Network Application Communications Exam Questions and Answers Already Passed
1. Which action is performed by a client when establishing communication with a server via the use of
UDP at the transport layer?
The client sets the window size for the session.
The client sends an ISN to the server to start the 3-way handshake.
The client randomly selects a source port number.
The client sends a synchronization segment to begin the session. - Answers the client randomly selects a
source port number
2. Which transport layer feature is used to guarantee session establishment?
UDP ACK flag
TCP 3-way handshake
UDP sequence number
TCP port number - Answers TCP 3-way handshake
3. What is the complete range of TCP and UDP well-known ports?
0 to 255
0 to 1023
256 - 1023
1024 - 49151 - Answers 0 to 1023
4. 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 and acknowledgment numbers
the combination of the source and destination sequence numbers and port numbers - Answers the
combination of a source IP address and port number or a destination IP address and port number
5. A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending
the file using 100-byte segments. How many segments will the server send before it requires an
acknowledgment from the PC?
,1 segment
10 segments
100 segments
1000 segments - Answers 10 segments
6. Which factor determines TCP window size?
the amount of data to be transmitted
the number of services included in the TCP segment
the amount of data the destination can process at one time
the amount of data the source is capable of sending at one time - Answers the amount of data the
destination can process at one time
7. What does a client do when it has UDP datagrams to send?
It just sends the datagrams.
It queries the server to see if it is ready to receive data.
It sends a simplified three-way handshake to the server.
It sends to the server a segment with the SYN flag set to synchronize the conversation. - Answers It just
sends the datagrams
8. Which three fields are used in a UDP segment header? (Choose three.)
Window Size
Length
Source Port
Acknowledgment Number
Checksum
Sequence Number - Answers Length
Source Port
Checksum
9. What are two roles of the transport layer in data communication on a network? (Choose two.)
, identifying the proper application for each communication stream
tracking the individual communication between applications on the source and destination hosts
providing frame delimiting to identify bits making up a frame
performing a cyclic redundancy check on the frame for errors
providing the interface between applications and the underlying network over which messages are
transmitted - Answers identifying the proper application for each communication stream
tracking the individual communication between applications on the source and destination hosts
10. What information is used by TCP to reassemble and reorder received segments?
port numbers
sequence numbers
acknowledgment numbers
fragment numbers - Answers sequence numbers
11. What important information is added to the TCP/IP transport layer header to ensure communication
and connectivity with a remote network device?
timing and synchronization
destination and source port numbers
destination and source physical addresses
destination and source logical network addresses - Answers destination and source port numbers
12. Which two characteristics are associated with UDP sessions? (Choose two.)
Destination devices receive traffic with minimal delay.
Transmitted data segments are tracked.
Destination devices reassemble messages and pass them to an application.
Received data is unacknowledged.
Unacknowledged data packets are retransmitted. - Answers Destination devices receive traffic with
minimal delay
Received data is unacknowledged
1. Which action is performed by a client when establishing communication with a server via the use of
UDP at the transport layer?
The client sets the window size for the session.
The client sends an ISN to the server to start the 3-way handshake.
The client randomly selects a source port number.
The client sends a synchronization segment to begin the session. - Answers the client randomly selects a
source port number
2. Which transport layer feature is used to guarantee session establishment?
UDP ACK flag
TCP 3-way handshake
UDP sequence number
TCP port number - Answers TCP 3-way handshake
3. What is the complete range of TCP and UDP well-known ports?
0 to 255
0 to 1023
256 - 1023
1024 - 49151 - Answers 0 to 1023
4. 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 and acknowledgment numbers
the combination of the source and destination sequence numbers and port numbers - Answers the
combination of a source IP address and port number or a destination IP address and port number
5. A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending
the file using 100-byte segments. How many segments will the server send before it requires an
acknowledgment from the PC?
,1 segment
10 segments
100 segments
1000 segments - Answers 10 segments
6. Which factor determines TCP window size?
the amount of data to be transmitted
the number of services included in the TCP segment
the amount of data the destination can process at one time
the amount of data the source is capable of sending at one time - Answers the amount of data the
destination can process at one time
7. What does a client do when it has UDP datagrams to send?
It just sends the datagrams.
It queries the server to see if it is ready to receive data.
It sends a simplified three-way handshake to the server.
It sends to the server a segment with the SYN flag set to synchronize the conversation. - Answers It just
sends the datagrams
8. Which three fields are used in a UDP segment header? (Choose three.)
Window Size
Length
Source Port
Acknowledgment Number
Checksum
Sequence Number - Answers Length
Source Port
Checksum
9. What are two roles of the transport layer in data communication on a network? (Choose two.)
, identifying the proper application for each communication stream
tracking the individual communication between applications on the source and destination hosts
providing frame delimiting to identify bits making up a frame
performing a cyclic redundancy check on the frame for errors
providing the interface between applications and the underlying network over which messages are
transmitted - Answers identifying the proper application for each communication stream
tracking the individual communication between applications on the source and destination hosts
10. What information is used by TCP to reassemble and reorder received segments?
port numbers
sequence numbers
acknowledgment numbers
fragment numbers - Answers sequence numbers
11. What important information is added to the TCP/IP transport layer header to ensure communication
and connectivity with a remote network device?
timing and synchronization
destination and source port numbers
destination and source physical addresses
destination and source logical network addresses - Answers destination and source port numbers
12. Which two characteristics are associated with UDP sessions? (Choose two.)
Destination devices receive traffic with minimal delay.
Transmitted data segments are tracked.
Destination devices reassemble messages and pass them to an application.
Received data is unacknowledged.
Unacknowledged data packets are retransmitted. - Answers Destination devices receive traffic with
minimal delay
Received data is unacknowledged
