DCN -4th UNIT

Which transport layer protocol uses the three-way handshake mechanism?

• UDP

• TCP

• ICMP

• FTP

What is the primary purpose of connection establishment in transport protocols?

• Terminating a connection

• Synchronizing communication between sender and receiver

• Multiplexing data

• Error detection

What is the first step in a three-way handshake?

• ACK

• SYN

• FIN

• SYN-ACK

Which of the following primitives is used to terminate a connection?

• CONNECT

• DISCONNECT

• SEND

• RECEIVE

What is the sequence used in TCP connection termination?

• Two-way handshake

• Three-way handshake

• Four-way handshake

• Five-way handshake

A transport address is a combination of:

• IP address and subnet mask

• MAC address and IP address

• IP address and port number

• Port number and protocol type

Which port number is used by HTTP services?

• 22

• 53

• 80

• 443

Port numbers between 0 and 1023 are known as:

• Dynamic ports

• Private ports

• Well-known ports

• Ephemeral ports

What is the port number for DNS services?

• 53

• 80

• 25

• 110

Which layer of the OSI model is responsible for addressing at the transport level?

• Application layer

• Network layer

• Transport layer

• Data link layer