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QUESTION NO:38

smith is trying to send a message to the local user bob using the write command and he receives

an error as shown below:

[smith@station2 ~]$write bob

Write: bob has messages disabled

[smith@station2 ~]$

What could be done to overcome the error?

A. bob should set the logged in terminal to the tty group.

B. bob should enable talk and ntalk on his system.

C. bob should accept messages using the mesg y command.

D. smith should indicate the terminal on which bob is logged in.

Answer: C

Explanation:

QUESTION NO:41

Match the following file redirection operators with their functions:

1) < a) redirects STDOUT to a file (overwrite)

2) > b) redirects STDIN from a file

3) >> c) redirects both STDOUT and STDERR

4) 2> d) redirects STDOUT to a file (append)

5) 2>> e) redirects STDERR to a file (overwrite)

6) and> f) redirects STDERR to a file (append)

7) 2>and1 g) redirects both STDOUT and STDERR

A. 1-b, 2-a, 3-d, 4-e, 5-f, 6-c, 7-g

B. 1-b, 2-e, 3-f, 4-a, 5-d, 6-g, 7-c

C. 1-c, 2-e, 3-f, 4-a, 5-d, 6-b, 7-g

D. 1-c, 2-a, 3-d, 4-f, 5-e, 6-g, 7-b

E. 1-b, 2-a, 3-d, 4-f, 5-e, 6-c, 7-g

F. 1-b, 2-e, 3-d, 4-a, 5-f, 6-c, 7-g

Answer: A

Explanation:

QUESTION NO:20

Match the following signal values with their description.

1. 9 a. Hangup

2 . 19 b. Terminate the process and dump core

3. 11 c. Kill signal

4. 1 d. Stop the process

A. 1-c, 2-b, 3-a,4-b

B. 1-c, 2-d, 3-b, 4-a

C. 1-d, 2-b, 3-c, 4-a

D. 1-d, 2-a, 3-c, 4-b

Answer: B

Explanation:

QUESTION NO:47

View the Exhibit and note the directory hierarchy. How would you delete the /test1 directory

hierarchy? (Choose all that apply.)

A. rm -rf /test1

B. rmdir -r /test1

C. rmdir -p /test1

D. rm -d /test1/hello/fine/documents

E. rm -rf /test1/hello/fine/documents

F. rmdir -p /test1/hello/fine/documents

Answer: A,F

Explanation:

QUESTION NO:70

What are the extra features that the Bourne Again Shell (bash) has compared to the Bourne Shell

(sh)? (Choose all that apply.)

A. background exit status

B. read values from the terminal

C. combine STDOUT and STDERR

D. file name completion and command history

E. allows functions and variables with the same name

F. expansion of positional parameters beyond $9 with ${num}

Answer: D,E,F

Explanation:

QUESTION NO:10

The user smith wants to display the total number of lines that are 4 characters (letters and digits)

long or more from the file1.txt file. Which regular expression or command should smith use?

A. egrep “^[[:alnum:]]{4,}$” file1.txt | wc -l

B. egrep “^[[:alpha:]]{4,}$” file1.txt | wc -l

C. egrep “^[[:alpha:]]{4,}$” file1.txt | wc -w

D. egrep “^[[:alnum:]]{4,}$” file1.txt | wc -c

Answer: A

Explanation:

QUESTION NO:73

View the Exhibit.

As the user bob, you list all the background jobs using the jobs command. You want to bring the

last job stopped into the foreground. Which three commands would you use to achieve this task?

(Choose three.)

A. fg

B. %2

C. %3

D. %1

E. fg 2

F. fg 3

G. fg 1

Answer: A,C,F

Explanation:

QUESTION NO:64

View the Exhibit.

As bob you have logged in at the tty1 terminal and run the commands as shown in the Exhibit.

You want to list the background jobs in the current terminal and issue the jobs command.

Which statement is true in this context?

A. The plus sign indicates the previous job.

B. The plus sign indicates the last stopped job.

C. Only the job with a minus sign can be made to run in the foreground again.

D. Only the job with a plus sign can be made to run in the foreground again.

Answer: B

Explanation:

QUESTION NO:39

User smith on station2 is trying to chat with the remote user bob on station1 using the talk

command. smith receives an error message as shown below:

[smith@station2 ~]$talk [email protected]

[No connection yet]

[ Error on read from talk daemon: Connection refused ]

[smith@station2 ~]$

What can the root user do to resolve the issue? (Choose two.)

A. let smith retry talk by reading from STDIN and sending to bob

B. let smith retry talk after changing the group of talk command to tty

C. let smith retry the talk request with UDP port 518 open on both systems

D. let smith retry talk after restarting the xinetd service with ntalk enabled on both systems

E. let smith retry talk after restarting the network service with the UDP port 517 blocked on both

systems

Answer: C,D

Explanation:

QUESTION NO:75

Match the following Regular Expression Character classes with their class descriptions:

1) [:alnum:] a) match all control characters

2) [:alpha:] b) match all printable characters (not including space)

3) [:graph:] c) match all letters and digits

4) [:print:] d) match all letters

5) [:cntrl:] e) match all printable characters

A. 1-d, 2-c, 3-b, 4-e, 5-a

B. 1-c, 2-d, 3-e, 4-a, 5-b

C. 1-d, 2-c, 3-e, 4-b, 5-a

D. 1-c, 2-d, 3-b, 4-e, 5-a

Answer: D

Explanation:

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