Q3 Transport Layer

What is the primary function of the User Datagram Protocol (UDP)?

• Reliable, connection-oriented communication

• Flow control and congestion avoidance

• Low-latency, unreliable communication

• Error detection and correction

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

• UDP

• TCP

• SCTP

• ICMP

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

• To route packets between networks

• To establish, manage, and terminate connections between applications

• To ensure reliable delivery of data between hosts

• To encode and decode data for transmission over the network

Which of the following protocols operates at the transport layer of the OSI model?

• IP

• TCP

• ICMP

• ARP

What is a characteristic of connection-oriented communication at the transport layer?

• No acknowledgment of data delivery is required

• Data can be transmitted without establishing a session

• A logical connection is established before data transfer begins

• Each data packet is treated independently of others

What is the maximum size of a UDP packet payload?

• 64 bytes

• 512 bytes

• 1024 bytes

• 65535 bytes

Which of the following is an advantage of UDP over TCP?

• Connection-oriented communication

• Reliable data delivery

• Lower overhead

• Congestion control mechanisms

Which TCP feature is used to avoid congestion collapse in the network?

• Slow start

• Flow control

• Congestion avoidance

• Selective acknowledgment

What is the purpose of the sequence number field in the TCP header?

• To identify the source and destination ports

• To indicate the length of the TCP header

• To specify the size of the data payload

• To order and reassemble segments at the receiver

What does the acknowledgment number field in the TCP header indicate?

• The sequence number of the next byte the sender expects to receive

• The sequence number of the last byte received correctly

• The size of the sender's receive window

• The maximum segment size supported by the sender