1.What is the loss of signal’s energy due to resistance of the medium known as?
[A] Distortion
[B] Attenuation
[C] Noise
[D] None of the above
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Answer 2 Explanation: Attenuation is the loss of signal’s energy due to resistance of the medium. It is not the same as Distortion which is the alteration of the signal due to different propagation speeds. ©navclasses
2.What do we call the process of transferring a mobile station from one base station to another?
[A] Looping
[B] Hand off
[C] Forwarding
[D] Channeling
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Answer 2Explanation: Hand off is the process of transferring an active call or data session from one cell in a cellular network to another or from one channel in a cell to another. ©navclasses
3.What is the address given to each computer on the Internet known as?
[A] Hardware number
[B] Device address
[C] IP address
[D] NET address
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Answer 3Explanation: Internet is a global network of computers each computer connected to the Internet must have a unique address. This address is known as an IP address. ©navclasses
4.Which of these is a connection-oriented network protocol?
[A] TCP
[B] IP
[C] UDP
[D] All of the above
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Answer 1Explanation: TCP stands for Transmission Control Protocol. It is a connection oriented protocol and offers end-to-end packet delivery. TCP acts as a backbone for connections. ©navclasses
5.Which port is used by HTTP?
[A] 443
[B] 80
[C] 22
[D] 79
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Answer 1Explanation: HTTP stands for Hypertext Transfer Protocol. It uses port 80 to communicate whereas HTTPS used port number 443 for communication. ©navclasses
6.Which of these protocols is used to querying and modifying directory services running over a network?
[A] NTP
[B] LDAP
[C] SNMP
[D] None of the above
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Answer 2Explanation: Lightweight Directory Access Protocol, or LDAP is a networking protocol for querying and modifying directory services running over the network. ©navclasses
7.Which of these network protocol is used to synchronize the time of a server to another server?
[A] IGMP
[B] ARP
[C] NTP
[D] SSH
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Answer 3Explanation: The Network Time Protocol is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ©navclasses
8.Which of the following is an e-commerce website?
[A] Amazon.com
[B] Flipkart.com
[C] Alibaba.com
[D] All of the above
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Answer 4Explanation: An e-commerce site is a site offering goods and services for online sale and enabling online transactions for such sales. Examples are Amazon.com, Flipkart.com and Alibaba.com. ©navclasses
9.In which year Google search engine was launched?
[A] 1996
[B] 1998
[C] 1999
[D] 2001
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Answer 2Explanation: Google search engine was launched in 1998. It is the most visited website in the world. It was founded by Larry Page and Sergey Brin. ©navclasses
10.Which country Xiaomi mobile belongs to?
[A] China
[B] USA
[C] UK
[D] South Korea
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Answer 1Explanation: Xiaomi Corporation is a Chinese electronics company having its headquarters in Beijing. Xiaomi makes smartphones, mobile apps, laptops, and related consumer electronics. ©navclasses