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- Question
In a synchronous modem, the digital-to-analog converter transmits signal to the
Options- A. equalizer
- B. modulator
- C. demodulator
- D. terminal
- E. None of the above
- Correct Answer
- equalizer
- 1. The core diameter of a single-mode fibers is about
Options- A. 10 times the wavelength of the light carried in the fiber
- B. 10 times the fiber radius
- C. 7 times the light carried in the fiber
- D. 3 times the wavelength of the light carried in the fiber
- E. None of the above Discuss
- 2. The data-link layer, in reference to the OSI model, specifies
Options- A. data link procedures that provide for the exchange of data via frames that can be sent and received
- B. the interface between the X.25 network and packet mode device
- C. the virtual circuit interface to packet-switched service
- D. All of the above
- E. None of the above Discuss
- 3. When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
Options- A. 80
- B. 100
- C. 30
- D. 150
- E. None of the above Discuss
- 4. You have been contracted to install a windows NT network in an office that is located in a strip mall. The office is located next to the power plant of the building, so a UPS (uninterruptible power supply) has already been installed. What type of cable should you use for the network cabling? Choose the best answer.
Options- A. TI
- B. UTP
- C. Fiber-optic
- D. PSTN
- E. STP Discuss
- 5. Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as
Options- A. Amplitude-shift keying
- B. Amplitude
- C. Amplitude modulation
- D. Aloha
- E. None of the above Discuss
- 6. We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?
Options- A. Viewdata
- B. Teletext
- C. Telesoftware
- D. Videotex
- E. None of the above Discuss
- 7. You need to determine whether IP information has been assigned to your Windows NT. Which utility should you use?
Options- A. NBTSTAT
- B. NETSTAT
- C. IPCONFIG
- D. WINIPCFG
- E. PING Discuss
- 8. Which of the following device is used with an X.25 network to provide service to asynchronous terminals
Options- A. repeater
- B. bridges
- C. gateway
- D. Packet assembler/disassemble
- E. None of the above Discuss
- 9. Which of the following is an example of bounded medium?
Options- A. Coaxial cable
- B. Wave guide
- C. Fiber optic cable {d) All of the above
- D. None of the above Discuss
- 10. IEEE project 802 divides the data link layer into an upper _____ sublayer and a lower _____ sublayer.
Options- A. HDLC, PDU
- B. PDU, HDLC
- C. MAC, LLC
- D. LLC, MAC
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: 10 times the wavelength of the light carried in the fiber
Correct Answer: data link procedures that provide for the exchange of data via frames that can be sent and received
Correct Answer: 30
Correct Answer: STP
Correct Answer: Amplitude-shift keying
Correct Answer: Videotex
Correct Answer: IPCONFIG
Correct Answer: Packet assembler/disassemble
Correct Answer: None of the above
Correct Answer: LLC, MAC
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