Networking for Computer Science pdf - Set 23 - ObjectiveBooks

Networking for Computer Science pdf - Set 23

Practice Test: Question Set - 23


1. Which address is the loopback address?
    (A) 0.0.0.1
    (B) 127.0.0.0
    (C) 127.0.0.1
    (D) 255.255.255.255

2. Which of the following digits are known as the area code of the Network User Address (NUA)?
    (A) 5-7
    (B) 1-4
    (C) 8-12
    (D) 13-14

3. Which of the following program is used to copy files to or from another UNIX timesharing system over a single link?
    (A) VMTP
    (B) TFTP
    (C) UUCP
    (D) UART

4. Which of the following refers to the terms "residual error rate"?
    (A) The number of bit errors per twenty four hours of continuous operation on an asynchronous line
    (B) The probability that one or more errors will be undetected when an error detection scheme is used
    (C) The probability that one or more errors will be detected when an error detection mechanism is used
    (D) Signal to noise ratio divided by the ratio of energy per bit to noise per hertz

5. The standard suit of protocols used by the Internet, intranets, extranets, and some other networks.
    (A) TCP/IP
    (B) Protocol
    (C) Open Systems
    (D) Internetwork processor

6. What is the name of the network topology in which there are bi-directional links between each possible node?
    (A) Ring
    (B) Star
    (C) Tree
    (D) Mesh

7. Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
    (A) Interface
    (B) Modem
    (C) Attenuation
    (D) None of the above

8. The X.25 standard specifies a
    (A) Technique for start-stop data
    (B) Technique for dial access
    (C) DTE/DCE interface
    (D) Data bit rate

9. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?
    (A) 32 Kbps
    (B) 64 Kbps
    (C) 8 Kbps
    (D) 128 Kbps

10. 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

11. Which of the following TCP/IP protocol is used for file transfer with minimal capability and minimal overhead?
    (A) RARP
    (B) FTP
    (C) TFTP
    (D) TELNET

12. Which of the following services dynamically resolves NetBIOS-to-IP resolution?
    (A) DNS
    (B) DHCP
    (C) WINS
    (D) LMHOSTS

13. Data are sent over pin _______ of the EIA-232 interface.
    (A) 2
    (B) 3
    (C) 4
    (D) All of the above

14. If the ASCII character H is sent and the character I is received, what type of error is this?
    (A) Single-bit
    (B) Multiple-bit
    (C) Burst
    (D) Recoverable

15. Which of the following digits are known as the sub-address digits (for use by the user) of the Network User Address (NUA)?
    (A) 5-7
    (B) 1-4
    (C) 8-12
    (D) 13-14

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