leased line with PPP authentication
 *site-to-site VPN
 access control list
 remote-access VP
A company is concerned with protecting internal e-commerce servers against external attacks.
An application layer firewall is installed at the network edge and a host-based IDS system is
installed on the internal LAN. What should be done to ensure a fast response and minimum
server downtime in the event of an external attack?
 */Replace the host-based IDS with an IPS.
 Place the e-commerce servers in a DMZ.
 Install a logging server to monitor all attacks.
 Replace the application layer firewall with a stateful one.
41
Refer to the exhibit. What will be the result of entering the commands as shown in the
exhibit?
 RIPng will not be enabled on interface fa0/0 because the network address is a
broadcast address.
 RIPng will not be enabled on this interface because the IPv6 address is only /64 bits
long.
 *RIPng will be enabled on interface fa0/0 and will advertise the configured network.
 The IPv6 interface configuration requires a network statement for the network.
 The IPv6 routing instance must be called RTA not RT0.
42
Refer to the exhibit. A pre-sales system engineer receives a diagram of the current WAN from
a customer. EIGRP is the routing protocol used on the WAN. Based on the default operation of
EIGRP, which statement is true about the routing table on router R1?
 There is a single route to the 192.168.16.0/24 LAN using the T1 connection.
 There is a single route to the 192.168.16.0/24 LAN using the DSL connection.
 *There is a single route to the 192.168.16.0/24 LAN using the Metro Ethernet
connection.
 EIGRP installs all three routes to the 192.168.16.0/24 LAN and load balances the traffic.
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To reduce unwanted incoming traffic from the outside, a network technician is tasked with
establishing the filtering rules for the network firewall. Which traffic should be allowed?
 incoming ICMP traffic
 all incoming connections to internal servers
 *incoming responses to traffic that is generated from the inside
 incoming connections from the outside that duplicate inside addresses
44
Refer to the exhibit. Based on the EIGRP configuration that is shown, what can the field
engineer conclude about the EIGRP authentication between RouterA and RouterB?
 Authentication will fail because only one key is configured.
 Authentication will fail because the key chain names do not match.
 *Authentication will succeed and EIGRP updates can be exchanged.
 Authentication will fail because the key chain names must match the router names.
45
Refer to the exhibit. A networking company engineer is characterizing an existing network for
a new customer. The engineer issues a show running-config command on the branch router to
gather configuration information. What is the engineer able to determine as a result of
viewing the output of this command?
 *Branch office traffic will be routed through the Frame Relay connection to reach the
main office LANs.
 The default route for the branch office traffic uses a path through the Frame Relay
network.
 Under normal circumstances, the connection through ISP-A will be used to reach the
main office LANs.
 By using both the DSL and the Frame Relay connection, the branch office router will
load balance traffic that is destined for the main office LANs.
CCNA4
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A network administrator has configured Frame Relay on a serial interface and issued the show
interfaces serial command. The output shows that the interface is up and the line protocol is up.
However, pings to the remote router across the link fail. What should the next step be to ensure that
the IP address of the remote router appears in the Frame Relay map table of the local router?




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Which two statements accurately describe the result of entering the command BRT(config-if)# framerelay map ip 10.1.10.1 35 on a router? (Choose two.)





48
The remote router updates the Frame Relay map table with DLCI 35 to reach the
10.1.10.0 network.
Inverse ARP is used to add an entry for 10.1.10.1 into the Frame Relay map table via
the use of DLCI 35.
DLCI 35 replaces the MAC address in the ARP table for entry 10.1.10.1.
*A Layer 2 address is statically mapped to a Layer 3 address.
*Router BRT uses DLCI 35 to forward data to 10.1.10.1.
The main office of a NetworkingCompany customer currently connects to three branch offices via three
separate point-to-point T1 circuits. The customer network uses RIPv2 as the routing protocol within
both the LAN and the WAN. The account manager proposes a change to a Frame Relay network
because the costs are lower. A single local loop connection can be installed at the main office with
three separate PVCs to connect the branch offices. How can the main office edge router be configured
to enable the customer to continue to use RIP as the WAN routing protocol?




49
Configure the router using the no inverse-arp command.
Ensure that the LMI type is correct for the circuit.
*Configure the router using the frame-relay map ip command.
Verify that the remote router has Frame Relay encapsulation enabled.
Enable Inverse ARP on the serial interface in order to learn the routes to the IP
addresses of the remote routers.
To prevent the Frame Relay network from causing a routing loop, disable split horizon
on the serial interface.
*Create three separate point-to-point subinterfaces on the serial interface and assign
a different subnet IP address to each one.
Configure the serial interface with a single interface DLCI number and create framerelay map statements for each remote site address.
A company plans to establish Frame Relay connections between corporate headquarters and several
branch offices. The network designer recommends using one physical interface on the edge router to
support the new Frame Relay connections. The company currently uses RIPv2 for routing and plans no
changes to the RIPv2 configuration. What should be done to ensure that each branch office link is a
separate subnet and that routing updates are successful between corporate headquarters and the
branch offices?




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CCNA4
Configure multipoint subinterfaces on the physical interface.
*Configure point-to-point subinterfaces on the physical interface.
Configure a single subinterface to establish multiple PVC connections.
Configure the physical interface to share one DLCI to multiple remote sites and
their connections.
What is used locally by a router to identify each Frame Relay PVC?
 LMI
 *DLCI
 IP address
 MAC address
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