Networking 1000+ MCQ with answer for UPSC CSE

1. What is the code used for Interpret As Command (IAC)?
A. 253
B. 255
C. 240
D. 241
Answer : B

2. In an active mode if any FTP client sends the port command "PORT 192,168,0,1,4,1" then
what will be the interpretation of port field?
A. 1024
B. 1025
C. 1023
D. 227
Answer : B

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

4. 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

5. Which of the following can support many concurrent B-channel links and one 64 Kbps Dchannel?
A. ISDN Basic Rate Interface (BRI)
B. ISDN Primary Rate Interface (PRI)
C. Point-to-Point circuit (PPP)
D. ISDN NRZ encoding
Answer : B

6. At which layer of the OSI model do FTP, SMTP, POP3, and HTTP function?
A. Physical
B. Network
C. Transport
D. Application
Answer : D

7. 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

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

9. To communicate across a TCP/IP network, you must have a DNS server and DNS clients installed.
A. True.
B. False.
C.
D.
Answer : B

10. What layer of the OSI protocol reference model does a bridge operate under?
A. Physical
B. Data-link
C. Network
D. Transport
Answer : B

11. ____________ 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

12. ARP is defined in RFC _____ and it is a current internet standard, ________
A. RFC-37, STD 903
B. RFC-903, STD 37
C. RFC 826; STD 37
D. RFC 37; STD 826
Answer : C

13. Internet Architecture Board (IAB) governs which of the following bodies?
A. Internet Assigned Number Authority (IANA)
B. Internet Research Task Force (IRTF)
C. Internet Engineering Task Force (IETF)
D. All of the above
Answer : D

14. 802.5 project standard defines Token Ring.
A. True.
B. False
C.
D.
Answer : A

15. Which of the following can translate between dissimilar protocols and network types?
A. Hub
B. Repeater
C. Switch
D. Gateway
Answer : D

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

17. Which of the following application uses 1.5 Mbps bandwidth?
A. High speed internet browsing
B. Recording for later viewing
C. Two(2)other TV'S
D. One(1)high definition TV(HDTV)
Answer : B

18. Class C network address class supports 65,534 hosts.
A. True.
B. False.
C.
D.
Answer : B

19. What does a patch cable connect to within an Ethernet network?
A. The patch panel to the hub
B. The patch panel to the wall jack
C. The wall jack to the computer
D. The NIC directly to another computer's NIC
Answer : A

20. 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

21. You wish to install a 100BaseT network. What type of cabling will you use?
A. CAT 3 UTP
B. CAT 5 UTP
C. Thinnet
D. Fiber optic
Answer : B

22. 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

23. What is the default subnet mask for a class B network?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.192.0
Answer : B

24. ------------------- is/ are caused by the random motion of the electrons in a wire and is unavoidable.
A. Dispersion
B. Thermal noise
C. Delay distortion
D. all of these
Answer : B

25. 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

26. 25 is used by SMTP
A. True.
B. False.
C.
D.
Answer : A

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

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

29. SMTP protocol is responsible for sending email across the Internet
A. True.
B. False.
C.
D.
Answer : A

30. 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

31. Which of the following protocol resolves a host's hardware address for a known IP
address?
A. InATMARP protocol
B. ATMARP protocol
C. InARP protocol
D. ARP protocol
Answer : D

32. ARP is defined in RFC _____ and it is a current internet standard, ________
A. RFC-37, STD 903
B. RFC-903, STD 37
C. RFC 826; STD 37
D. RFC 37; STD 826
Answer : C

33. 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

34. Which field in Domain Name System message format specifies the class of query?
A. Type
B. Class
C. Rdlength
D. Rdata
Answer : B

35. Which of the following protocols are considered unreliable or connectionless?
A. UDP
B. TCP
C. FTP
D. TFTP
Answer : A

36. OSPF is based on …………………
A. Distance vector routing
B. Path vector routing
C. Link state routing
D. both a and b
Answer : C

37. Which of the following IEEE specifications uses CSMA/CD?
A. 802.2
B. 802.3
C. 802.5
D. 802.11b
Answer : B

38. 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

39. A financial institution that issues the card to the purchaser is ________.
A. Merchant
B. Issuer
C. Acquirer payment gateway
D. Cardholder
Answer : B

40. BGP is …………………………………….routing protocol used to ………………………….routing table.
A. intrautonomous system, update
B. Interautonomous system, update
C. Interautonomous system, create
D. intrautonomous system, create
Answer : B

41. Data Transmission is not a layer in the OSI model
A. True.
B. False.
C.
D.
Answer : A

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

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

44. Following are the advantages of tree topology
i) Point-to-point wiring for individual segments.
ii) Supported by several hardware and software venders.
iii) Easy to install and wire
A. i) only
B. i) and ii) only
C. iii) only
D. i) ,ii) and iii)
Answer : B

45. 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

46. Which of the following algorithms are easy to implement and debug?
A. Hybrid algorithm
B. Path vector algorithm
C. Link state algorithm
D. Distance vector algorithms
Answer : D

47. Twisted-pair cable uses what type of connector?
A. RJ-11
B. XT-20
C. RJ-45
D. RJ-50
Answer : C

48. 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

49. Which piece of equipment operates at both the data-link and network layers?
A. Hub
B. Bridge
C. Brouter
D. Router
Answer : C

50. The packet transmit using standard Internet Protocol(IP) throughout the Internet by
A. Circuit switching
B. Packet switching
C. Message switching
D. None of the above.
Answer : B