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  • Question
  • Four bits are used for packet sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?


  • Options
  • A. 4
  • B. 8
  • C. 15
  • D. 16
  • E. None of the above

  • Correct Answer
  • 15 


  • Networking problems


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    • 1. Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively?

    • Options
    • A. SMTP
    • B. DHCP
    • C. IMAP
    • D. POP3
    • Discuss
    • 2. You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 12 hosts and a maximum number of subnets?

    • Options
    • A. 255.255.255.192
    • B. 255.255.255.224
    • C. 255.255.255. 240
    • D. 255.255.255.248
    • E. 255.255.255.252
    • Discuss
    • 3. Which of the following statement is correct?

    • Options
    • A. Satellite transponders contain a receiver and transmitter designed to relay microwave transmissions from one point on earth to another.
    • B. Satellite transponders contain a device that echos the radiation without change from one point on earth to another.
    • C. Satellite transponder contains devices that transform the message sent from one location on earth to a different code for transmission to another location.
    • D. Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations
    • E. None of the above
    • Discuss
    • 4. How can you see the address of the DHCP server from which a client received its IP address?

    • Options
    • A. By using Advanced Properties of TCP/IP
    • B. By using IPCONFIG/ALL
    • C. By using DHCPINFO
    • D. By pinging DHCP
    • E. None of the above
    • Discuss
    • 5. Which of the following statements is incorrect?

    • Options
    • A. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line.
    • B. HDLC is a standard synchronous communication protocol.
    • C. RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCE indicates that it is ready to accept data.
    • D. RTS/CTS is the way the terminal indicates ringing
    • E. None of the above
    • Discuss
    • 6. When using the loopback address, if TCP/IP is installed correctly, when should you receive a response?

    • Options
    • A. Immediately
    • B. Only if the address fails
    • C. After the next host comes online
    • D. Within two minutes
    • E. None of the above
    • Discuss
    • 7. Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

    • Options
    • A. P I (K + 1)
    • B. KIK (1 + F)
    • C. 1/ (1 - F)
    • D. K I (K - P)
    • E. None of the above
    • Discuss
    • 8. Which IP address class has few hosts per network?

    • Options
    • A. D
    • B. C
    • C. B
    • D. A
    • E. None of the above
    • Discuss
    • 9. For connecting modem, a computer must be equipped with a port that conforms to the RS-232 standard of the Electronic Industries Association of America. What do the letters 'RS' stand for?

    • Options
    • A. Recognised standard
    • B. Random sequence
    • C. Recommended standard
    • D. Registered source
    • E. None of the above
    • Discuss
    • 10. In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and

    • Options
    • A. PC
    • B. synchronous port
    • C. crossover cable
    • D. asynchronous port
    • E. None of the above
    • Discuss


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