Data communication and networking Practice Question and Answer
8 Q: Which of the following devices tells the difference between multicast and unicast packets?
305 063e62d0b6149271af9b8c4c7
63e62d0b6149271af9b8c4c7- 1multicast switchtrue
- 2developedfalse
- 3advanced routerfalse
- 4multicast routerfalse
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Answer : 1. "multicast switch"
Explanation :
Multicast switch
Q: In terms of Computer Networks, what does VPN stands for:
621 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 components are used in LAN for Ethernet?
396 063edff5de6cd351b7500c59c
63edff5de6cd351b7500c59c- 1COAXfalse
- 2Fiberfalse
- 3STPfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
All three components—COAX (coaxial cables), Fiber (optical fiber cables), and STP (shielded twisted pair cables)—can be used in LANs for Ethernet connectivity, depending on specific network requirements and conditions. Different types of Ethernet cables, including coaxial, fiber optic, and shielded twisted pair, are used based on factors such as data transfer speed, distance, and susceptibility to electromagnetic interference.
Q: Which cobble is used to send modulated light?
412 063ee06080fa4111f87e466e4
63ee06080fa4111f87e466e4- 1Category 3 UTPfalse
- 2Category 5 UTPfalse
- 3fibertrue
- 4coaxfalse
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Answer : 3. "fiber"
Explanation :
It seems there might be a confusion in your question. If you are referring to the technology used for transmitting data using modulated light, the term you are looking for is "fiber optic cable" or simply "fiber." Fiber optic cables are thin, flexible strands of glass or plastic that transmit data as modulated light pulses. They are widely used for high-speed data transmission over long distances due to their ability to carry large amounts of data with low attenuation and high bandwidth capabilities.
Q: Which device is designed to send packets using package addresses?
399 063ee0676b0030e718d802957
63ee0676b0030e718d802957- 1Specialty Hubfalse
- 2switching hubtrue
- 3Port Hubfalse
- 4filtering hubfalse
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Answer : 2. "switching hub"
Explanation :
A switching hub, also known as a network switch, is designed to send packets using package addresses. A network switch operates at the data link layer of the OSI model and uses MAC addresses to forward data frames to specific devices within a local area network (LAN). Unlike a hub, which simply broadcasts data to all devices in the network, a switch intelligently forwards packets only to the device intended to receive the data, increasing network efficiency and reducing unnecessary network traffic.
Q: Which data transport medium has the highest data transfer rate?
256 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 is the complete form of Upi?
191 064b9143ca2d4dcaf04387221
64b9143ca2d4dcaf04387221- 1Unified Payment Interfacetrue
- 2Unified Pay Interfacefalse
- 3Uniform Payment Interfacefalse
- 4None of the abovefalse
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Answer : 1. "Unified Payment Interface"
Explanation :
1. UPI (Unified Payments Interface): UPI is a mobile-based payment system that allows users to transfer money from their bank accounts to any other bank account instantly and securely.
2. As a UPI user, you have to create a unique identifier called UPI ID. It is linked to your bank account. With its help, money can be easily sent and received from the bank account. For this, you do not need to share your account number or other information.
Q: Search engines perform the following tasks?
275 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.