Câu hỏi về giao thức mạng

What action is performed by a client when establishing communication with a server using UDP at the transport layer?

• The client sets the window size for the session.

• The client sends an ISN to the server to initiate the three-way handshake process.

• The client randomly selects a source port number.

• The client sends a synchronization segment to start the session.

Which feature of the transport layer is used to ensure session establishment?

• UDP ACK flag

• TCP three-way handshake process

• UDP sequence number

• TCP port number

What is the complete range of TCP and UDP ports?

• 0 to 255

• 0 to 1023

• 256 - 1023

• 1024 - 49151

What is a socket?

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

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

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

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

A PC is downloading a large file from a server. The TCP window size is 1000 bytes. The server is sending the file in segments of 100 bytes. How many segments will the server send before requesting an acknowledgment from the PC?

• 1 segment

• 10 segments

• 100 segments

• 1000 segments

Which factor determines the size of the TCP window?

• Amount of data to be transmitted

• Number of services included in the TCP segment

• Amount of data that the destination can process at one time

• Amount of data that the source can send at one time

What does a customer do when they have 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 simple three-way handshake process to the server.

• It sends a segment to the server with the SYN flag set to synchronize the conversation.

Which fields are used in the UDP header? (Choose three.)

• Window size

• Checksum

• Source port

• Length

• Acknowledgment number

What is the role of the transport layer in data communication over a network? (Select two.)

• Identify the appropriate application for each communication stream

• Monitor personal communication between applications on source and destination servers

• Provide frame delimitation to identify the bits that make up a frame

• Perform frame redundancy checks to detect errors

• Provide an interface between applications and the underlying network infrastructure through which messages are transmitted

Which information is used by TCP to reassemble and order the received segments?

• Port number

• Sequence number

• Acknowledgment number

• Fragment number