Gate Computer Science Networking Test - Set 28 - ObjectiveBooks

Gate Computer Science Networking Test - Set 28

Practice Test: Question Set - 28

1. On a class B network, how many hosts are available at each site with a subnet mask of 248?
    (A) 16,382
    (B) 8,190
    (C) 4,094
    (D) 2,046

2. A T-switch is used to
    (A) Control how messages are passed between computers
    (B) Echo every character that is received
    (C) Transmit characters one at a time
    (D) Rearrange the connections between computing equipment

3. Baseband is
    (A) Transmission of signals without modulation
    (B) A signal all of whose energy is contained within a finite frequency range
    (C) The simultaneous transmission of data to a number of stations
    (D) None of the above

4. If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is
    (A) 1200 bands
    (B) 3200 bands
    (C) 4800 bands
    (D) 9600 bands

5. Many large organizations with their offices in different countries of the world connect their computers through telecommunication satellites and telephone lines. Such a communication network is called
    (A) LAN
    (B) WAN
    (C) ECONET

6. When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system?
    (A) Security procedure
    (B) Safeguard procedure
    (C) Identification procedure
    (D) Log-on procedure

7. What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers?
    (A) 16
    (B) 9
    (C) 8
    (D) 4

8. Networks that follow the 802.5 standard appear to be in a star topology but are actually operating in what type of topology?
    (A) Linear bus
    (B) Modified star
    (C) Modified ring
    (D) Ring

9. You are in the process of analyzing a problem that requires you to collect and store TCP/IP Packets. Which of the following utilities is best suited for this purpose?
    (B) Performance Monitor
    (D) Network Monitor

10. Internet-like networks between a company and its business partners. Select the best fit for answer:
    (A) Bandwidth alternatives
    (B) Switching alternating
    (C) Inter organizational networks
    (D) Extranets

11. Sending a file from your personal computer's primary memory or disk to another computer is called
    (A) Uploading
    (B) Downloading
    (C) Logging on
    (D) Hang on

12. Demodulation is the process of
    (A) Converting digital signals to analog signals
    (B) Converting analog signals to digital signals
    (C) Combining many low speed channels into one high speed channel
    (D) Dividing the high-speed signals into frequency bands

13. A WATS arrangement
    (A) Is always less expensive than flat-rate service
    (B) Is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
    (C) Is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
    (D) Is never less expensive than flat-rate service

14. Four routers have to be interconnected in a point-to-point Network. Each pair of root us may connected by a high-speed line, a medium speed line or a low speed line. Find the total number of topologies.
    (A) 12
    (B) 81
    (C) 48
    (D) 729

15. A communications device that combines transmissions from several 1/ O devices into one line is a:
    (A) Concentrator
    (B) Modifier
    (C) Multiplexer
    (D) Full-duplex line

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