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  • Question
  • How many class A, B, and C network IDs can exist?


  • Options
  • A. 2,113,658
  • B. 16,382
  • C. 126
  • D. 128
  • E. None of the above

  • Correct Answer
  • 2,113,658 


  • Networking problems


    Search Results


    • 1. What is the first octet range for a class C IP address?

    • Options
    • A. 192 - 255
    • B. 192 - 223
    • C. 192 - 226
    • D. 128 - 191
    • E. 1 - 126
    • Discuss
    • 2. Bandlimited signal is

    • Options
    • A. transmission of signals without modulation
    • B. a signal all of whose energy is contained within a finite frequency range
    • C. simultaneous transmission of data to a number of stations
    • D. All of the above
    • E. None of the above
    • Discuss
    • 3. Which utility is useful for finding the local host name?

    • Options
    • A. NBTSTAT
    • B. Netstat
    • C. PING
    • D. Hostname
    • E. None of the above
    • Discuss
    • 4. Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

    • Options
    • A. Paperless office
    • B. Electronic mail
    • C. Global network
    • D. Electronic newspaper
    • E. None of the above
    • Discuss
    • 5. Which of the following divides the high speed signal into frequency bands?

    • Options
    • A. t-switch
    • B. modem
    • C. frequency-division multiplexer
    • D. time-division multiplexer
    • E. None of the above
    • Discuss
    • 6. A required characteristic of an online real-time system is:

    • Options
    • A. more than one CPU
    • B. offline batch processing
    • C. no delay in processing
    • D. All of the above
    • E. None of the above
    • Discuss
    • 7. TCP is:

    • Options
    • A. Operates at the Data Link layer
    • B. Connection orientated and unreliable
    • C. Connection orientated and reliable
    • D. Connectionless and unreliable
    • Discuss
    • 8. Modem is used in data transmission. When was it invented and in which country?

    • Options
    • A. 1963, USA
    • B. 1965, Germany
    • C. 1950, USA
    • D. 1950, Japan
    • E. None of the above
    • Discuss
    • 9. An encyclopedic database

    • Options
    • A. is an information utility that specializes in storing and searching information
    • B. is generally free
    • C. is easy for beginners to use
    • D. All of the above
    • E. None of the above
    • Discuss
    • 10. Which of the following characteristic(s) is/are suited to the PSS applications?

    • Options
    • A. bursty traffic and low communications intensity
    • B. widely dispersed terminals and access to international packets switched services
    • C. Multiple remote host or applications accessed by a single local access circuit terminal and circuit
    • D. All of the above
    • E. None of the above
    • Discuss


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