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  • Question
  • The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:1. The maximum achievable data rate on this line whose spectrum ranges from 300 Hz to 4300 Hz is


  • Options
  • A. 6200 bps
  • B. 9600 bps
  • C. 34000 bps
  • D. 31000 bps
  • E. None of the above

  • Correct Answer
  • 31000 bps 


  • Networking problems


    Search Results


    • 1. Because the configuration infor-mation for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings?

    • Options
    • A. PING
    • B. TRACERT
    • C. ARP
    • D. IPCONFIG
    • E. None of the above
    • Discuss
    • 2. Which of the following statement is correct?

    • Options
    • A. Buffering is the process of temporarily storing the data to allow for small variation in device speeds
    • B. Buffering is a method to reduce cross-talks
    • C. Buffering is a method to reduce the routing overhead
    • D. Buffering is storage of data within the transmitting medium until the receiver is ready to receive
    • E. None of the above
    • Discuss
    • 3. The first step in troubleshooting many problems is to verify which of the following?

    • Options
    • A. The subnet mask is valid
    • B. TCP/IP is installed correctly on the client
    • C. The WINS server is running
    • D. The BDC is operable
    • E. None of the above
    • Discuss
    • 4. You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and 192.168.7.0. What subnet mask can you use to combine these addresses into one?

    • Options
    • A. 255.255.252.0
    • B. 225.255.254.0
    • C. 255.255.255.240
    • D. 255.255.255.252
    • Discuss
    • 5. HOSTS file entries are limited to how many characters?

    • Options
    • A. 8
    • B. 255
    • C. 500
    • D. Unlimited
    • E. None of the above
    • Discuss
    • 6. Establishing a virtual connection is functionally equivalent to

    • Options
    • A. Connecting as virtual memory
    • B. Physically connecting a DTE and DCE
    • C. Placing a telephone call prior to a conversation
    • D. Placing a modem prior to a conversation
    • E. None of the above
    • Discuss
    • 7. HDLC (High-level Data Link Control) is

    • Options
    • A. a method of determining which device has access to the transmission medium at any time
    • B. a method access control technique for multiple-access transmission media
    • C. a very common bit-oriented data link protocol issued by ISO.
    • D. network access standard for connecting stations to a circuit-switched network
    • E. None of the above
    • Discuss
    • 8. Which of the following technique is used for Time-To-Line (TTL)?

    • Options
    • A. a technique used in best-effort delivery system to avoid endlessly looping packets.
    • B. a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
    • C. One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size.
    • D. All of the above
    • E. None of the above
    • Discuss
    • 9. Distributed Queue Dual Bus is a standard for

    • Options
    • A. LAN
    • B. MAN
    • C. WAN
    • D. Wireless LAN.
    • E. LAN and MAN
    • Discuss
    • 10. The dialogue techniques for terminal use do not include

    • Options
    • A. questions and answers
    • B. open-ended questions
    • C. form fillings
    • D. menu display
    • E. None of the above
    • Discuss


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