LSAT - Networking 1000+ MCQ [Solved] PDF Download

1. Which of the following can provide a backbone network of 600 meters in length without using repeaters?
A. 10BaseT
B. 100BaseT
C. 10Base5
D. 100BaseFX
Answer : D

2. Which of the following transmission media suffers more from transmission impairment?
A. coaxial cable
B. Optical fiber
C. twisted pair
D. wave guides
Answer : C

3. A time exceeded message is generated if ………………………………………………….
A. The round trip time between hosts is close to zero.
B. The Time-to Live field has a zero value.
C. Fragments of a message do not arrive within a set time
D. both b & c
Answer : D

4. Which cable type is immune to outside interference and crosstalk?
A. Thinnet
B. Thicknet
C. Twisted pair
D. Fiber optic
Answer : D

5. In ----------------------- configuration, the switch begins to forward the packet as soon as it is received. No error checking is performed on the packet, so the packet is moved through very quickly.
A. cut-free
B. franment-free
C. store-and-forward
D. cut-through
Answer : D

6. Which of the following are not the standard representations defined by Telnet protocol?
A. IP and AO
B. YTA and WAY
C. EC and EL
D. SYNCH
Answer : B

7. Which of the following is required to communicate between two computers?
A. Communications software
B. Protocol
C. Communication hardware
D. All of the above including access to transmission medium
Answer : D

8. ----------------is a static algorithm in which every incoming packet is sent out on every outgoing line except the one it arrives on.
A. Distance vector
B. Congestion
C. Link state routing
D. Flooding
Answer : D

9. 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

10. Which of the following versions will replace IPv4 Internet layer?
A. IPv4.1
B. IPv5.1
C. IPv6
D. IPv5.2
Answer : C

11. AppleTalk protocol configures hosts in zones on the network.
A. True.
B. False.
C.
D.
Answer : A

12. Which directory service is used in Windows 2000 Server?
A. Active Directory
B. SAM
C. NDS
D. Bindery
Answer : A

13. 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

14. Which of the following can be used to transfer files from a Unix server?
A. FTP
B. Telnet
C. IPX
D. Netstat
Answer : A

15. _______ Domain name corresponds to US military.
A. .us mili
B. .mili
C. .mil
D. .us
Answer : C

16. Which layer of the OSI model does a switch operate in?
A. Physical
B. Data-link
C. Network
D. Transport
Answer : B

17. In the symmetric-key method of cryptography, which key is publicly known?
A. Encryption key only
B. Decryption key only
C. Both
D. None of the above
Answer : B

18. Internet Research Task Force (IRTF) body looks after ________.
A. The research projects of TCP/IP suit
B. Technical related issues
C. Development of standards like Requests for Comments
D. Maintenance of Internet
Answer : A

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

20. 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

21. In 1996, 36.44% of _________ addresses were brought in use.
A. Class A
B. Class D
C. Class B
D. Class C
Answer : D

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

23. Which of the following provides the service for any casting?
A. IPV5
B. IPV6
C. IPV7
D. IPV8
Answer : B

24. Which is the port used by POP3?
A. 69
B. 110
C. 143
D. 443
Answer : B

25. Which of the following address supports 254 hosts on each of 2 million networks?
A. Class D addresses
B. Class A addresses
C. Class C addresses
D. Class B addresses
Answer : C

26. The generic domain name for air transport industry is ________.
A. biz
B. air
C. aero
D. fly
Answer : C

27. 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

28. Which is the port used by POP3?
A. 69
B. 110
C. 143
D. 443
Answer : B

29. What is the maximum length of thick Ethernet cable before a signal booster is needed?
A. 500 feet
B. 500 meters
C. 1000 feet
D. 2 miles
Answer : B

30. preamble field of 802.3 frames is encoded using ------------------- encoding
A. Manchester
B. differential Manchester
C. Bi polar
D. uni polar
Answer : A

31. 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

32. 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

33. 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

34. 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

35. 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

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

37. 802.5 project standard defines Token Ring.
A. True.
B. False
C.
D.
Answer : A

38. DSL stands for ------------------------
A. data subscriber lines
B. dual subscriber lines
C. delay subscriber lines
D. digital subscriber lines
Answer : D

39. Which of the following protocols were designed for terminal emulation to connect dissimilar systems?
A. Domain Name System
B. FTP
C. Telnet
D. Control Message Protocol
Answer : C

40. What is the default port for Telnet?
A. 23
B. 21
C. 25
D. 80
Answer : A

41. Which of the following headers does a router look at to find how to route a data packet?
A. Ethernet frame header
B. MAC address
C. Application header
D. IP header
Answer : D

42. AppleTalk protocol configures hosts in zones on the network.
A. True.
B. False.
C.
D.
Answer : A

43. 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

44. Which of the following request in Session Initiation Protocol (SIP) queries the capabilities of
servers?
A. CANCEL
B. ACK
C. OPTIONS
D. PRACK
Answer : C

45. Pure ALOHA has a maximum throughput of -----------
A. 16.4 %
B. 18.4 %
C. 7.4 %
D. 1 %
Answer : B

46. 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

47. What is used to boost a digital signal?
A. amplifier
B. digi-booster
C. multiplexer
D. booster
Answer : D

48. What is the maximum distance of single-mode fiber (SMF)?
A. 300 meters
B. 500 meters
C. 2km
D. 850 meters
Answer : C

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

50. What is the maximum length of twisted-pair cable before a signal booster is needed? Select all that apply.
A. 25 meters
B. 100 meters
C. 328 feet
D. 1000 feet
Answer : B