Computer Science Networking and Internet Architecture - Set 18 - ObjectiveBooks

Computer Science Networking and Internet Architecture - Set 18

Practice Test: Question Set - 18


1. In a synchronous modem, the digital-to-analog converter transmits signal to the
    (A) Equalizer 
    (B) Modulator
    (C) Demodulator
    (D) Terminal

2. Which of the following is required to communicate between two computers?
    (A) Communications software
    (B) Protocol
    (C) Communications hardware
    (D) All of the above

3. The modern enterprise is interconnected internally and externally by the Internet, intranets, and other networks. Select the best fit for answer:
    (A) Internetworked enterprise
    (B) Information super highway
    (C) Business applications of telecommunications
    (D) Client/Server networks

4. Which of the following transmission systems provides the highest data rate to an individual device
    (A) Computer bus
    (B) Telephone lines
    (C) Voice band modem
    (D) Leased lines

5. 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. Which subnet mask should you assign?
    (A) 255.240.0.0
    (B) 255.248.0.0
    (C) 255.252.0.0
    (D) 255.254.0.0

6. A network that requires human intervention of route signals is called a
    (A) Bus network
    (B) Ring network
    (C) Star network
    (D) T-switched network

7. Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?
    (A) One bit or any odd number of bits inverted in a block of data during transmission
    (B) Two bits or any even number of bits inverted in a block during transmission
    (C) One bit or any odd number of bits inverted in a byte during transmission
    (D) Two bits or any even number of bits inverted in a byte during transmission

8. The synchronous modems are more costly than the asynchronous modems because
    (A) They produce large volume of data
    (B) They contain clock recovery circuits
    (C) They transmit the data with stop and start bits
    (D) They operate with a larger bandwidth

9. Which of the following device copies electrical signals from one Ethernet to another?
    (A) Bridge
    (B) Repeater
    (C) Hub
    (D) Passive hub

10. Which of the following connectivity devices is used to extend a network on a purely mechanical basis?
    (A) Gateway 
    (B) Switch
    (C) Router
    (D) Active hub

11. Carrier is
    (A) One or more conductors that serve 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 sections 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

12. MAC is
    (A) A method of determining which device has access to the transmission medium at any time
    (B) A method access control technique or multiple-access transmission media
    (C) A very common bit-oriented data link protocol issued to ISO
    (D) Network access standard for connecting stations to a circuit-switched network

13. Most networks are connected to other local area or wide area networks. Select the best fit for answer:
    (A) Internet works
    (B) The Internet
    (C) Internet revolution
    (D) Internet technologies

14. How many hosts are attached to each of the local area networks at your site?
    (A) 128
    (B) 254
    (C) 256
    (D) 64

15. Which of the following specifies the network address and host address of the computer?
    (A) The IP address
    (B) The TCP address
    (C) The subnet mask
    (D) The default gateway

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