a) Putting large chunks of data on the cable at one time slows down the network because it can cause congestion. When too much data is sent at once, it can overwhelm the network's capacity, causing delays in data transmission. This is similar to a traffic jam on a highway; when too many cars are on the road at the same time, it slows down traffic for everyone.

b) As an IT consultant, the four characteristics necessary when examining cables are:

1. Bandwidth: This refers to the maximum amount of data that can be transmitted over the cable in a given time period. Higher bandwidth cables can transmit more data at once.

2. Latency: This is the delay between when data is sent and when it is received. Lower latency is better, as it means data is transmitted more quickly.

3. Noise Resistance: This refers to the cable's ability to resist interference from other electronic devices. Cables with better noise resistance will have fewer errors in data transmission.

4. Durability: This refers to the physical strength of the cable. More durable cables are less likely to be damaged and need replacement.

c) The effects of increased traffic on different LAN topologies are:

(i) Star: In a star topology, all devices are connected to a central hub. If traffic increases, the hub can become a bottleneck, slowing down the network. However, because each device has its own connection to the hub, problems with one device do not affect the others.

(ii) Bus: In a bus topology, all devices are connected to a single cable. If traffic increases, it can slow down the entire network because all data must travel along the same path. Additionally, if the cable fails, the entire network goes down.

(iii) Ring: In a ring topology, each device is connected to two others, forming a loop. If traffic increases, it can slow down the network because data must pass through each device in the loop. However, if one device fails, the network can still function by sending data the other way around the loop.

Question

a) Putting large chunks of data on the cable at one time slows down the network because it can cause congestion. When too much data is sent at once, it can overwhelm the network's capacity, causing delays in data transmission. This is similar to a traffic jam on a highway; when too many cars are on the road at the same time, it slows down traffic for everyone.

b) As an IT consultant, the four characteristics necessary when examining cables are:

1. Bandwidth: This refers to the maximum amount of data that can be transmitted over the cable in a given time period. Higher bandwidth cables can transmit more data at once.

2. Latency: This is the delay between when data is sent and when it is received. Lower latency is better, as it means data is transmitted more quickly.

3. Noise Resistance: This refers to the cable's ability to resist interference from other electronic devices. Cables with better noise resistance will have fewer errors in data transmission.

4. Durability: This refers to the physical strength of the cable. More durable cables are less likely to be damaged and need replacement.

c) The effects of increased traffic on different LAN topologies are:

(i) Star: In a star topology, all devices are connected to a central hub. If traffic increases, the hub can become a bottleneck, slowing down the network. However, because each device has its own connection to the hub, problems with one device do not affect the others.

(ii) Bus: In a bus topology, all devices are connected to a single cable. If traffic increases, it can slow down the entire network because all data must travel along the same path. Additionally, if the cable fails, the entire network goes down.

(iii) Ring: In a ring topology, each device is connected to two others, forming a loop. If traffic increases, it can slow down the network because data must pass through each device in the loop. However, if one device fails, the network can still function by sending data the other way around the loop.

Knowee AI · Accepted Answer