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- Question
Error detection at the data link level is achieved by?
Options- A. Bit stuffing
- B. Hamming codes
- C. Cyclic Redundancy codes
- D. Equalization
- E. None of the above
- Correct Answer
- Cyclic Redundancy codes
- 1. To prevent toner from sticking to a laser printer's heat rollers, apply which of the following:
Options- A. Alcohol
- B. Oil
- C. Ammonia
- D. Beer or Jack Daniels
- E. None of the above Discuss
- 2. There are certain packages that allow people to define data items, place these items in particular records, combine the records into designated files and then manipulate and retrieve the stored data. What are they called?
Options- A. Data storage system
- B. Database management system (DBMS)
- C. Batch processing system
- D. Data communication package
- E. None of the above Discuss
- 3. The packets switching concept was first proposed
Options- A. in the late 1980s for the Defense Ministry of US.
- B. in the early 1960s for military communication systems, mainly to handle speech
- C. in the late 1950s for Defense Ministry of US
- D. All of the above
- E. None of the above Discuss
- 4. In LISP, the function evaluates <object> and assigns this value to the unevaluated <sconst>.
Options- A. (constant <sconst> <object>)
- B. (defconstant <sconst> <object>)
- C. (eva <sconst> <object>)
- D. (eva <object> <sconst>)
- E. None of the above Discuss
- 5. What is the name given to the process of initializing a microcomputer with its operating system?
Options- A. Cold booting
- B. Booting
- C. Warm booting
- D. Boot recording
- E. None of the above Discuss
- 6. Why does a high number of broadcast messages adversely affect overall network performance?
Options- A. Each broadcast message requires an acknowledgement packet from every computer on the network
- B. No computer on the network can transmit data until each broadcast message has been acknowledged by every computer on the network
- C. Broadcast messages are automatically routed to every segment of a LAN
- D. Every computer on the network must process each broadcast message
- E. None of the above Discuss
- 7. The parts of a system may be analyzed in the sequence
Options- A. outputs, objective, management, information processor, input, transformation
- B. objectives, outputs, management, information processor, input, transformation
- C. objectives, outputs, information processor, management, input transformation
- D. outputs, inputs, objectives, management, information processor, transformation
- E. None of the above Discuss
- 8. Which two of the following DOS commands are used to display or set the date and time of your computer's infernal clock?
Options- A. VER
- B. HOUR
- C. DATE
- D. DAY
- E. None of the above Discuss
- 9. The post installation audit seeks to assure that
Options- A. managers information needs are being met
- B. the system is accurate and secure
- C. both (a) and (b)
- D. neither (a) nor (b)
- E. None of the above Discuss
- 10. The number of free electrons and holes in intrinsic semiconductor increases when the temperature
Options- A. Decreases
- B. Increases
- C. Stays the same
- D. 0oC
- E. None of the above Discuss
More questions
Correct Answer: Oil
Correct Answer: Database management system (DBMS)
Correct Answer: in the early 1960s for military communication systems, mainly to handle speech
Correct Answer: (defconstant <sconst> <object>)
Correct Answer: Booting
Correct Answer: Every computer on the network must process each broadcast message
Correct Answer: objectives, outputs, management, information processor, input, transformation
Correct Answer: DATE
Correct Answer: both (a) and (b)
Correct Answer: Increases
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