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- Question
Which of the following commands is used to assign executable permission to the owner of the file named "note"?
Options- A. chmod g+x note
- B. chmod u+w note
- C. chmod u+x note
- D. chmod ugo+x note
- E. None of the above
- Correct Answer
- chmod u+x note
ExplanationUsers selection:
u - user: the owner of the file.
g - group: users who are members of the file's group.
o - others: users who are not the owner of the file or members of the group.
a - all: all three of the above, is the same as ugo.
Permissions:
r - read
w - write
x - execute
So, u+x => Execute (x) permission to Owner (u). - 1. When purchase cost is $20, maintenance cost is $0.50, and annual sale are 20 units, EOQ is
Options- A. 20
- B. 40
- C. 80
- D. 160
- E. None of the above Discuss
- 2. An indexed file offers the facility of a Random file and the access method of a
Options- A. Sequential file
- B. indexed file
- C. direct access file
- D. random access file
- E. None of the above Discuss
- 3. Several objectives are required to achieve a successful data base management program. These are availability of data, quality of data, and
Options- A. compatibility of data
- B. transmission of data
- C. desirability of data
- D. up-to-date data
- E. None of the above Discuss
- 4. In which way is a managerial information system (MIS) superior to electronic data processing (EDP)?
Options- A. It is batch oriented
- B. It is most cost effective
- C. It provides summary reports without details
- D. All of the above
- E. None of the above Discuss
- 5. Which one of the following statements is true for voltage in a parallel circuit?
Options- A. The total voltage in a parallel circuit is equal to the average value of the individual voltages
- B. The total voltage in a parallel circuit is always less than the value of the smallest voltage
- C. The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit
- D. The total voltage of a parallel circuit is the same as the voltages across each branch
- E. None of the above Discuss
- 6. Part of a program where the shared memory is accessed and which should be executed invisibly, is called
Options- A. semaphores
- B. directory
- C. critical section
- D. mutual exclusion
- E. None of the above Discuss
- 7. The processes at the most detailed level of the data flow diagrams are called
Options- A. transform descriptions
- B. functional primitives
- C. data flows
- D. interfaces
- E. None of the above Discuss
- 8. A skills search requires that the employee file be accessible by
Options- A. employee position
- B. applicant file
- C. employee skill category
- D. employee name
- E. None of the above Discuss
- 9. The location for subdirectories for local programs and executables for user and administrative commands, is:
Options- A. /usr
- B. /tmp
- C. /opt
- D. /mnt
- E. None of the above Discuss
- 10. The binary system uses powers of
Options- A. 2
- B. 10
- C. 8
- D. 16
- E. None of the above Discuss
More questions
Correct Answer: 40
Correct Answer: Sequential file
Correct Answer: up-to-date data
Correct Answer: It provides summary reports without details
Correct Answer: The total voltage of a parallel circuit is the same as the voltages across each branch
Correct Answer: critical section
Correct Answer: functional primitives
Correct Answer: employee skill category
Correct Answer: /usr
Correct Answer: 2
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