Computer Science with Networking Test - Set 25 - ObjectiveBooks

Computer Science with Networking Test - Set 25

Practice Test: Question Set - 25

1. The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband.
    (A) Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel
    (B) Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
    (C) Baseband refers to local area networks, and broadband refers to wide area networks
    (D) Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed

2. ARP (Address Resolution Protocol) is
    (A) A TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
    (B) A TCP/IP high level protocol for transferring files from one machine to another
    (C) A protocol used to monitor computers
    (D) A protocol that handles error and control messages

3. Bus is
    (A) One or more conductors that some as a common connection for a related group of devices
    (B) A continuous frequency capable of being modulated or impressed with a second signal
    (C) The condition when two or more stations attempt to use the same channel at the same time
    (D) A collection of interconnected functional units that provides a data communications service among stations attached to the network

4. What is the name of the software package that allows people to send electronic mail along a network of computers and workstations?
    (A) Memory resident package
    (B) Project management package
    (C) Data communication package
    (D) Electronic mail package

5. A communication network which is used by large organizations over regional, national or global area is called
    (A) LAN
    (B) WAN
    (C) MAN
    (D) Intranet

6. Videotex is a combination of
    (A) Television
    (B) Communication
    (C) Computer technology
    (D) All of the above

7. 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?
    (A) 8000 B frame
    (B) 80,000 B frame
    (C) 8 × 105 bit frame
    (D) 10,000 B frame

8. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?
    (A) 32 kbps
    (B) 8 kbps
    (C) 128 kbps
    (D) 64 kbps

9. If odd parity is used for ASCII error detection, the number of 0s per eight-bit symbol is _______.
    (A) Even
    (B) Odd
    (C) Indeterminate
    (D) 42

10. FDDI is a
    (A) Ring network
    (B) Star network
    (C) Mesh network
    (D) Bus based network

11. A global network of millions of business, government, educational, and research networks; computer systems; database; and end users. Select the best fit for answer:
    (A) Internet works
    (B) The Internet
    (C) Internet revolution
    (D) Internet technologies

12. Error detecting code is
    (A) An error-detecting code based on a summation operation performed on the bits to be checked
    (B) A check bit appended to an array of binary digits to make the sum of all the binary digits
    (C) A code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected
    (D) The ratio of the data units in error to the total number of data units

13. You are working with a network that has the network ID What subnet should you use that supports up to 25 hosts and a maximum number of subnets?

14. An information utility can offer a user
    (A) Instant bonds and stock quotations
    (B) News stories from wire services
    (C) Complete airline schedules for all domestic flights
    (D) All of the above

15. The communication mode that supports data in both directions at the same time is
    (A) Simplex
    (B) Half-duplex
    (C) Full-duplex
    (D) Multiplex

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