Question 26) Which protocol is used to control data sending and receiving between mail servers in E-mail communications ? Question 26 options: FTP POP3 SMTP IMAP Question 27 (1 point) For the Web application, the user agent is______ Question 27 options: the user's monitor the user's mouse the user's keyboard none of them Question 28 (1 point) Network congestion occurs_______ Question 28 options: in case of transfer failure when a system terminates in case of traffic overloading when connection between two nodes terminates Question 29 (1 point) Which of the following services CANNOT be provided by TCP ? Question 29 options: reliable data transfer at transport layer flow control connection management packets routing Question 30 (1 point) To establish typical TCP connections, which option will be adopted? Question 30 options: 5-way handshake 2-way handshake 3-way handshake 4-way handshake

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Question 26) Which protocol is used to control data sending and receiving between mail servers in E-mail communications ?

Question 26 options:

FTP

POP3

SMTP

IMAP

Question 27 (1 point)

For the Web application, the user agent is______

Question 27 options:

the user's monitor

the user's mouse

the user's keyboard

none of them

Question 28 (1 point)

Network congestion occurs_______

Question 28 options:

in case of transfer failure

when a system terminates

in case of traffic overloading

when connection between two nodes terminates

Question 29 (1 point)

Which of the following services CANNOT be provided by TCP ?

Question 29 options:

reliable data transfer at transport layer

flow control

connection management

packets routing

Question 30 (1 point)

To establish typical TCP connections, which option will be adopted?

Question 30 options:

5-way handshake

2-way handshake

3-way handshake

4-way handshake