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NEW QUESTION 17
Which files are the source of the information in the following output? (Choose two.) uid=1000 (bob) gid=1000 (bob) groups=1000 (bob), 10 (wheel), 150 (docker), 1001 (libvirt) (wireshark), 989
- A. /etc/passwd
- B. /home/index
- C. /etc/group
- D. /var/db/users
- E. /etc/id
Answer: A,C
NEW QUESTION 18
What is the UID of the user root?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 19
A directory contains the following files:
What would be the output of the followingshell script?
for file in *.txt
- A. a b
- B. *.txt
- C. c.cav
- D. txt
- E. A. txt
- F. A.txt
Answer: E
NEW QUESTION 20
Reverse DNS assigns hostnames to IP addresses. How is the name of the IP address 198.51.100.165 stored on a DNS server?
- A. In the ARPA record for165.100.51.198.rev.
- B. In the A record for165.100.51.198.ipv4.arpA.
- C. In the RNAME record for198-51-100-165.rev.arpA.
- D. In the PTR record for165.100.51.198.in-addr.arpA.
- E. In the REV record forarpA.in-addr.198.51.100.165.
Answer: D
NEW QUESTION 21
Which of the following commands shows the absolute path to the current working directory?
- A. cd ..
- B. who
- C. cd ~/home
- D. pwd
- E. ls -l
Answer: D
NEW QUESTION 22
Running the commandrm Downloadsleads to the following error:
rm: cannot remove 'Downloads/': Is a directory
Which of the following commands can be used instead toremoveDownloads, assumingDownloadsis empty? (Choose two correct answers.)
- A. rem Downloads
- B. dir -r Downloads
- C. rmdir Downloads
- D. undir Downloads
- E. rm -r Downloads
Answer: C,E
NEW QUESTION 23
FILL BLANK
What keyword is used in a shell script to begin a loop? (Specify one keyword only, without any additional information.)
Answer:
Explanation:
for
NEW QUESTION 24
Which of the following is a protocol used for automatic IP address configuration?
- A. DNS
- B. NFS
- C. SMTP
- D. LDAP
- E. DHCP
Answer: E
NEW QUESTION 25
What is the UID of the user root?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
NEW QUESTION 26
Which of the following commands are used to get information on the proper use of ls? (Choose two.)
- A. usage ls
- B. manual ls
- C. man ls
- D. info ls
- E. option ls
Answer: C,D
NEW QUESTION 27
What is true about the dmesgcommand? (Choose two.)
- A. It sends messages to the command lines of all current user sessions.
- B. It might not display older information because it was overwritten by newer information.
- C. It displays the content of the Linux kernel's ring buffer.
- D. It traces the execution of a command and shows each step the program carries out.
- E. It immediately outputs all new messages written to the system journal.
Answer: B,C
NEW QUESTION 28
What are the differences between hard disk drives and solid state disks? (Choose two correct answers.)
- A. Hard disks can fail due to physical damage, while solid state disks cannot fail.
- B. Solid state disks provide faster access to stored data than hard disks.
- C. /dev/sdais a hard disk device while /dev/ssdais a solid state disk.
- D. Solid state disks can store many times as much data as hard disk drives.
- E. Hard disks have a motor and moving parts, solid state disks do not.
Answer: B,E
NEW QUESTION 29
Running the command rm Downloadsleads to the following error:
rm: cannot remove 'Downloads/': Is a directory
Which of the following commands can be used instead to remove Downloads, assuming Downloadsis empty? (Choose two.)
- A. rem Downloads
- B. dir -r Downloads
- C. rmdir Downloads
- D. undir Downloads
- E. rm -r Downloads
Answer: C,E
NEW QUESTION 30
What information is stored in /etc/passwd? (Choose three.)
- A. The user\s default shell
- B. The username
- C. The encrypted password
- D. The numerical user ID
- E. The user's storage space limit
Answer: A,B,D
NEW QUESTION 31
Where is the operating system of a Raspberry Pi stored?
- A. On the master device attached to the Raspberry Pi's IDE bus.
- B. On a removable SD cardwhich is put into the Raspberry Pi.
- C. On a read only partition on the Raspberry Pi's firmware, next to the BIOS.
- D. On rewritable flash storage which is built into the Raspberry Pi.
- E. On a Linux extension module connected to the Raspberry Pi's GPIO pins.
Answer: B
NEW QUESTION 32
The file script.sh in the current directory contains the following content:
#!/bin/bash echo $MYVAR
The following commands are used to execute this script:
MYVAR=value
./script.sh
The result is an empty line instead of the content of the variable MYVAR. How should MYVAR be set in order to make script.sh display the content of MYVAR?
- A. MYVAR=value
- B. env MYVAR=value
- C. !MYVAR=value
- D. export MYVAR=value
- E. $MYVAR=value
Answer: D
NEW QUESTION 33
What is defined by a Free Softwarelicense?
- A. The programming languages which may be used to extend the licensed program.
- B. Limits on the purposes for which the licensed software may be used.
- C. Details of the technical documentation each contributor has to provide.
- D. A complete list of libraries required to compile the licensed software.
- E. Conditions for modifying and distributing the licensed software.
Answer: E
NEW QUESTION 34
Which of the following examples shows the general structure of a forloop in a shell script?
for *.txt as file => echo $file
- A. for file in *.txt
- B. echo $i
} - C. foreach @{file} {
- D. for *.txt ( echo $i )
- E. do
echo $i
done
for ls *.txt exec {} \;
Answer: E
NEW QUESTION 35
What command displays manual pages? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
man
NEW QUESTION 36
Which of the following are typical services offered by public cloud providers? (Choose three.)
- A. Infrastructure as a Service(IaaS)
- B. Software as a Service (SaaS)
- C. Platform as a Service(PaaS)
- D. Internet as a Service(IaaS)
- E. Graphics as a Service (GaaS)
Answer: A,B,C
Explanation:
Explanation/Reference:
NEW QUESTION 37
The ownership of the file doku.odt should be changed. The new owner is named tux. Which command accomplishes this change?
- A. transfer tux: doku.odt
- B. chown tux doku.odt
- C. newuser doku.odt tux
- D. chmod u=tux doku.odt
- E. passwd doku.odt:tux
Answer: B
NEW QUESTION 38
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