Transport Layer

Which transport layer protocol provides reliable data transfer?

UDP

TCP

ICMP

Which of the following is a characteristic of the User Datagram Protocol (UDP)?

Connection-oriented

Guaranteed delivery

Low overhead

Flow control

What is the primary function of the transport layer in the OSI model?

Routing packets

Error detection and correction

Process-to-process communication

Network addressing

Which of the following mechanisms is used by TCP to ensure reliable delivery of data?

Best effort delivery

Sequence numbers

Checksum

ARP

What does the TCP three-way handshake establish?

Data encryption

Congestion control

A reliable connection

Flow control

Which field in the TCP header indicates the number of bytes a sender is willing to receive?

Sequence Number

Acknowledgment Number

Window Size

Checksum

Which transport layer protocol is typically used for real-time applications like video streaming and VoIP?

TCP

HTTP

HTTPS

UDP

What is the purpose of the port numbers in the transport layer?

To identify the sending and receiving devices

To identify the protocols used

To identify the source and destination applications

To identify the data payload size

Which of the following is not a characteristic of TCP?

Flow control

Error recovery

Connectionless communication

Congestion control

What is the default port number for the HTTPS protocol?

443

Which transport layer protocol provides reliable, connection-oriented communication?

UDP

TCP

ICMP

What is the purpose of sequence numbers in TCP headers?

To identify the source and destination ports

To detect errors in the transmission

To ensure packets are delivered in order

To manage flow control

Which field in the TCP header is used for flow control?

Sequence number

Acknowledgment number

Window size

Checksum

In UDP, what happens if a segment arrives out of order?

It is discarded

It is retransmitted

It is buffered until the missing segments arrive

It is processed immediately

Which transport layer protocol is commonly used for streaming multimedia applications?

TCP

ICMP

UDP

HTTP

What does the acknowledgment number in the TCP header indicate?

The number of bytes received

The next sequence number expected

The number of packets sent

The source port number

What role does the UDP checksum play?

Error correction for data transmission

Flow control management

Header encryption

Error detection for data integrity

Which transport layer feature does TCP use to avoid congestion on a network?

Window scaling

Slow start

UDP checksum

Source quench

Which port number range is reserved for well-known services and protocols?

1024-49151

49152-65535

65536-65535

0-1023

What is the primary function of the transport layer in the OSI model?

Packet routing

Error detection and correction

End-to-end delivery of data segments

Network addressing

Transport Layer

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