networking-mcqs - Set (1)

Correct Answer: Orange && Worng Answer: Red

1. In the layer hierarchy as the data packet moves from the upper to the lower layers headers are.

  • (A). Added
  • (B). Removed
  • (C). Rearranged
  • (D). Modified
    • View Answer

    Explanation: Each layer adds its own header to the packet from the previous layer. For example, in the Internet layer, the IP header is added over the TCP header on the data packet that came from the transport layer.

    2. The first Network

  • (A). CNNET
  • (B). NSFNET
  • (C). ASAPNET
  • (D). ARPANET
    • View Answer

    Explanation: ARPANET stands for Advanced Research Projects Agency Networks. It was the first network to be implemented which used the TCP/IP protocol in the year 1969.

    3. These factors affect transmission rate in DSL

  • (A). The gauge of the twisted-pair line
  • (B). Degree of electrical interface
  • (C). Shadow fading
  • (D). Both (A) and (B)
    • View Answer

    Explanation: Because DSL is made of twisted wire copper pair, the gauge of twisted pair line i.e. the protection and electrical interference would affect the transmission rate in DSL.

    4. HFC contains

  • (A). Fiber cable
  • (B). Coaxial cable
  • (C). Both (A) and (B)
  • (D). None
    • View Answer

    Explanation: Hybrid fiber-coaxial (HFC) is a telecommunications industry term for a broadband network that combines optical fiber and coaxial cable. It has been popularly used since the early 1990s.

    5. Which they are presented

  • (A). Semantics
  • (B). Syntax
  • (C). Timing
  • (D). All of the above
    • View Answer

    Explanation: Not Avilable

    6. Transmission data rate is decided by

  • (A). Network layer
  • (B). Physical layer
  • (C). Data link layer
  • (D). Transport layer
    • View Answer

    Explanation: Basically the transmission speed is determined by the cables and connectors used. Hence it is physical layer that determines the transmission speed in network.

    7. In DSL telco provides these service-

  • (A). Wired phone access
  • (B). ISP
  • (C). All of the mentioned
  • (D). None of the mentioned
    • View Answer

    Explanation: DSL stands for Digital Subscriber Line and ISP stands for Internet Service Provider. In a Digital Subscriber Line system, the same company which provides phone connection is also an ISP.

    8. Which transmission media has the highest transmission speed in a network?

  • (A). Coaxial cable
  • (B). Twisted pair cable
  • (C). Optical fiber
  • (D). Electrical cable
    • View Answer

    Explanation: Fiber optics is considered to have the highest transmission speed among the all mentioned above. The fiber optics transmission runs at 1000Mb/s.

    9. Which one of the following is not a function of the network layer?

  • (A). Routing
  • (B). Inter-networking
  • (C). Congestion control
  • (D). None of the mentioned
    • View Answer

    Explanation: In the OSI model, network layer is the third layer and it provides data routing paths for network communications.

    10. Header of a frame generally contains

  • (A). Synchronization bytes
  • (B). Address
  • (C). Frame identifier
  • (D). All of the mentioned
    • View Answer

    Explanation: In a frame, the header is a part of the data that contains all the required information about the transmission of the file.

    11. User data-gram protocol is called connection-less because

  • (A). All UDP packets are treated independently by transport layer
  • (B). It sends data as a stream of related packets
  • (C). It is received in the same order as set order
  • (D). None of the mentioned
    • View Answer

    Explanation: UDP is an alternative for TCP and it is used for those purposes where speed matters most whereas loss of data is not a problem.

    12. Common gateway interface is used to

  • (A). Generate executable files from web content by web server
  • (B). Generate web server
  • (C). Stream videos
  • (D). None of the mentioned
    • View Answer

    Explanation: Not Avilable

    13. Physical or logical arrangement of network is

  • (A). Topology
  • (B). Routing
  • (C). Networking
  • (D). None
    • View Answer

    Explanation: Topology defines the structure of the network of how all the components are interconnected to each other.

    14. Data communication system spanning states of countries or the whole world is

  • (A). LAN
  • (B). WAN
  • (C). MAN
  • (D). None
    • View Answer

    Explanation: WAN is the abbreviation for Wide Area Network. This network extends over a large geographical area. WANs are used to connect cities, states or even countries.

    15. TCP groups a number of bytes together into a packet called

  • (A). Packet
  • (B). Buffer
  • (C). Segment
  • (D). Stack
    • View Answer

    Explanation: Segment is a grouping of number of bytes together into a packet.

    16. Which multiple access techniques is used by IEEE802.11 standard for wireless LAN ?

  • (A). CDMA
  • (B). CSMA/CA
  • (C). ALOHA
  • (D). None
    • View Answer

    Explanation: CSMA/CA stands for Carrier-sense multiple access/collision avoidance. It is a multiple access protocol used by IEEE 802.11 standard for wireless LAN.

    17. What is WPS ?

  • (A). Wi-fi protected access
  • (B). Wired protected access
  • (C). Wired process access
  • (D). Wi-fi process access
    • View Answer

    Explanation: WPS stands for Wi-Fi Protected Setup. It is a wireless network security standard that tries to make connections between a router and wireless devices faster and easier.

    18. The DOS attack is which the attacker sends deluge of packets to the targeted host.

  • (A). Vulnerability attack
  • (B). Bandwidth flooding
  • (C). Connecting flooding
  • (D). All of the mentioned
    • View Answer

    Explanation: In Bandwidth flooding, the attacker floods the victim machine with a deluge of packets to make sure that no bandwidth is available. The victim then cannot utilize the complete bandwidth to perform its operation.

    19. Method(s) to move data through a network of links and switches

  • (A). Packet switching
  • (B). Circuit switching
  • (C). Line switching
  • (D). Both (A) and (B)
    • View Answer

    Explanation: Packet switching and Circuit switching are two different types of switching methods used to connect the multiple communicating devices with one another.

    20. The number of layers in internet protocol stack

  • (A). 5
  • (B). 7
  • (C). 6
  • (D). None
    • View Answer

    Explanation: There are five layers in the Internet Protocol stack. he internet protocol stack model is also called the TCP/IP model.

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