Networking 1000+ MCQ with answer for GRE

1. If the organization allocates 10 bits as subnet number, to identify a physical network, then the organization can have at the most……………. networks and each of these networks that can support only…………………...hosts.
A. 1022 networks, 62 hosts.
B. 62 networks, 1022 hosts.
C. 4094 networks, 14 hosts.
D. 14 networks, 4094 hosts.
Answer : A

2. Which of the following is the port used by SMTP?
A. 21
B. 23
C. 25
D. 80
Answer : C

3. What is the length of MARKER field in BGP message header?
A. 1 byte
B. 2 byte
C. 16 byte
D. 19 byte
Answer : C

4. Which of the following is used for establishing, configuring, and testing the data-link
Link Control Protocol (LCP)
A. Method
B. Network Control Protocols (NCPs)
C. Link Control Protocol (LCP)
D. File transfer protocol(FTP)
Answer : C

5. Which of the following network topologies has the highest level of redundancy?
A. Bus
B. Star
C. Star
D. Mesh
Answer : D

6. What is attenuation?
A. cable noise
B. cable shortage
C. loss of signal strength
D. unwanted signals on the network
Answer : C

7. Which of the following protocols is described in RFC 793?
A. Address Resolution Protocol (ARP)
B. Transmission Control Protocol (TCP)
C. Bootstrap Protocol (BOOTP)
D. User Datagram Protocol (UDP)
Answer : B

8. The Point-to-Point Protocol (PPP) is described in which of the following?
A. RFC 3390 AND RFC 3392
B. RFC 1661 AND RFC 1662
C. RFC 2490 AND RFC 2492
D. RFC 2225 AND RFC 2226
Answer : B

9. Which of the following delivery methods works with only one source and one destination? Multicast
A. Multicast
B. Broadcast
C. Unicast
D. Any cast
Answer : C

10. Which of the following is the IEEE specification for wireless networks?
A. 802.3
B. 802.5
C. 802.2
D. 802.11b
Answer : D

11. Which class does the IP address 202.119.22.31 belong to?
A. Class A
B. Class B
C. Class C
D. APIPA
Answer : C

12. If user A wants to send an encrypted message to user B, the plaintext is encrypted with the public key of ………….
A. Skeleton
B. Private
C. Public
D. Symmetric
Answer : D

13. Select the class C IP address from the following:
A. 122.10.8.25
B. 170.5.88.2
C. 191.5.26.1
D. 207.67.112.55
Answer : D

14. What is the IEEE specification for Ethernet?
A. 802.1
B. 802.2
C. 802.3
D. 802.4
Answer : C

15. 802.5 project standard defines Token Ring.
A. True.
B. False
C.
D.
Answer : A

16. The general form of the SMTP destination address is ________________.
A. user% remote-host@gateway-host
B. user@host
C. local-part@domain-name
D. None of the above
Answer : C

17. What can be used in the place of DNS to resolve host names to IP addresses?
A. WINS
B. LMHosts
C. Hosts
D. DHCP
Answer : C

18. Which of the following defines a family of standards for 100 Mbps fiber optic LANs that
provides the physical layer and media access control sub-layer of the data link layer, as
defined by the ISO/OSI Model?
A. Ethernet
B. IEEE 802
C. Fiber Distributed Data Interface (FDDI)
D. Point-to-Point Protocol (PPP)
Answer : C

19. --------------- is/are used for error detection.
A. Parity bit
B. checksum
C. both A) and B)
D. neither A) nor B).
Answer : C

20. Your Web server is also configured as an FTP server. What part of the data packet will tell the server which application the data is meant for?
A. Port
B. IP address
C. MAC address
D. Frame header
Answer : A

21. A network's Internet connection uses a 128-Kbps Basic Rate Interface (BRI). What type of connection is this?
A. DSL
B. Cable modem
C. ISDN
D. T1
Answer : C

22. Videoconferencing is an example for…………………… communication
A. Simplex
B. Half duplex
C. Full duplex
D. serial
Answer : C

23. ICMP messages require ………………. levels of encapsulation
A. One
B. Two
C. Three
D. Four
Answer : B

24. Which of the following use default routes for inter domain routing?
A. Type 2
B. Type 4
C. Type 3
D. Type 1
Answer : B

25. Your network has gotten a single class C address but has 300 computers. How can you connect them to the Internet?
A. Use IPX.
B. Implement NAT.
C. Use DHCP.
D. Use DNS.
Answer : B

26. Which of the following is a media type that is most susceptible to interference?
A. Shielded twisted pair (STP)
B. Fiber optics
C. Unshielded twisted pair (UTP)
D. Coaxial
Answer : C

