Computer Networks Mid - I, September - 2014

1.The International Standards Organization (ISO) is the international organization for Standardization was established in the year?
  • 1945
  • 1946
  • 1947
  • 1948
Answer: B
2.Which layer is fourth layer from physical layer in the OSI model?
  • Session Layer
  • Data link Layer
  • Transport Layer
  • Network Layer
Answer: C
3.Which Protocol is the connection oriented protocol in the TCP/IP protocol suite?
  • UDP
  • IP
  • ARP
  • TCP
Answer: D
4.This transforms and encodes the information in such a way as to produce electromagnetic signals that can be transmitted across some sort of transmission system?
  • Transmitter
  • Receiver
  • Encoder
  • Decoder
Answer: A
5.In which data transmission, all bits of the binary data are transmitted simultaneously?
  • Serial
  • Parallel
  • Asynchronous
  • Synchronous
Answer: B
6.Which of the following coming under unguided transmission media?
  • Wireless
  • Optical Fiber
  • Twisted Pair
  • Copper wire
Answer: A
7.Which of the following is the sub layer of Data link layer?
  • Ethernet
  • Token Ring
  • Media Access Control
  • Bus
Answer: C
8.Error Detection and Correction is done at which of the following layers?
  • Physical Layer
  • Data Link Layer
  • Network Layer
  • Transport Layer
Answer: B
9.The MAC layer emulates which type of communication channel in a multi-point network?
  • Full-duplex logical
  • Simplex
  • Half-duplex logical
  • None
Answer: A
10.CSMA/CA protocol is used in which type of networks?
  • Token Ring
  • Ethernet
  • IEEE802.11
  • None
Answer: C
11.Data communications protocols are _____________________governing the orderly exchange of data within the network or a portion of the network.
Answer: Sets of rules
12.TCP/IP stands for ________________________.
Answer: Transmission Control Protocol/ Internetworking Protocol
13._____________ converts Analog signal into Digital Signals and vice-versa.
Answer: MODEM
14._____________ takes ‘n’ no. of inputs and gives one output.
Answer: Multiplexer
15.The term virtual circuit is also synonymous with ____________and ____________.
Answer: Virtual connection, virtual channel.
16. Examples of data link protocols for Local Area Networks ____________.
Answer: Ethernet
17._____________is a bit-oriented code-transparent synchronous data link layer protocol developed by the International Organization for Standardization (ISO).
Answer: High-Level Data Link Control (HDLC)
18.CSMA/CD stands for____________________.
Answer: Carrier Sense Multiple Access With Collision Detection (CSMA/CD)
19.The local network addresses used in IEEE 802 networks and FDDI networks are called __________.
Answer: MAC addresses
20.Fast Ethernet was introduced in 1995 and remained the fastest version of Ethernet for three years before being superseded by _____________.
Answer: Gigabit Ethernet