3. Data Transmission

Question 1

What is the significance of a Time-To-Live (TTL) field in data packets?

Answer 1

TTL prevents packets from looping indefinitely by limiting the number of hops a packet can take.

Question 2

Why is flow control important in data transmission?

Answer 2

Flow control prevents the sender from overwhelming the receiver by regulating data transmission rates.

Question 3

What is congestion control, and how does it work?

Answer 3

Congestion control manages traffic flow to prevent overloading network resources, often by dynamically adjusting the sender’s transmission rate.

Question 4

What is the difference between synchronous and asynchronous transmission?

Answer 4

Synchronous: Data is sent in continuous streams with synchronized clocks.

Asynchronous: Data is sent in individual packets with start and stop bits for synchronization.

Question 5

What is the Maximum Transmission Unit (MTU), and why is it important?

Answer 5

MTU is the largest packet size that can be transmitted over a network without fragmentation, ensuring efficient data transfer.

Question 6

How does ARP facilitate data transmission within a network?

Answer 6

ARP resolves IP addresses into MAC addresses, enabling devices to communicate over a local network.