TRB-CS-VIP ONLINE COACHING CENTER ( Test-4) *Computer Networks*

Computer Networking--4

Quiz

 

1. On a class B network, how many hosts are available at each site with a subnet mask of 248?
   1.   2,046
   2.   4,094
   3.   8,190
   4.   16,382
2. What are the data transmission channels available for carrying data from one location to another?
   1.   Voiceband
   2.   Broadband
   3.   Narrowband
   4.   All of the above
3. Devices interconnected by the LAN should include
   1.   mass storage device, printers and plotters
   2.   computers and terminals
   3.   bridges and gateways
   4.   all of the above
4. A 8-Mbps token ring has a token holding timer value of 10 msec. What is the longest frame (assume header bits are negligible) that can be sent on this ring?
   1.   8,000 B frame
   2.   10,000 B frame
   3.   50,000 B frame
   4.   80,000 B frame
5. Data are sent over pin _____ of the EIA-232 interface.
   1.   1
   2.   2
   3.   3
   4.   4
6. To connect a computer with a device in the same room, you might be likely to use
   1.   a coaxial cable
   2.   a dedicated line
   3.   a ground station
   4.   all of the above
7. Demodulation is a process of
   1.   performing data description
   2.   converting analog to digital signals
   3.   converting digital to analog signals
   4.   multiplexing various signals into one high speed line signals
8. Internet-like networks between a company and its business partners. Select the best fit for answer:
   1.   Extranets
   2.   Switching alternating
   3.   Bandwidth alternatives
   4.   Inter organizational networks
9. Modulation is the process of
   1.   performing data encryption
   2.   converting digital signals to analog signals
   3.   converting analog signals to digital signals
   4.   multiplexing various signals into high speed line signals
10. Which of the following best illustrates the default subnet mask for a class A,B, and C Network?
    1.   0.0.0.0, 0.0.0.1, 0.0.1.1
    2.   255.255.255.0, 255.255.0.0, 255.0.0.0
    3.   255.0.0.0, 255.255.0.0, 255.255.255.0
    4.   255.255.0.0, 255.255.255.0, 255.255.255.255
11. You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 25 hosts and a maximum number of subnets?
    1.   255.255.255.192
    2.   255.255.255.200
    3.   255.255.255.240
    4.   255.255.255.252
12. Which of the following statement is incorrect?
    1.   The sender's IP - to- physical address binding is included in every ARP broadcast; receivers update the IP-to-Physical address binding information in their cache before processing an ARP packet.
    2.   The Addresses Resolution Protocol, ARP, allows a host to find the physical address of a target host on the same physical network, given only the target IP address.
    3.   ARP is a low-level protocol that hides the underlying network physical addressing, permitting us to assign IP-addresses of our choice to every machine.
    4.   All of the above
13. Demodulation is the process of
    1.   converting digital signals to analog signals
    2.   converting analog signals to digital signals
    3.   dividing the high-speed signals into frequency bands
    4.   combining many low speed channels into one high speed channel
14. An example of an analog communication method is
    1.   voice grade telephone line
    2.   laser beam
    3.   microwave
    4.   all of the above
15. Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?
    1.   Layer 2 protocols
    2.   Layer 5 protocols
    3.   Layer 7 protocols
    4.   Layer 10 protocols
16. What frequency range is used for FM radio transmission?
    1.   Very Low Frequency : 3 kHz to 30. kHz
    2.   Low Frequency : 30 kHz to 300 kHz
    3.   High Frequency : 3 MHz to 30 MHz
    4.   Very High Frequency : 30 MHz to 300 MHz
17. Transmission of computerised data from one location to another is called
    1.   data flow
    2.   data transfer
    3.   data management
    4.   data communication
18. Compared to analog signals, digital signals
    1.   are more accurate
    2.   allow faster transmission
    3.   both (a) and (b)
    4.   all of the above
19. HOSTS file entries are limited to how many characters?
    1.   32
    2.   255
    3.   926
    4.   Unlimited
20. If delays are recorded as 10 bit numbers in a 50 router network, and delay vectors are exchanged twice a second, how much bandwidth per fill duplex line is occupied by the distributed routing algorith
    1.   5 bps
    2.   500 bps
    3.   1000 bps
    4.   1500 bps
21. A central computer surrounded by one or more satellite computers is called a
    1.   bus network
    2.   star network
    3.   ring network
    4.   all of the above
22. An anticipated result from multi programming operations is:
    1.   better scheduling of work
    2.   the handling of more jobs
    3.   reduced computer idle time
    4.   all of the above
23. FDDI is a
    1.   ring network
    2.   mesh network
    3.   bus based network
    4.   none of the above
24. Modem is used in data transmission. When was it invented and in which country?
    1.   1950, USA
    2.   1963, USA
    3.   1950, Japan
    4.   1965, Germany
25. Which of the following technique is used for Time-To-Line (TTL)?
    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 system to avoid endlessly looping packets.
    4.   all of the above