Chapter 6
Cisco 1 – Introduction to Networks
Student Version
Chapter 6 Sections:
6.1 Network Layer Protocols
6.2 Routing
6.3 Routers
6.4 Configure a Cisco Router
Required Materials:
Reading Organizer
Packet Tracer Activities:
6.3.1.8 - Exploring Internetworking Devices
6.4.1.3 - Configure Initial Router Settings
6.4.3.3 - Connect a Router to a LAN
6.4.3.4 - Troubleshooting Default Gateway Issues
6.5.1.3 - Skills Integration Challenge
Labs: 6.0.1.2 - Class Activity - The road less traveled...
6.3.2.7 - Exploring Router Physical Characteristics
6.5.1.1 - Class Activity - Can You Read This Map
6.5.1.2 - Building a Switch and Router Network
Chapter Test
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
Points__________ / ___178___
Chapter 6
Reading Review
Student Version
Note: the Reading Organizer has weighted scoring. Any question with the word explain or define in it is
expected to have a longer answer and is worth two points each.
After completion of this chapter, you should be able to:
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Describe the purpose of the network layer in data communication.
Explain why the IPv4 protocol requires other layers to provide reliability.
Explain the role of the major header fields in the IPv4 and IPv6 packet.
Explain how a host device uses routing tables to direct packets to itself, a local destination, or a
default gateway.
Compare a host routing table to a routing table in a router.
Describe the common components and interfaces of a router.
Describe the boot-up process of a Cisco IOS router.
Configure initial settings on a Cisco IOS router.
Configure two active interfaces on a Cisco IOS router.
Configure devices to use the default gateway.
6.1 Network Layer Protocols
1. The network layer, or OSI Layer 3, provides services to allow end devices to exchange data across the
network. To accomplish this end-to-end transport, the network layer uses four basic processes. List
and describe each.
a. _________________________________ –
b. _________________________________ –
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
c. _________________________________ –
d. _________________________________ –
2. There are only two network layer protocols that are commonly implemented. These are:
a.
b.
3. What is the advantage of using a process, which encapsulates data layer by layer?
4. Explain the following terms:
a. Connectionless –
b. Best Effort –
c. Media Independent –
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
5. List the significant fields in the IPv4 header.
a.
b.
c.
d.
e.
f.
6. What are the two most commonly referenced fields in the IP header?
a.
b.
7. IPv4 has been updated to address new challenges. However, even with changes, IPv4 still has three
major issues. These are:
a.
b.
c.
8. List and explain the improvements that IPv6 provides include.
a. _________________________________ –
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
b. _________________________________ –
c. _________________________________ –
9. One of the major design improvements of IPv6 over IPv4 is the _____________________________ .
10. Describe five advantages of IPv6?
a.
b.
c.
d.
e.
11. The fields in the IPv6 packet header include:
a.
b.
c.
d.
e.
f.
g.
h.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
12. Extension headers are optional and are placed between the IPv6 header and the payload. EHs are
used for _____________________, ______________________, to _________________________ and
more.
6.2 Routing
13. Another role of the network layer is to direct packets between hosts. A host can send a packet to:
a.
b.
c.
14. Whether a packet is destined for a local host or a remote host is determined by the
_________________________________________________of the source (or sending) device
compared to the IPv4 address and subnet mask of the destination device.
15. Devices that are beyond the local network segment are known as __________________________.
16. The router connected to the local network segment is referred to as the _____________________.
17. What are the functions of a default gateway?
a.
b.
c.
18. A host's routing table will typically include a _______________________________.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
19. Entering the netstat -r command or the equivalent route print command, displays three sections
related to the current TCP/IP network connections. These are:
a.
b.
c.
20. The routing table of a router can store information about:
a.
b.
c.
21. What command can be used to display a Cisco router’s IPv4 routing table?
22. In addition to providing routing information for directly-connected networks and remote networks,
the routing table also has information which includes?
a.
b.
c.
d.
23. When a router interface is configured with an IPv4 address, a subnet mask, and is activated, the
following two routing table entries are automatically created. Explain both.
a. __C__ -
b. __L__ 7
CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
24. The route source identifies how the network was learned by the router. Identify the common
route sources shown below.
a. __S__ -
b. __D__ -
c. __O__ -
25. Identify the different part of the route table entry.
a.
b.
c.
d.
e.
f.
g.
26. Packets cannot be forwarded by the router without a route for the destination network in the
routing table. If a route representing the destination network is not in the routing table, the packet will
be ________________________.
27. What is the purpose of a Gateway of Last Resort?
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
28. Identify the elements of a router routing table entry.
6.3 Routers
29. There are many types of infrastructure routers available. List three.
a.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
b.
c.
30 The CCNA certification focuses on which family of infrastructure routers?
31. Regardless of their function, size or complexity, all router models are essentially _______________.
32. The ________________________________________________) is the system software used for
most Cisco devices regardless of the size and type of the device.
33. A Cisco router uses four types of memory. List and describe each.
a. _________________________________ –
b. _________________________________ –
c. _________________________________ –
d. _________________________________ –
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
34. All router platforms have default settings and components. The Cisco 1941 comes with __________
of SDRAM but is upgradable up to __________. The Cisco 1941 routers also come with __________ of
flash but are upgradable using two external Compact Flash slots. Each slot can support high-speed
storage cards upgradable to __________.
35. Identify the router components shown in the picture.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
a.
b.
c.
d.
e.
f.
g.
h.
36. Identify the ports on the router shown.
a.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
b.
c.
d.
e.
f.
37. Explain what the management ports are and what they are used for.
38. Explain what the In-band Router interfaces are and what they are used for.
39. Label the port descriptions shown.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
40. Changes made to the running-config file should be saved to the _______________________ file in
____________________, in case the router is restarted or loses power.
41. There are three major phases to the bootup process. These are:
a.
b.
c.
42. At what point will you see output on the screen during the POST process?
43. What do you type to get out of setup mode?
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
44. What information does the show version command display?
a.
b.
c.
d.
6.4 Configure a Cisco Router
45. What command is used to secure all passwords in a configuration file?
46. What are the shortest abbreviations you can use for the configuration commands shown?
47. Explain what the following configuration commands are doing.
a.
_________________________________
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
b.
_________________________________
c.
_________________________________
d.
_________________________________
48. For routers to be reachable, the _____________________ router interfaces must be configured.
49. Why is it helpful on production networks to supply a description?
50. Explain what two things are required for an interface to be active and able to carry traffic?
a.
b.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
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51. There are several commands that can be used to verify interface configuration. List and explain
four of these.
a. _________________________________ –
b. _________________________________ –
c. _________________________________ –
d. _________________________________ –
52. A default gateway is only used when?
53. Which port on R1 is the correct default gateway for each computer listed below?
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
Frederick County Career & Tech Center, MD, USA
a. PC1 - ________________________
b. PC2 - ________________________
c. PC3 - ________________________
d. PC4 - ________________________
54. What is required if you wish to connect to the switch and administratively manage it over multiple
networks?
a.
b.
c.
55. The default gateway address is typically configured on all devices that wish to communicate
beyond just their _______________ network.
56. To configure a default gateway on a switch, use the ________________________________ global
configuration command.
57. Packets originating from host computers connected to the switch must already have the
________________________________ address configured on their host computer operating systems.
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CCNA R&S 6.0 - Semester 1 – Introduction to Networks
Robb Jones & Kimberly Mentzeli
Chapter 6
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