TRB-CS-VIP ONLINE COACHING CENTER ( Test-1) *Computer Networks*

TRB-CS-VIP ONLINE COACHING CENTER ( Test-1) *Computer Networks* 

TRB-CS-VIP ONLINE COACHING CENTER ( Test-1) *Computer Networks*
Computer Networking
Computer Networking
Computer NetworkiNG-1

Quiz

 

1. 1 . What device separates a single network into two segments but lets the two segments appear as one to higher protocols?
   
   1.   Switch
   2.   Bridge
   3.   Router
   4.   Gateway
2. 2 . How many digits of the DNIC (Data Network Identification Code) identify the country?
   1.   first
   2.   first two
   3.   first three
   4.   first four
3. 3 . A station in a network forwards incoming packets by placing them on its shortest output queue. What routing algorithm is being used?
   
   1.   flooding
   2.   delta routing
   3.   static routing
   4.   hot potato routing
4. 4 . Frames from one LAN can be transmitted to another LAN via the device
   
   1.   Bridge
   2.   Router
   3.   Modem
   4.   Repeater
5. 5 . Which of the following condition is used to transmit two packets over a medium at the same time?
   
   1.   Collision
   2.   Contention
   3.   Synchronous
   4.   Asynchronous
6. 6 . The _____ houses the switches in token ring.
   1.   NIC
   2.   MAU
   3.   transceiver
   4.   nine-pin connector
7. 7 . The packets switching concept was first proposed
   1.   in the late 1950s for Defense Ministry of US
   2.   in the late 1980s for the Defense Ministry of US
   3.   in the early 1960s for military communication systems, mainly to handle speech
   4.   All of the above
8. 8 . Telecommunication networks frequently interconnect an organization with its customers and suppliers. Select the best fit for answer:
   1.   Extranets
   2.   Switching alternating
   3.   Bandwidth alternatives
   4.   Inter organizational networks
9. 9 . The geostationary satellite used for communication systems
   
   1.   rotates with the earth
   2.   is positioned over equator
   3.   remains stationary relative to the earth
   4.   All of the above
10. 10 . You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Whi
    1.   255.248.0.0
    2.   255.252.0.0
    3.   255.254.0.0
    4.   255.255.255.255
11. 11 . What are the most commonly used transmission speeds in BPS used in data communication?
    
    1.   500
    2.   1200
    3.   2400
    4.   9600
12. 12 . What is the default subnet mask for a class C network?
    1.   127.0.0.1
    2.   255.0.0.0
    3.   255.255.0.0
    4.   255.255.255.0
13. 13 . Which of the following is used for modulation and demodulation?
    1.   modem
    2.   gateway
    3.   protocols
    4.   multiplexer
14. 14 . Which of the following is not a disadvantage of wireless LAN?
    
    1.   interference of transmissions from different computers
    2.   slower data transmission
    3.   higher error rate
    4.   all of the above
15. 15 . Which of the following does not allow multiple users or devices to share one communications line?
    1.   controller
    2.   concentrator
    3.   doubleplexer
    4.   multipplexer
16. 16 . Which of the following is required to communicate between two computers?
    
    1.   protocol
    2.   communications software
    3.   communications hardware
    4.   all of the above
17. 17 . Which of the following types of channels moves data relatively slowly?
    1.   wideband channel
    2.   voiceband channel
    3.   broadband channel
    4.   narrowband channel
18. 18 . With an IP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts?
    1.   222
    2.   233
    3.   241
    4.   252
19. 19 . How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host?
    
    1.   16 - bits
    2.   32 - bits
    3.   48 - bits
    4.   64 - bits
20. 20 . The Internet Control Message Protocol (ICMP)
    1.   A. reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
    2.   provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
    3.   allows gateways to send error a control messages to other gateways or hosts
    4.   All of the above
21. 21 . Your company has a LAN in its downtown office and has now set up a LAN in the manufacturing plant in the suburbs. To enable everyone to share data and resources between the two LANs, name the device
    
    1.   Hub
    2.   Cable
    3.   Router
    4.   Modem
22. 22 . The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver
    1.   cannot talk at once
    2.   can send or receive data one at a time
    3.   can do one way data transmission only
    4.   can receive and send data simultaneously
23. 23 . How many hosts are attached to each of the local area networks at your site?
    
    1.   64
    2.   128
    3.   254
    4.   256
24. 24 . Which of the following technique is used for fragment?
    
    1.   one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
    2.   a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
    3.   a technique used in best-effort delivery systems to avoid endlessly looping packet
    4.   all of the above
25. 25 . Internet-like networks within an enterprise called -
    1.   Intranets
    2.   Extranets
    3.   Switching alternating
    4.   Inter organizational networks