Discussion
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- Question
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
Options- A. Interface
- B. Modem
- C. Attenuation
- D. Teleprocessor
- E. None of the above
- Correct Answer
- Modem
- 1. What command is used to compare the files?
Options- A. ccp
- B. du
- C. cmp
- D. comp
- E. None of the above Discuss
- 2. What type of FRU is a SCSI host adapter?
Options- A. CPU
- B. I/O card
- C. video card
- D. hard drive
- E. None of the above Discuss
- 3. The "big picture" diagram of a system is the
Options- A. block diagram
- B. logic diagram
- C. system flowchart
- D. program flowchart
- E. None of the above Discuss
- 4. Binary-Coded-decimal (BCD) numbers express each digit as a _____
Options- A. byte
- B. nibble
- C. bit
- D. All of the above
- E. None of the above Discuss
- 5. What logic function is obtained by adding an inverter to the inputs of an AND gate?
Options- A. OR
- B. NAND
- C. XOR
- D. NOR
- E. None of the above Discuss
- 6. Before sending data, a modem sends a request to send signal, or RTS.
Options- A. True
- B. False Discuss
- 7. When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.
Options- A. True
- B. False Discuss
- 8. A common way to take x, y coordinates off a drawing is to use a
Options- A. light pen
- B. digitiser
- C. Direct view storage tube (DVST)
- D. Tablet
- E. None of the above Discuss
- 9. On a class B network, how many hosts are available at each site with a subnet mask of 248?
Options- A. 16,382
- B. 8,190
- C. 4,094
- D. 2,046
- E. 1,022 Discuss
- 10. A turnkey package includes
Options- A. software
- B. hardware
- C. training
- D. All of the above
- E. None of the above Discuss
More questions
Correct Answer: cmp
Correct Answer: I/O card
Correct Answer: system flowchart
Correct Answer: nibble
Correct Answer: NOR
Correct Answer: True
Correct Answer: False
Correct Answer: digitiser
Correct Answer: 2,046
Correct Answer: All of the above
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