Cisco 1, Module 14

Which transport layer feature is used to establish a connection-oriented session?

• TCP 3-way handshake

• TCP port number

• UDP sequence number

• UDP ACK flag

What is the complete range of TCP and UDP well-known ports?

• 0 to 1023

• 256 - 1023

• 0 to 255

• 1024 - 49151

What is a socket?

• the combination of a source IP address and port number or a destination IP address and port number

• the combination of the source and destination sequence and acknowledgment numbers

• the combination of the source and destination IP address and source and destination Ethernet address

• the combination of the source and destination sequence numbers and port numbers

How does a networked server manage requests from multiple clients for different services?

• The server sends all requests through a default gateway.

• Each request has a combination of source and destination port numbers, coming from a unique IP address.

• Each request is tracked through the physical address of the client.

• The server uses IP addresses to identify different services.

What happens if part of an FTP message is not delivered to the destination?

• The part of the FTP message that was lost is re-sent.

• The FTP source host sends a query to the destination host.

• The entire FTP message is re-sent.

• The message is lost because FTP does not use a reliable delivery method.

What type of applications are best suited for using UDP?

• applications that are sensitive to packet loss

• applications that need reliable delivery

• applications that require retransmission of lost segments

• applications that are sensitive to delay

Network congestion has resulted in the source learning of the loss of TCP segments that were sent to the destination. What is one way that the TCP protocol addresses this?

• The destination decreases the window size.

• The destination sends fewer acknowledgement messages in order to conserve bandwidth.

• The source decreases the amount of data that it transmits before it receives an acknowledgement from the destination.

• The source decreases the window size to decrease the rate of transmission from the destination.

Which two operations are provided by TCP but not by UDP? (Choose two.)

• identifying individual conversations

• acknowledging received data

• retransmitting any unacknowledged data

• identifying the applications

• reconstructing data in the order received

What is the purpose of using a source port number in a TCP communication?

• to assemble the segments that arrived out of order

• to keep track of multiple conversations between devices

• to inquire for a nonreceived segment

• to notify the remote device that the conversation is over

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

• ACK

• URG

• SYN

• RST

• FIN