Data Communication and Networking Practice Question and Answer

Q:

The huge computer network that connects millions of people across the world is called?

396 0

  • 1
    lane
    Correct
    Wrong
  • 2
    Hypertext
    Correct
    Wrong
  • 3
    e -mail
    Correct
    Wrong
  • 4
    Internet
    Correct
    Wrong
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Answer : 4. " Internet"
Explanation :

1. Internet means-

The Internet is a worldwide network of computers. The Internet consists of many local, regional, national and international networks. It is an international network of computers that interconnects millions of enterprises, government agencies, educational institutions individuals, etc. There is no denying the fact that the Internet has created a revolution in the way we live our lives. It has changed the way we communicate, do business and receive information, as well as our entertainment.

2. Network meaning is-

- A network is a group of computers that are interconnected through various devices so that they can communicate with each other.

Networks can be classified in many ways. One way to classify networks is based on the area they cover.

- A local Area Network (LAN) is a network in an office, building or premises.

- Metropolitan Area Network (MAN) is a network within a city.

Q:

Identify one IP address from the following:

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  • 1
    300.215.317.3
    Correct
    Wrong
  • 2
    302.215 @ 417.5
    Correct
    Wrong
  • 3
    202.50.20.148
    Correct
    Wrong
  • 4
    202-50-20-148
    Correct
    Wrong
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Answer : 3. "202.50.20.148"
Explanation :

1. IP address (Internet Protocol address) is a digital address used to identify a computer or device on the Internet or any other network.

2. IP address is a set of four numbers. It is in this format 191.150.1.38. Is visible in. The set of numbers for an IP address ranges from 0 to 255. That means the IP address ranges from 0.0.0.0 to 255.255.255.255.

Q:

How many Pins are there in VGA Cable?

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  • 1
    11
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    17
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 4. "None of these"
Explanation :

1. There are two types of VGA cables: 14-pin and 15-pin. 14-pin cables will work in most applications, but wider display compatibility may require a 15-pin cable.

Q:

Which of the following methods is used to secure and protect sensitive data on computer systems?

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  • 1
    encryption
    Correct
    Wrong
  • 2
    Defragmentation
    Correct
    Wrong
  • 3
    Formatting
    Correct
    Wrong
  • 4
    rebooting
    Correct
    Wrong
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Answer : 1. "encryption"
Explanation :

1. Encryption is the process of encoding data in cryptography.

2. This process transforms the plaintext or original representation of data into ciphertext or alternative representation of the data.

3. Only authorized parties should be able to decipher the ciphertext back into plaintext and access the original data.

4. Encryption in itself does not prevent interference, but it hinders interceptors from deciphering the content.

Q:

Which of the following statements are true for firewalls?

637 1

  • 1
    filtering network traffic
    Correct
    Wrong
  • 2
    hardware and software security
    Correct
    Wrong
  • 3
    follow the rules
    Correct
    Wrong
  • 4
    all of the above
    Correct
    Wrong
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Answer : 4. "all of the above"

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