TCP and UDP Protocols: A Comprehensive Guide for Network Professionals

Question 1

What is the primary purpose of the sequence number field within a TCP header?

Accepted Answer

Ensuring the proper order of packets

Answer

Detecting and correcting errors

Answer

Preventing duplicate deliveries

Answer

Regulating data flow

Question 2

Within the OSI model, which layer is UDP primarily associated with?

Accepted Answer

Transport

Answer

Network

Answer

Data link

Answer

Application

Question 3

What is the maximum size of a UDP datagram?

Accepted Answer

65535 bytes

Answer

512 bytes

Answer

1024 bytes

Answer

1500 bytes

Question 4

In TCP, which mechanism is essential for ensuring reliable data transmission?

Accepted Answer

Sequence numbers and acknowledgments

Answer

Checksums and error correction codes

Answer

Flow control and congestion avoidance

Question 5

What is a key distinction between TCP and UDP protocols?

Accepted Answer

TCP establishes a connection before data transfer, unlike UDP.

Answer

TCP utilizes a greater bandwidth than UDP.

Answer

UDP offers flow control, while TCP does not.

Answer

UDP ensures reliable data transfer, unlike TCP.

Question 6

Which mechanism is primarily employed by TCP to manage network congestion and prevent data loss?

Accepted Answer

Sliding window mechanism

Answer

Stop-and-wait approach

Answer

UDP's congestion control mechanisms

Question 7

For applications that need fast data delivery even if some data is lost, which protocol is the better choice?

Accepted Answer

UDP

Answer

TCP

Answer

Both TCP and UDP

Answer

Neither TCP nor UDP

Question 8

What is the maximum data size that can be transmitted in a single TCP segment?

Accepted Answer

65,535 bytes

Answer

1,500 bytes

Answer

4,096 bytes

Answer

8,192 bytes

Question 9

How do checksums and port numbers help UDP deliver messages efficiently?

Accepted Answer

Checksums verify data accuracy, and port numbers direct messages to the correct application.

Answer

Checksums manage data flow, and port numbers prevent data loss.

Answer

Port numbers enable multiplexing, and checksums ensure message order.

Answer

Checksums allow error correction, and port numbers secure data transmission.

Question 10

What is a significant advantage of TCP over UDP?

Accepted Answer

Ensuring data delivery without loss or corruption

Answer

Reducing latency and network delay

Answer

Facilitating higher bandwidth capabilities

Answer

Minimizing network overhead

Question 11

Which of the following is NOT a typical application for UDP?

Accepted Answer

Large file transfers

Answer

Voice transmission over the internet (VoIP)

Answer

Interactive online gaming

Answer

Continuous video streaming

Question 12

What is the primary function of the UDP header?

Accepted Answer

Providing multiplexing and demultiplexing services for multiple applications

Answer

Establishing a network connection between sender and receiver

Answer

Guaranteeing reliable data delivery

Answer

Managing the flow of data between connected devices

Question 13

Which factors should be considered when selecting between TCP and UDP for a specific application?

Accepted Answer

All of the above factors

Answer

Required level of data reliability

Answer

Bandwidth requirements of the application

Answer

Acceptable latency (delay) tolerance

Question 14

What is the purpose of the three-way handshake in TCP?

Accepted Answer

Encompassing all of the above functions

Answer

Establishing a connection between sender and receiver

Answer

Negotiating the maximum segment size for data transmission

Answer

Synchronizing sequence numbers to ensure orderly data delivery

Question 15

Which of the following is a common use case for TCP in networking?

Accepted Answer

All of the above applications

Answer

Accessing websites on the internet

Answer

Sending and receiving emails

Answer

Transferring files between devices

Question 16

Which techniques does TCP employ to manage network congestion?

Accepted Answer

All of the above techniques

Answer

Sliding window mechanism to control data transmission rate

Answer

Slow start algorithm to gradually increase data transmission

Answer

Congestion avoidance measures to prevent network overload

Question 17

Which of the following is a key characteristic of TCP?

Accepted Answer

Establishes a reliable connection

Answer

Unreliable

Answer

Datagram-based

Answer

Connectionless

Question 18

What is the main advantage of using UDP over TCP?

Accepted Answer

Faster transmission due to less overhead

Answer

Ordered packet delivery

Answer

Error recovery mechanisms

Answer

Guaranteed delivery

Question 19

Which application protocol typically uses UDP?

Accepted Answer

DNS

Answer

HTTP

Answer

SMTP

Answer

FTP

Question 20

What is the purpose of the TCP three-way handshake?

Accepted Answer

To establish reliable communication between two hosts

Answer

To transfer data

Answer

To terminate a connection

Question 21

Which network application would benefit most from using TCP protocol?

Accepted Answer

File transfer

Answer

Web browsing

Answer

Gaming

Answer

Video streaming

Question 22

What is the role of the checksum field in UDP?

Accepted Answer

To detect errors in the datagram

Answer

To sequence the datagrams

Answer

To identify the sender of the datagram

Answer

To control the flow of data

Question 23

Which of the following is NOT a transport layer protocol?

Accepted Answer

IP

Answer

UDP

Answer

TCP

Answer

SCTP

Question 24

What is the maximum size of a UDP datagram?

Accepted Answer

65,535 bytes

Answer

It is unlimited

Answer

16,384 bytes

Answer

32,768 bytes