Why is it necessary to use a relay agent to enable a Dynamic Host Configuration
Protocol (DHCP) server to assign IP addresses to clients on other networks? (Choose 2.)
Because DHCP requires a separate license for each subnet.
Because DHCP must use the Transmission Control Protocol (TCP) to communicate with clients.
Because the DHCP address assignment process relies on broadcast transmission.
Because clients cannot initiate an address assignment by contacting DHCP servers on other
networks directly.
Which of the following is an example of a hybrid topology?
A workstation with two network interface cards, one of which is connected to a star network and
one to a bus network.
Four Ethernet switches connected using a bus topology.
Four workstations, each with a separate network connection to each of the other three.
Four Ethernet switches, Each with a separate network connection to each of the other three.
Which of the following connector types are associated with fiber-optic cables? (Choose
3.)
ST
MT-RJ
LC
RJ-11
F
Which of the following best?
A dotted decimal notation assigned to a NIC by software
A unique 48-bit identifying number burned into every NIC
A unique dotted decimal notation burned into every NIC
A 48-bit identifying number assigned to a NIC by software
Which of the following is the device that provides the interface between a Local Area
Network (LAN) and a Wide Area Network (WAN)?
IDS/IPS
CSU/DSU
QSFP
SIP Trunk
Which of the following Dynamic Host Configuration Protocol (DHCP) options prevents
the client from transmitting IP datagrams that circulate endlessly around the network?
ARP cache timeout
TCP keepalive interval
Interface MTU
Default IP TTL
Which layer of the OSI model involves routing?
transport layer
application layer
presentation layer
network layer
Which of the following is not a protocol operating at the network layer of the OSI
model?
IP
ICMP
IGMP
IMAP
Which of the following is a common European alternative to the 110 punchdown block
used in U.S. telecommunications installations?
Krone LSA-Plus
mGRE
BIX
66 block
Which of the following is most likely to be a MAC address assigned to a NIC?
e80::89a5:9e4d:a9d0:9ed7
23:4F:17:8A:4C:10
24-17-232-TB
192.168.1.121
Which of the words in the fully qualified domain name
(FQDN) www.paris.mydomain.org represents the topmost layer in the DNS namespace
hierarchy?
mydomain
org
www
paris
Which of the following statements explains the purpose of the twists in twisted pair
cabling?
The twists completely eliminate crosstalk and electromagnetic interference (EMI) in adjacent
pairs
The twists prevent crosstalk in adjacent wire pairs and limit the effects of EMI on the signals
carried over the cable.
The twists extend the bend radius allowance of the cable.
The twists prevent collisions.
If a sending system does not know the MAC address of the intended recipient system, it
sends a broadcast frame with what MAC address?
192.168.0.0
11-11-11-11-11-11
FF-FF-FF-FF-FF-FF
00-00-00-00-00-00
Ed is a software developer who has been given the task of creating an application that
requires guaranteed delivery of information between end systems. At which layer of the
Open Systems Interconnection (OSI) model does the protocol that provides the
guaranteed delivery run, and what type of protocol must Ed use?
Application layer; connectionless
Network layer; connection-oriented
Data Link layer; connectionless
Transport layer: connection-oriented
Which OSI layer enables Web browsers to interact with operating system code?
data link layer
application layer
transport layer
presentation layer
Which of the following OSI layers converts the ones and zeroes to electrical signals and
places these signals on the cable?
Physical layer
Transport layer
Network layer
Data Link layer
At which OSI layer is the frame created?
session layer
transport layer
application layer
Data Link layer
The term “unshielded twisted pair” describes which of the following network
components?
switch
cable
router
NIC
Which of the following are characteristics of an internal cable installation? (Choose 3.)
An internal cable installation uses solid wire conductors for all cable runs, regardless of distance
In an internal cable installation, cables are typically run through walls or ceilings
An internal cable installation uses only prefabricated cables with connectors attached for all
cable runs
An internal cable installation uses bulk spools of cabling with no connectors attached for most
cable runs
An internal cable installation uses stranded wire conductors for short cable runs and solid core
for longer cable runs
In an internal cable installation, cables are typically not run through walls or ceilings
Ed has been hired to install network cabling for a small private company with 15
employees who need to share files and printers. All of the employees are physically
located within the same building in two separate office spaces directly adjacent to each
other, sharing a common wall and door for access. Both offices have drop ceilings. The
client wants a simple Gigabit that is easy to troubleshoot. In addition, Ed’s client wants
to keep installation costs to a minimum. Which of the following combinations of
topology, cable type, and installation method would best meet the needs of Ed’s client?
Star topology, twisted pair cabling, and external installation
Star topology, fiber-optic cabling, and internal installation
Bus topology, coaxial cabling, and external installation
Star topology, coaxial cabling, and external installation
Bus topology, twisted pair cabling, and internal installation
Which layer of the OSI model makes sure the data is in a readable format for the
Application layer?
session layer
presentation layer
transport layer
application layer
How much data can a typical frame contain?
500 bytes
1500 bytes
1500 kilobytes
1 megabyte
Which of the following is the term used to describe the logical distance of a Network
Time Protocol (NTP) server from the time source to which it is synchronized?
iteration
stratum
path
layer
Why does DSL (Digital Subscriber Line) technology support faster data transmission
than a standard Public Switched Telephone Network (PSTN) modem connection?
DSL uses a higher frequency range.
DSL does not perform Cyclic Redundancy Check (CRC) functions and therefore has less
overhead.
DSL performs only a single analog-to-digital.
DSL uses a separate control circuit that provides clear channels for data.
From the options that follow, select the one that best describes the contents of a typical
network frame.
Recipient’s MAC address, sender’s MAC address, data, FCS
Sender’s MAC address, recipient’s MAC address, data, FCS
Recipient’s IP address, sender’s IP address, data, FCS
Recipient’s e-mail address, sender’s e-mail address, data, FCS