Networking 1000+ MCQ with answer for UPSC CDS

1. 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

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

3. FTP servers by default listen on port ________ for incoming connections from FTP clients.
A. 20
B. 21
C. 23
D. 25
Answer : B

4. 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

5. What is the pattern of a preamble?
A. 11110000
B. 11111111
C. 00000000
D. none of these
Answer : D

6. Which of the following states suggests that the connection has been ended either at the
request of the client or for any other reason?
A. Selected state
B. Authenticated state
C. Logout state
D. Non-authenticated state
Answer : C

7. The network interface layer specifies how to organize data into………………………..and Internet layer specifies the format of …………………….. Sent across an Internet.
A. Bits, message.
B. frame,packet.
C. packet, messge.
D. datagram, packet.
Answer : B

8. ________acts as source and destination for IP traffic.
A. Interface
B. Node
C. Host
D. Router
Answer : C

9. 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

10. 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

11. Destination physical address in ARP request is a ………………………….address.
A. Unicast
B. Broadcast
C. Multicast
D. Anycast
Answer : B

12. 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

13. The idea of sharing one network address among the multiple physical networks can be done using the following technique:
A. Supernetting
B. Subnetting
C. Transparent router
D. Both b & c
Answer : D

14. 127.0.0.1 address is reserved for internal loopback functions.
A. True.
B. False.
C.
D.
Answer : A

15. How many layers are there in the OSI model?
A. 4
B. 5
C. 6
D. 7
Answer : D

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

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

18. 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

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

20. 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

21. 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

22. 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

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

24. Which OSI model layer provides for encryption and decryption of data?
A. Data-link
B. Transport
C. Presentation
D. Application
Answer : C

25. What is 10baseT?
A. specification for twisted-pair cable
B. specification for cable terminators
C. 10 megawatt transceiver
D. 10 Mhz analog transfers
Answer : A

26. Thick Ethernet cable uses what type of connector? Select all that apply.
A. RJ-45
B. AUI
C. DB-15
D. BNC
Answer : B

27. 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

28. 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

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

30. Which of the following is defined in RFC 4366?
A. Secure File Trasfer Protocol (SFTP)
B. Trivial File Transfer Protocol (TFTP)
C. File Transfer Protocol (FTP)
D. Transport Layer Security (TLS)
Answer : D

31. 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

32. This mapping of name to IP address is done by …………………………….
A. Address resolution protocol
B. Domain name server
C. reverse address resolution protocol
D. Ethernet
Answer : B

33. ___________ is based on resources that are present within the Diffserv region.
A. Admission control
B. Packet scheduler
C. Packet classifier
D. Packet control
Answer : A

34. 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

35. In Secure Electronic Transaction, the description of the purchase and cost is contained in
________ message.
A. Authorization
B. Purchase order
C. Inquiry
D. Capture
Answer : A

36. 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

37. In an autonomous system with n areas, how many areas are connected to the backbone?
A. 1
B. N
C. N+1
D. N-1
Answer : D

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

39. Which of the following IP addresses are used by multicast devices?
A. Class D
B. Class C
C. Class B
D. Class A
Answer : A

40. 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

41. 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

42. 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

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

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

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

46. 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

47. 80 is the well-known port number for the HTTP service.
A. True.
B. False.
C.
D.
Answer : A

48. Which of the following is currently a de facto standard, commonly used for point-to-point
serial connections running TCP/IP?
A. Fiber Distributed Data Interface (FDDI)
B. Serial Line IP (SLIP)
C. Point-to-Point Protocol (PPP)
D. IEEE 802.3
Answer : B

49. 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

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