2a. Describe using IOS commands how you would configure a basic set up of a Cisco router. You should include the following: Hostname, Banner MOTD, Telnet login, Secure Password, LAN interface and WAN interface. You can assume the WAN interface requires a clock. Ans:

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2a. Describe using IOS commands how you would configure a basic set up of a Cisco
router. You should include the following: Hostname, Banner MOTD, Telnet login, Secure
Password, LAN interface and WAN interface. You can assume the WAN interface
requires a c
lock.



Ans:


2b. Discuss the function of a Routing table. You should include full details of how routing
tables are populated with data. How convergence is reached, what kind of information is
included in the table. Explain the use of terms such as Ultim
ate route, Level 1, Parent
Child etc. how the process of packet forwarding is achieved. Include what kind of
behaviour is possible in Cisco routers.

Ans:



. Discuss the use of Static and Dynamic routes in a Cisco router. Include details of the
different

ways Static routes can be applied. Include in your discussion terms such as
Administrative Distance and how this affects the operation of routing functionality.



Ans:



3

3a. Explain the procedure for password recovery associated with Cisco routers. As
sume
that the Router is a Cisco 2600, and that typical configuration register settings are used.
You must include the precise router commands and expected outcomes for each stage.


Ans:


3b. Explain what Cisco Discovery Protocol is and what kind of infor
mation can be
obtained from its use. Give examples of how to invoke CDP globally across the whole
router and on a per interface basis.

Ans:




. Describe how Distance Vector routing protocols operate. Include a comparison with
Link state protocols using
examples.

Ans:



4

4a. Using a typical Cisco router e.g. 2600, describe and explain the various hardware,
software components of a router. You should include a description of the different types
of ports, memory and what their purpose is.

Ans:



4b. Using the diagram below, explain in detail how a router operates from an incoming
received packet to the sending on to the next hop. Base your description on a packet
coming into R2 from R1 and then sending on to R3. You must include details of all
int
ernal functions of a router. You can assume default subnet masks are used.

LAN A LAN B R1 R2 R3 R4 Fa1 Fa0 IP Address 193.168.1.0 IP Address 193.168.2.0

Ans:



5

5a. Give details of how various mechanisms in Distance Vector routing algorithms can
effec
tively reduce errors and ensure routing tables are populated with the correct
information.

Ans:





5b. Explain the terms; supernetting and auto summarisation, using as an example the
address and subnet mask of 175.16.0.0/14. What does this mean in terms

of the
address space.

Ans:




5c. Describe how Distance Vector routing protocols operate. Include a comparison with
Link state protocols using examples.

Ans:



6

6a. Give details of how an interactive session can be established with the console port of
a router and a serial port of a pc. Include in your description the set
-
up parameters of the
RS232 serial link. What other access methods could be used?



Ans:






1a. Describe using IOS commands how you would configure a basic set up of a Cisco
router. You should include the following: Hostname, Banner MOTD, Telnet login, Secure
Password, LAN interface and WAN interface. You can assume the WAN interface
requires
a clock.

Ans:




2a. Explain the procedure for password recovery associated with Cisco routers. Assume
that the Router is a Cisco 2600, and that typical configuration register settings are used.
You must include the precise router commands and expected ou
tcomes for each stage.


Ans:


2b. Explain what Cisco Discovery Protocol is and what kind of information can be
obtained from its use. Give examples of how to invoke CDP globally across the whole
router and on a per interface basis.

Ans:



2c. Describe
what backup procedures you would implement in a Cisco based Router
Network to safeguard loss of configuration data. Describe any commands used to save
data.

Ans:


3a. Describe and explain the various hardware, software components of a router. You
should
include a description of the different types of memory used and what their
purpose is.

Ans;


3b. When troubleshooting two routers that are not communicating, what checks and
tests can be carried out by the administrator?

Ans:


3c. Explain in detail how a router operates from an incoming received packet to the
sending on to the next hop. You must include details of the internal functions of a router
for example static routes and routing tables.


Ans;



4a. Describe how you woul
d discover details about a routers configuration. You must
include details that divulge the following: configuration register setting, interfaces,
protocols, routing behaviour, detailed interface information, start configuration and
network routes.

Ans :




4b. Compare and contrast TCP and UDP transmissions. Include in your discussion the
parameters associated with TCP Transmissions such as Telnet and FTP. Show how
layer 4 ports allow multiple conversations to take place between a server and numerous
clie
nts and how UDP differs from TCP. Give data traffic examples of both TCP and UDP



Ans:




4c. Describe how TCP based protocol can establish a connection and close down
gracefully once data has been transferred successfully.

Ans:



5a. Give details of
how various mechanisms in Distance Vector routing algorithms can
effectively reduce errors and ensure routing tables are populated with the correct
information.

5b. Explain the terms; supernetting and auto summarisation, using as an example the
address an
d subnet mask of 172.16.0.0/13. What does this mean in terms of the
address space.

Ans:


5c. Describe how Distance Vector routing protocols operate. Include a comparison with
Link state protocols using examples.


