Introduction to Networks Module 14 Quiz

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

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 or a destination IP address and port number the combination of the source and destination sequence numbers and port numbers the combination of the source and destination sequence and acknowledgment numbers

to keep track of multiple conversations between devices

What is the purpose of using a source port number in a TCP communication? to inquire for a nonreceived segment to notify the remote device that the conversation is over to keep track of multiple conversations between devices to assemble the segments that arrived out of order

applications that are sensitive to delay

What type of applications are best suited for using UDP? applications that need reliable delivery applications that are sensitive to delay applications that require retransmission of lost segments applications that are sensitive to packet loss

192.168.1.1:80

Which number or set of numbers represents a socket? 01-23-45-67-89-AB 21 192.168.1.1:80 10.1.1.15

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

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 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.

tracking individual conversations

What is a responsibility of transport layer protocols? determining the best path to forward a packet tracking individual conversations translating private IP addresses to public IP addresses providing network access

TCP 3-way handshake

Which transport layer feature is used to establish a connection-oriented session? TCP 3-way handshake UDP ACK flag UDP sequence number TCP port number

The client randomly selects a source port number.

Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer? The client randomly selects a source port number. The client sends an ISN to the server to start the 3-way handshake. The client sends a synchronization segment to begin the session. The client sets the window size for the session.

ACK SYN

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 FIN PSH ACK RST URG

acknowledging received data retransmitting any unacknowledged data

Which two operations are provided by TCP but not by UDP? (Choose two.) acknowledging received data reconstructing data in the order received identifying individual conversations identifying the applications retransmitting any unacknowledged data

DNS VoIP

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two) POP3 DNS VoIP HTTP FTP

sliding window

What TCP mechanism is used to enhance performance by allowing a device to continuously send a steady stream of segments as long as the device is also receiving necessary acknowledgements? two-way handshake socket pair sliding window three-way handshake

0 to 1023

What is the complete range of TCP and UDP well-known ports? 0 to 1023 1024 - 49151 0 to 255 256 - 1023

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

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. 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.

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

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 source decreases the amount of data that it transmits before it receives an acknowledgement from the destination. The destination decreases the window size. The source decreases the window size to decrease the rate of transmission from the destination. The destination sends fewer acknowledgement messages in order to conserve bandwidth.