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CCNA 1 v7 Modules 14 – 15: Network Application Communications Exam Answers

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.

Correct!

Wrong!

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

Correct!

Wrong!

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

Correct!

Wrong!

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

Correct!

Wrong!

What information is used by TCP to reassemble and reorder received segments?
port numbers
sequence numbers
acknowledgment numbers
fragment numbers

Correct!

Wrong!

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

Correct!

Wrong!

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.

Correct!

Wrong!

Which three fields are used in a UDP segment header? (Choose three.)
Window Size
Length
Source Port
Acknowledgment Number
Checksum
Sequence Number

Correct!

Wrong!

Which transport layer feature is used to guarantee session establishment?
UDP ACK flag
TCP 3-way handshake
UDP sequence number
TCP port number

Correct!

Wrong!

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

Correct!

Wrong!

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CCNA 1 v7 Modules 14 – 15: Network Application Communications Exam Answers

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