Ans:




6a. Give details of how an interactive session can be established with the console port of
a router and a serial port of a pc. Include in your description the set
-
up parameters of the
serial link. What other access methods could be used?


Ans:


6b. On a

Cisco router the following value is seen, what does this mean? ’Configuration
register is 0x2102’ Describe what the Configuration Register is and how the register
setting impacts how a router behaves?

Ans :


6c. Discuss the use of Static and Dynamic rou
tes in a Cisco router. Include details of the
different ways Static routes can be applied. Include in your discussion terms such as
Administrative Distance and how this affects the operation of routing functionality.

Ans :






Q) Compare and contrast the
functions of the following network protocols.

i. DNS

ii. DHCP

iii. ARP


ans:



b) Name and sketch 5 physical topologies and give a description of two types of logical
protocols that operate in a LAN.


Ans:



c) Sketch the layers of the TCP/IP layer model and briefly describe the functionality of
each layer. Explain what devices operate in the lower two layers of this model.

Ans:



3.
a) Describe in detail how the CSMA/CD protocol operates in a Local Area Ne
twork.


Ans:



b) Explain what is meant by the term Collision Domain in a LAN. Use in your arguments
the advantage that a switch has over a hub.


Ans:




c) In a typical LAN where would you use the following cables?

i. Straight through cable

ii. Cross
-
over cable

iii Roll
-
over cable

iv Serial cable

ans;




d) How are broadcast domains split up, include in your explanation a network diagram?
Describe what kind of devices achieve this and include a description of how unicast
,
multicast and broadcast traffic is handled.

Ans:


4.
a) Describe what is meant by the word ‘encapsulation’, explain using a

TCP/IP protocol stack and associated PDU’s.

Ans:



b) Describe the levels of access available in Cisco Routers and how each

level is navigated.

Ans:



c) Give details of the main components (hardware and software) and functions of a
router.


Ans:


d) Discuss and explain what routes are used for in a Router based network. Include
details of route types, how they are implemen
ted and where they are stored. (6 marks)

ans:



5.
a) Give a brief overview of the history and development of Ethernet and

hence demonstrate how Ethernet has evolved in terms of throughput.


Ans:


b) Describe the construction of the following types of network media and include the
types of termination used.

1. UTP

2. Co
-
ax

3. Optical Fiber

4. STP



Ans :




c) Explain the difference between TCP and UDP, include in your answer two typical
applications that use each system.

Ans:




d) Why do WAN links require clocking and synchronisation? Include in your discussion
the reason for having two types of WAN termination DTE and DCE.


Ans :



b) Describe using a combination of tools how you woul
d troubleshoot networking issues
in a LAN. If now you assume that network administrators may have denied the use of
ICMP, what impact does this have on troubleshooting and how would you effectively test
the network.

Ans:

d) When planning networks, what a
re the key aspects a designer must

focus on? Give an explanation of the types of media chosen, device choices etc.

ans :






Q/A



Explain what the following network terms and abbreviations mean.

i. PING

ii. DHCP

iii. ARP

iv. TCP/IP

ans:



q) Name and sketch 5 physical topologies and give a description of two types of logical
protocols that operate in a LAN.



c) Sketch the layers of the OSI layer model and briefly describe the functionality of each
layer, you may combine the top three laye
rs as being application based. Explain what
devices operate in the lower two layers of this model.


Ans:


3.
a) Describe in detail how the CSMA/CD protocol operates.

Ans:




b) Explain what is meant by the term Broadcast Domain in a LAN. Use in your
argum
ents the functions of switches and routers.

Ans:

4.
a) Describe what is meant by the word ‘encapsulation’, explain using a

TCP/IP protocol stack and associated PDU’s.

Ans:


b) Describe the levels of access available in Cisco Routers and how each

leve
l is navigated.

Ans:



c) Give details of the main components (hardware and software) and functions of a
router.

Ans:



5.
a) Describe the construction of the following types of network media and

include the types of termination used.

1. UTP

2. Co
-
ax


3. Optical Fiber

4. STP

Ans:


b) Explain the difference between TCP and UDP transmissions, hence, include in your
answer two typical applications that use each system. (8 marks)

c) Why do WAN links require clocking and synchronisation? Include in you
r discussion
the reason for having two types of WAN termination DTE and DCE.

Ans:


How you would troubleshoot networking issues in a LAN, assuming a remote connection
has failed. If now you assume that network administrators may have denied the use of
IC
MP, what impact does this have on troubleshooting and how would you effectively test
the network.

Ans:


c) You are to design a network, what are the key aspects a designer must focus on?
Give an explanation of the types of media chosen, device choices et
c.

ans:



c) Draw a diagram of the Ethernet frame structure including the number of bytes and
brief details of each portion.



Ans:



b) Explain what is meant by the term Collision Domain in a LAN. Use in your arguments
the advantage that a switch has over a hub.

Ans:



Explain what is meant by each part of the name ‘100BASE
-
T’.

Ans: