Data Communication and Networking Practice Question and Answer
8 Q: In terms of Computer Networks, what does VPN stands for:
860 063ac17eb5770eb565d5d95b9
63ac17eb5770eb565d5d95b9- 1vertical personal networkfalse
- 2Verbal Private Newsfalse
- 3virtual private newsfalse
- 4virtual Private Networktrue
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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?
887 064ba83c82d3130f57543bf7c
64ba83c82d3130f57543bf7c- 1Bodyfalse
- 2Sender Mail IDtrue
- 3Attachmentfalse
- 4Subjectfalse
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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?
481 064ba7665e2108a7239398369
64ba7665e2108a7239398369- 1Microwavefalse
- 2Infraredfalse
- 3Radio Channelfalse
- 4All of the Abovetrue
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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?
451 064ba711888d5e4f52de3b7da
64ba711888d5e4f52de3b7da- 1Twisted Cablefalse
- 2Co-Axial Cablefalse
- 3Optical Fibertrue
- 4None of thesefalse
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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?
462 064ba5fc9568e7ff594c24263
64ba5fc9568e7ff594c24263- 1Microsoft Exchangetrue
- 2POP3false
- 3IMAPfalse
- 4HTTPfalse
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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 ______?
406 064b91fe02dc867f59303d96d
64b91fe02dc867f59303d96d- 1D.N.S.false
- 2E-mail symbolsfalse
- 3Top-Level Domaintrue
- 4Web machine addressfalse
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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?
464 064b918ce2d3130f5753f2d77
64b918ce2d3130f5753f2d77- 1Linkfalse
- 2Hyperlinktrue
- 3Databasefalse
- 4Formfalse
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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?
471 064b9139ee154aff53380df03
64b9139ee154aff53380df03- 1Web crawlingfalse
- 2Indexingfalse
- 3Searchingfalse
- 4All of the abovetrue
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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.