COIT20261 Network Routing and Switching Term 1, 2019

This document provides answers to assignment questions on network routing and switching. It covers topics such as routing tables, autonomous systems, and inter-domain routing protocols. The document is for the course COIT20261 Network Routing and Switching Term 1, 2019 at [University name].

COIT20261 Network Routing and Switching Term 1, 2019
Assignment item —Written Assessment-2
NETWORK ROUTING and SWITCHING
[Student name]
[University name]
[Professor Name]
[Date]

COIT20261 Network Routing and Switching Term 1, 2019
Assignment item —Written Assessment-2
ASSIGNMENT TWO
Answers
First Name:_________________________ Last Name:____________________________
Student ID: __________________________
Questions Mark
allocated
Mark
earned
Question 1: (10 marks) 5 each
table
Answer: Routing table of router R2:
Mask Network address Next-hop address Interface
/24 200.11.60.0 150.3.0.2 M1
/24 220.10.40.1 150.3.0.3 M1
/22 140.21.0.1 150.3.0.2 M2
/18 150.32.0.1 150.3.0.1 M1
/18 161.22.0.1 150.3.0.3 M2
(Dick, 2018).
Routing table of router R3:
Mask Network
address
Next-hop
address
Interface
/24 200.11.60.0 150.3.0.2 M1
/24 INTERNET 150.3.0.4 M1
/22 140.21.0.1 150.3.0.2 M2
/18 150.32.0.1 150.3.0.1 M1
5 max
5 max
Question 2: (5 marks)
a) The routers determines whether the destination address is on the route
table by looking at the destination addresses in the packet after which it
matches it with the route table, in case it is not matched with the route
1 max

COIT20261 Network Routing and Switching Term 1, 2019
Assignment item —Written Assessment-2
table a packet is dropped and an ICMP message is sent to the source
indicating that there is route for the destinations networks (Michael,
2017).
b) The below table shows the calculations made by the R4 to send the
packet to ip address 150.32.0.17, in this case the router send the packet
by identifying the ip address and the possible next hop address which is
150.3.0.2 and number of hops for the packet to reach destination through
the router interface M0.
2 max
c) The below table shows the calculations made by the R4 to send the
packet to ip address 150.32.48.15, in this case the router send the packet
by identifying the ip address and the possible next hop address which is
150.3.0.2 and number of hops for the packet to reach destination through
the router interface M0.
2 max
Question 3: (10 marks)
a) An autonomous system is a collection of various connected Internet Protocols
(IP) routing prefix which are under a control of one or more networks
operator who acts as a single administrative entity or domain that present a
common, and clearly defined routing policies to the internet.
Examples of the autonomous system includes : robot vacuum cleaner or space
probe
1 max
Mask Network address Next-hop
address
hops Interface
/24 150.32.0.17 150.3.0.2 1 M0
Mask Network address Next-hop
address
Hops Interface
/24 150.32.48.15 150.3.0.2 1 M0

COIT20261 Network Routing and Switching Term 1, 2019
Assignment item —Written Assessment-2
The Border Gateway Protocol (BGP) is a type of Inter-domain routing protocol
that operates two autonomous systems.
b) Inter-domain routing protocol is routing protocol that is used to do the
routing operations that are performed between two autonomous systems and
also called exterior gate-way routing, example of the Inter-domain routing is
Border Gateway Protocol (BGP) (Specialist,2018).
2 max
c) Intra-domain routing is routing protocol that is used to do the routing
operations that are performed inside an autonomous system and also called
interior gate-way routing, example of the Intra-domain routing is Open
Shortest Path First (OSPF) (Paige, 2015).
2 max
d) Below are the examples of domain protocols
Inter-domain routing protocol e.g. Border Gateway Protocol.
Intra-domain routing protocol e.g. Open Shortest Path First.
The Border Gateway Protocol and Open Shortest Path First protocols are
similar in that they transmit signals through the autonomous systems.
3 max
e) There are different routing protocols between inter-domain and Intra-
domain routing since the inter-domain routing do the routing prefix between
two or more autonomous systems while the intra-domain routing do routing
inside a single autonomous systems (Stephen, 2014).
2 max
Total marks awarded 25 (max)
Less late penalties
Less plagiarism penalties
Total marks earned
Markers comments:

COIT20261 Network Routing and Switching Term 1, 2019
Assignment item —Written Assessment-2
Reference
Stephen,H.(2014) Management Information Systems with student CD and MISource.3rd edn.
New York:McGraw-Hill.
Paige,B.(2015) Business Driven Information Systems with MISource 2007 and Student CD.1st
edn New York: McGraw-Hill.
Specialist,I.(2018) CISSP Certified Information Systems Security Professional Study Guide
2018. 1st edn.New York:Independently published
Michael,J.(2017) Human Resource Information Systems: Basics, Applications, and Future
Directions. 5th edn.New York :SAGE Publications, Inc.
Dick,B.(2018) IT Project Management Essentials: Information Systems Project Methodology
Kindle Edition. 1st edn.New York:Amazon Digital Services LLC.