Alcatel Lucent Scalable IP Networks Set 2

Nothing. The two hosts can send data to each other at any time. ✘ The two hosts must negotiate a path MTU to be used for the data exchange. ✘ The two hosts must perform a 3-way handshake before transmitting data. ✘ The two hosts must exchange encryption keys before transmitting data. ✔

The ACK tells the host A that host B wishes to establish a session. ✘ The ACK tells host A the sequence number of the segment that was just received by host B. ✘ The ACK tells host A the sequence number of the next segment that host B expects to see. ✘ The ACK is flow control from host B and tells host A to reduce its transmission rate. ✔

Host A has received a request to establish a TCP session. ✘ Host A has received a request to close a TCP session ✘ A TCP session is now established to host A. ✘ The TCP session has been terminated due to a timeout. ✔

These ports identify the physical location of the sender and the receiver on the IP router. ✘ These ports are used as addresses to communicate with the IP layer. ✘ TCP does not use source or destination ports. ✘ These ports are used as an address to identify the upper layer application using the TCP connection. ✔

Source port. ✘ MTU. ✘ Sequence number. ✘ Acknowledgement number. ✔ Window size. ✔

TTL ✘ ACK ✘ FIN ✘ SYN ✔

1 ✘

The missing segment is retransmitted. ✘ The TCP session is terminated. ✘ The sender sends the next segment. ✘ An ICMP destination unreachable message is sent. ✔

It restricts the sender from sending too much data when there is congestion in the network. ✘ It allows the receiver to control the rate at which the sender transmits data. ✘ It forces the sender to send only one segment at a time. ✘ It allows the receiver to drop segments without the sender having to retransmit. ✔

Checksum ✘ SYN ✘ Destination port ✘ Window size ✔ MTU ✔