Networking 1000+ MCQ with answer for SSC Scientific Assistant

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

2. ________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

3. 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

4. ____________ 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

5. A router receives an IP packet with source IP address 130.45.3.3 and destination IP address 202.23.4.16. The router cannot find the destination IP address in its routing table. Which ICMP message should be sent?
A. Time stamp request
B. Router solicitation
C. Destination Unreachable
D. Parameter problem on a datagram
Answer : C

6. 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

7. 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

8. ____________ developed to provide a loop-free method of exchanging routing information
between autonomous systems.
A. Enhanced Interior Gateway Routing Protocol (EIGRP)
B. User Datagram Protocol (UDP)
C. Border Gateway Protocol (BGP)
D. User Datagram Protocol (UDP)
Answer : C

9. Network administrator checks whether all the devices connected to the end-to-end path
are _________-enabled.
A. Any cast
B. Broadcast
C. Unicast
D. Multicast
Answer : D

10. How many table entries are supported by global routing table in CIDR?
A. 90,000
B. 80,000
C. 70,000
D. 60,000
Answer : D

11. 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

12. 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

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

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

15. 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

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

17. Which of the following provides control over multimedia sessions?
A. Session Initiation Protocol (SIP)
B. Session Description Protocol (SDP)
C. Session Announcement Protocol (SAP)
D. Real-time Control Protocol (RTCP)
Answer : A

18. ________is a multicast extension to OSPF Version 2.
A. Multicast Source Discovery Protocol (MSDP)
B. Distance Vector Multicast Routing Protocol (DVMRP)
C. Multicast OSPF (MOSPF)
D. Internet Group Management Protocol (IGMP)
Answer : C

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

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

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

22. 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

23. 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

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

25. 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

26. 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

27. 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

28. Which of the following protocol is used by Integrated Services for signaling of the
reservation messages?
A. Link state protocols
B. Distance Vector Multicast Routing Protocol (DVMRP)
C. Resource Reservation Protocol (RSVP)
D. Static routing protocols
Answer : C

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

30. Internet e-mail system based on the ……………………………………………..
A. FTP
B. Simple Mail Transfer Protocol (SMTP)
C. POP
D. Both SMTP and POP
Answer : B

31. 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

32. …………………… 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

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

34. Which of the following is also known as IP masquerading?
A. Fiber Distributed Data Interface (FDDI)
B. Network Address Translation (NAT)
C. Classless Inter-Domain Routing (CIDR)
D. None of the above
Answer : B

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

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

37. ___________ 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

38. Which of the following is a simplex protocol?
A. Multicast Source Discovery Protocol (MSDP)
B. User datagram protocol(UDP)
C. Resource Reservation Protocol (RSVP)
D. Internet Group Management Protocol (IGMP)
Answer : C

39. Which of the following protocols use a topology table to install routes into the IP routing
table?
A. Open Shortest Path First (OSPF)
B. Enhanced Interior Gateway Routing Protocol (EIGRP)
C. Exterior Gateway Protocol (EGP)
D. Static routing protocols
Answer : B

40. 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

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

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

43. FDDI operates on 100 Mbps.
A. True.
B. False.
C.
D.
Answer : A

44. 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

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

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

47. 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

48. 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

49. 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

50. 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