Data Communication and Networking Practice Question and Answer

Q:

In terms of Computer Networks, what does VPN stands for: 

525 0

  • 1
    vertical personal network
    Correct
    Wrong
  • 2
    Verbal Private News
    Correct
    Wrong
  • 3
    virtual private news
    Correct
    Wrong
  • 4
    virtual Private Network
    Correct
    Wrong
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Answer : 4. "virtual Private Network "
Explanation :

 A Virtual Private Network (VPN) is a technology that allows users to create a secure and encrypted connection to another network over the internet. VPNs are commonly used to ensure privacy and security when browsing the internet, especially when using public Wi-Fi networks. VPNs create a private tunnel for data transmission, protecting users' online activities from surveillance, censorship, and potential cyber threats.

Q:

Which of the following is mandatory for sending an email?

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  • 1
    Body
    Correct
    Wrong
  • 2
    Sender Mail ID
    Correct
    Wrong
  • 3
    Attachment
    Correct
    Wrong
  • 4
    Subject
    Correct
    Wrong
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Answer : 2. "Sender Mail ID"
Explanation :

1. To send an email, the sender's email address is mandatory. An email address is a unique identifier that connects an email message to a specific user.

2. Other required information for sending the email includes-

- Recipient's Email Address

- The subject of the email

- Email Message

Q:

______ is used to transmit network data?

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  • 1
    Microwave
    Correct
    Wrong
  • 2
    Infrared
    Correct
    Wrong
  • 3
    Radio Channel
    Correct
    Wrong
  • 4
    All of the Above
    Correct
    Wrong
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Answer : 4. "All of the Above"
Explanation :

The following devices are used to transmit network data.

- Microwave (Microweb)

- Infrared

- Radio Channel

Q:

Which data transport medium has the highest data transfer rate?

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  • 1
    Twisted Cable
    Correct
    Wrong
  • 2
    Co-Axial Cable
    Correct
    Wrong
  • 3
    Optical Fiber
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Optical Fiber"
Explanation :

1. Optical fibres use total internal reflection to transfer data. The primary condition for total internal reflection is that the signal must travel from an optically denser medium to an optically rarer medium. Secondly, the angle of incidence must be greater than the critical angle.

Q:

What type of personal email account is generally used to download email to my computer?

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  • 1
    Microsoft Exchange
    Correct
    Wrong
  • 2
    POP3
    Correct
    Wrong
  • 3
    IMAP
    Correct
    Wrong
  • 4
    HTTP
    Correct
    Wrong
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Answer : 1. "Microsoft Exchange"
Explanation :

1. Personal email account Microsoft Exchange is usually used to download e-mail to your computer.

2. Microsoft Exchange Server is Microsoft's email, calendaring, contacts, scheduling, and collaboration platform.

3. It is deployed on the Windows Server operating system (OS) for business use.

4. Microsoft designed Exchange Server to provide users with access to the messaging platform from mobile devices, desktops, and web-based systems.

Q:

Extensions are called ______?

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  • 1
    D.N.S.
    Correct
    Wrong
  • 2
    E-mail symbols
    Correct
    Wrong
  • 3
    Top-Level Domain
    Correct
    Wrong
  • 4
    Web machine address
    Correct
    Wrong
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Answer : 3. "Top-Level Domain"
Explanation :

1. Extensions are called top-level domains.

2. File extensions are used so that the computer's operating system or OS can recognize the file type.

3. A file extension primarily refers to a suffix added to the end of a computer file (an object containing information, data or commands) to define the file type.

Q:

Through _______ can you link any location of the current document to another document or website?

215 0

  • 1
    Link
    Correct
    Wrong
  • 2
    Hyperlink
    Correct
    Wrong
  • 3
    Database
    Correct
    Wrong
  • 4
    Form
    Correct
    Wrong
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Answer : 2. "Hyperlink"
Explanation :

1. Through hyper link you can connect any location of the current document to another document or website.

2. Hypers are found in almost all web pages. Links allow users to click from one page to another.

Q:

Search engines perform the following tasks?

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  • 1
    Web crawling
    Correct
    Wrong
  • 2
    Indexing
    Correct
    Wrong
  • 3
    Searching
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above "
Explanation :

The search engine performs the following tasks-

1. Web crawling: Search engines search all web pages on the web using a crawler. A crawler is a program that finds new web pages by following links on the web.

2. Indexing: Once the crawler finds all the web pages, the search engine indexes them in a database. The index contains information for each web page, such as title, URL, and content.

3. Searching: When a user types a search query, the search engine searches all the web pages in the index that may be related to the query.

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