ICT259 Computer Networking Tutor-Marked Assignment 2026

ICT259 Tutor-Marked Assignment

This assignment is worth 18 % of the final mark for ICT259 Computer Networking.

Question 1

Discuss how network protocols and standards facilitate the transfer of data in a network by answering the following questions.

Figure Q1 shows a switched network with two switches with the MAC address of the PCs given below the PC. Initially, the MAC address tables of both switches are empty.

Figure Q1

Explain, in sequence, how Switch A and Switch B respond to each of the incoming frames based on the given four sequence of events. For each transmission, include any entry made to the MAC address table of Switch A and Switch B. Complete and include Table Q1 as part of your answer.

Table Q1

Assume all entries in the MAC address tables will not expire during the duration of the sequence of events. Also, assume that there is sufficient memory space in the MAC address tables for additional entries.

a. PC 2 sends a frame to PC 4

(7 marks)

b. PC 4 replies to PC 2

(6 marks)

c. PC 3 sends a frame to PC 2

(6 marks)

d. PC 1 sends a multicast frame

(6 marks)

(Total 25 marks)

Question 2

For the network in Figure Q2, explain the functions and protocols of the Physical and Data Link layers by answering the following questions.

Figure Q2

a. Give the type of UTP cable impementation to be used for each of the links labelled A, B, C and D in Figure Q2.

(4 marks)

b. If PC X sends a frame to PC Y, identify the source Internet Protocol (IP), destination IP, source Media Access Control (MAC), and destination MAC addresses in the frame captured at the Hub.

(4 marks)

c. Copy Figure Q2 to your answer script. Use the shape of a rectangle to represent the PC, switch and hub, and an oval for the router. Label all the devices with names either inside or beside the shaped objects. On the diagram you have copied, circle all the collision domain(s).

(4 marks)

d. Copy Figure Q2 to your answer script in the same manner as Q2(c). Indicate the following on the diagram you have copied.

• All the broadcast domain(s) by enclosing each with a circle
• The location of the default gateway(s) by a pointing arrow with labels

(3 marks)

(Total 15 marks)

Question 3

The network topology given in Figure Q3 has the network address of 200.20.20.0/24.

Figure Q3

Apply an IPv4 addressing scheme using Variable Length Subnet Mask (VLSM) to the network. Your scheme should conserve as many IP addresses as possible. You are to use the next available subnet to subnet further. Illustrate your scheme by completing the following tasks.

(a) Assign appropriate subnet addresses to all the Local Area Networks (LANs) and Wide Area Networks (WANs).

Use the format given in Table Q3 to tabulate your workings for Q3(a). The table shows a sample entry.

Table Q3

(19 marks)

(b) Derive the entire range of useable host IP addresses for all the LANs. Show your working.

(6 marks)

Question 4

Figure Q4 shows the network topology of a company.

Figure Q4

Analyse the behaviour of network protocols by answering the following:

(a) Assume that all the routers in the network shown in Figure Q4 are enabled with only Open Shortest Path First (OSPF) routing protocol. The links are labelled with link cost between two adjacent routers.

(i) Copy Table Q4(a) to your answer script and use the format given in the table to obtain the Shortest Path First (SPF) table for Router A.

Table Q4(a)

(4 marks)

(ii) From the information in Q4(a)(i), draw the Shortest Path First (SPF) Tree for Router A.

(2 marks)

(b) Assume that all the routers in the network shown in Figure Q4 are enabled with only Routing Information Protocol version 2 (RIPv2) routing protocol. Write down the router configuration commands to be entered on all the routers to achieve reachability in the entire network.

(9 marks)

(c) Assume all the routers are configured with RIPv2 routing protocol, and it is desired to have backup static routes for PC1 to reach PC2 and vice versa via Routers A, B and E. Give the configuration command(s) to set up the static routes and indicate the router(s) where the commands are implemented.

(8 marks)

(d) Use Packet Tracer to set up the network topology given in Figure Q4. Use router model 1841 for all the routers, and add interface module WIC-2T to slot 0 to all the routers. For Routers A and B, add an additional interface module WIC-1T to slot 1, and for Router D, add an additional interface module WIC-2T to slot 1 Use model 2960 for the switch.

The Ethernet interfaces available on the routers are Fa0/0 and Fa0/1. Use Fa0/0 for Ethernet interface. For serial interfaces, use S0/0/0, S0/0/1, S0/1/0, S0/1/1 if up to 4 serial interfaces are required.

Name the routers (Display Name and Hostname) using the initials of the router name followed by your PI Number. E.g., If your PI number is S1234567, name RouterA as RA-S1234567, RouterB as RB-S1234567, etc. Likewise, name Switch1, PC1 and PC2 as S1- S1234567, PC1- S1234567, and PC2- S1234567, respectively.

Complete the configurations for the 2 PCs.

Save the Packet Tracer (pkz or pkt) file to the Vocareum Lab Workspace using the following file name convention:

ICT259-T0<Tut Group>–<PI Number>–<Your Name>

E.g., ICT259-T01-S1234567-John Tan

Take a screenshot of the created network topology and paste it to your MS WORD answer script. Be sure the name of the devices has your PI number.

Note: For Windows users, you can snap a screenshot by pressing the Shift, Windows, and S keys simultaneously. You will see a grey screen. Use your mouse to enclose the area you want to capture. The captured image is saved to the clipboard. Then press CtrlV to paste it to your answer script.

(4 marks)

(e) Implement the RIPv2 configuration commands you have written in Q4(b) on all the routers on the Packet Tracer topology. Save your work to the same file name created in Q4(d).

(i) Check the routing table by issuing the show ip route command as shown below.

Router> enable

Router#show ip route

Take a screenshot of the routing table for each router and paste it to your MS WORD answer script. Figure Q4(e)(i) shows a sample with details intentionally cropped.

Figure Q4(e)(i)

(5 marks)

(ii) Check your router configurations for Router D by issuing the show run command as shown below.

RD- <PI Number>#show run

If there is a more at the bottom of the page, press the space bar on your keyboard to advance to the next page.

Scroll through the listing so that the interface configurations and network statements are displayed on one page, as shown in the sample given in Figure Q4(e)(ii) for a particular Router A.

Figure Q4(e)(ii)

Take a screenshot of Router D’s show run listing with the router’s name, interface configurations, and network statements on one page, and paste it to your MS WORD answer script. Be sure the name of the router has your PI number.

(2 marks)

(f) Verify your configurations by performing a ping from PC1 to PC2. Take a screenshot of the ping, and paste it to your MS WORD answer script. Be sure the name of the PC has your PI number.

(1 mark)

Submit your Packet Tracer (pkz or pkt) file to Vocareum Lab for grading. If you save your file and do not submit it, your work will not show up and can result in not being graded. Submission instructions are given in the Student Guide for Virtual Lab Workspace. Capture a screenshot of your submission and paste it to your MS WORD answer script.

(Total 35 marks)

—-End of Assignment —-

The post ICT259 Computer Networking Tutor-Marked Assignment 2026 appeared first on Singapore Assignment Help.