Module 14- Cisco Netacad Intro to Networks

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

• UDP sequence number

• UDP ACK flag

• TCP port number

• TCP 3-way handshake

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

• 0 to 1023

• 0 to 255

• 1024 to 49151

• 256 to 1023

What is a socket?

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

• The combination of a source IP address and port number on a destination IP address and port number

• The combination of the source and destination sequence and acknowledgement numbers

• 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?

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

• The server uses IP addresses to identify different services.

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

• The server sends all requests through a default gateway.

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

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

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

• The entire FTP message is re-sent.

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

What type of applications are best suited for using UDP?

• applications that need reliable delivery

• applications that are sensitive to delay

• applications that are sensitive to packet loss

• applications that require retransmission of lost segments

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

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

• 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.)

• reconstructing data in the order received

• identifying the applications

• retransmitting any unacknowledged data

• identifying individual conversations

• acknowledging received data

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.)

• SYN

• ACK

• RST

• FIN

• URG