27. Which of the following filed represents the sender of the message in an electronic mail?
A. To
B. From
C. Cc
D. Reply-to
Answer : B

28. Which of the following was initially designed as a video and audio compression standard?
A. MPEG-1
B. MPEG-2
C. MPEG-4
D. MPEG-3
Answer : A

29. ____________ was developed to support aggregation and summarization of routing
information.
A. Static Routing protocol
B. Enhanced Interior Gateway Routing Protocol (EIGRP)
C. Routing Information Protocol (RIP)
D. Border Gateway Protocol (BGP)
Answer : D

30. ADSL uses high-speed Internet service phone lines
A. True.
B. False.
C.
D.
Answer : A

31. You've taken your Windows 2000 laptop to a client's network and plugged it in. Your computer is configured for an IP network over 100BaseT using DHCP. You can't connect, even though the client says that DHCP is working on his 100BaseT network. What should
A. Use Ipconfig /release to release the old DHCP address.
B. Use Winipcfg and click Release to release the old DHCP address.
C. Use Ifconfig to initialize the NIC.
D. Use Tracert to determine the problem.
Answer : A

32. T1 makes up 24 channels.
A. True.
B. False.
C.
D.
Answer : A

33. ________allows receiver to inform sender about the successful receiving of all the
segments.
A. SACK-permitted Option
B. Window scale option
C. Selective Acknowledgment (SACK)
D. Maximum segment size option
Answer : C

34. Which of the following SIP request terminates a call?
A. ACK
B. BYE
C. INVITE
D. CANCEL
Answer : B

35. The worldwide Internet is a well-known example of ------------------.
A. PAN
B. Subnet
C. Intra-Network
D. Inter-network
Answer : D

36. The key concern in the design of transmission system is -------------- and ---------------
A. data rate ,distance
B. speed, accuracy
C. accuracy, simplicity
D. distance , cost
Answer : A

37. Which function is not supported by E-mail?
A. authentication
B. composition
C. Disposition
D. Displaying
Answer : A

38. In the IP address 129.2.8.9, what does 129.2 specify?
A. Protocol address
B. Router address
C. Host number
D. Network number
Answer : D

39. T1 makes up 24 channels.
A. True.
B. False.
C.
D.
Answer : A

40. Which Layer is Responsible for Congestion Control?
A. Network Layer
B. Datalink Layer
C. Transport Layer
D. D) Application layer
Answer : C

41. …………………… have a single communication channel that is shared by all the users on the network.
A. Point-to-point
B. Broadcast networks
C. Protocol
D. PAN
Answer : B

42. In ________ routing, the tunnel creates a bridge through areas that do not support
multicast traffic.
A. Internet
B. MBONE
C. Border Gateway Protocol
D. Multicast OSPF
Answer : B

43. What is the address identified when socket is available at each end of TCP?
A. "<TCP, IP address, socket number>."
B. "<TCP, Host address, port address>."
C. "<TCP, IP address, port number>."
D. "<TCP, Network address, socket address>."
Answer : C

44. Using a class B address maximum of …………………networks can be defined with up to……………………..hosts per networks.
A. 2,097,152-------------254
B. 16,384-----------------65,536
C. 16,384---------------65,534
D. 126--------------------16,777,214
Answer : C

45. …………………………..combines characteristics of linear bus and star topologies.
A. Ring topology
B. A hybrid topology
C. A tree topology
D. mesh topology
Answer : C

46. TCP protocol is responsible for connection-oriented communication
A. True.
B. False.
C.
D.
Answer : A

47. _________ is a type of domain name queries.
A. Linear
B. Iterative
C. Grouped
D. Parallel
Answer : B

48. Which of the following provides a structure for conveying message through TCP/IP network
to host?
A. Address Resolution protocol (ARP)
B. Internet Control Message Protocol (ICMP)
C. Bootstrap Protocol (BOOTP)
D. Dynamic Host Configuration Protocol (DHCP)
Answer : D

49. Transmission medias are classified into two main categories, which are -------------- and --------------------.
A. twisted pair, coaxial
B. guided , unguided
C. analog, digital
D. synchronous, Asynchronous
Answer : B

50. You are browsing www.microsoft.com on a machine named host.contoso.org.. What is the order of domain name resolution?
A. Contoso.com, contoso.org, microsoft.com, com
B. Contoso.com, org, microsoft.org, org
C. Contoso.org, org, root [.], com, microsoft.com
D. Microsoft.com, com, org, contoso.org
Answer : C