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- Question
For how many processes which are sharing common data, the Dekker's algorithm implements mutual exclusion?
Options- A. 1
- B. 2
- C. 3
- D. 4
- E. None of the above
- Correct Answer
- 2
ExplanationDekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra in his manuscript on cooperating sequential processes. It allows two threads to share a single-use resource without conflict, using only shared memory for communication.It avoids the strict alternation of a naive turn-taking algorithm, and was one of the first mutual exclusion algorithms to be invented.
Source: http://en.wikipedia.org/wiki/Dekker's_algorithm
More questions
- 1. There are several careers within data processing operations, including data-entry operator.
Options- A. Computer operator
- B. Programmer
- C. System Analyst
- D. Key-punch operator
- E. None of the above Discuss
Correct Answer: Computer operator
- 2. Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?
Options- A. 10
- B. 12
- C. 120
- D. 1200
- E. None of the above Discuss
Correct Answer: 120
- 3. In SQL, the command(s) is(are) used to create an index for a table or cluster
Options- A. CREATE INDEX
- B. MODIFY INDEX
- C. SET INDEX TO FILE
- D. All of the above
- E. None of the above Discuss
Correct Answer: CREATE INDEX
- 4. 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
Correct Answer: IPCONFIG
- 5. IRQ6 is typically reserved for:
Options- A. The floppy
- B. The keyboard controller
- C. LPT2
- D. The modem
- E. None of the above Discuss
Correct Answer: The floppy
- 6. Which utility is an all-purpose tool for troubleshooting TCP/IP problems?
Options- A. NBTSTAT
- B. Netstat
- C. PING
- D. Hostname
- E. None of the above Discuss
Correct Answer: PING
- 7. In 1985, the famous chess player David Levy beat a world champion chess program in four straight games by using orthodox moves that confused the program. What was the name of the chess program?
Options- A. Kaissa
- B. CRAY BLITZ
- C. Golf
- D. DIGDUG
- E. None of the above Discuss
Correct Answer: CRAY BLITZ
- 8. A proposed network infrastructure of interconnected local, regional, and global networks that would support universal interactive multimedia communications. Select the best fit for answer:
Options- A. Internetworked enterprise
- B. Information super highway
- C. Business applications of telecommunications
- D. Client/Server networks Discuss
Correct Answer: Information super highway
- 9. The difference between CAD and CAM is that CAD software is directed at product design while CAM software is:
Options- A. concerned with production and control of tool design
- B. concerned with management programs
- C. designed for communications
- D. specifically for PC-board design
- E. None of the above Discuss
Correct Answer: concerned with production and control of tool design
- 10. Which technique is being investigated as an approach to automatic programming?
Options- A. generative CAI
- B. specification by example
- C. All of the above
- D. non-hierarchical planning
- E. None of the above Discuss
Correct Answer: specification by example
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