102-500 exam questions for practice in 2021 Updated 195 Questions
Updated Nov-2021 Premium 102-500 Exam Engine pdf - Download Free Updated 195 Questions
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NEW QUESTION 42
Which of the following options in the chrony configuration file define remote time sources? (Choose two.)
- A. server
- B. source
- C. pool
- D. clock
- E. remote
Answer: A,C
NEW QUESTION 43
Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)
Answer:
Explanation:
https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s4/etc/hosts.allow
NEW QUESTION 44
Which of the following statements is true if the UID of a regular user is identical to the GID of a group?
- A. UIDs and GIDs are independent of each other, therefore the user as well as the group are still available.
- B. UID have precedence over GIDs, therefore the user is available while the group doesn't.
- C. GIDs have precedence over UIDs, therefore the group is available while the user isn't.
- D. The user is the only member of the group, even if the group configuration contains other members.
- E. The user as well as the group are not available to avoid ambiguity due to the ID conflict.
Answer: A
NEW QUESTION 45
Which configuration file would be edited to change default options for the OpenSSH server?
- A. /etc/ssh/ssh
- B. /etc/ssh/ssh_config
- C. /etc/ssh/server
- D. /etc/ssh/ssh_server
- E. /etc/ssh/sshd_config
Answer: E
NEW QUESTION 46
FILL BLANK
What command enables a network interface according to distribution-specific configuration, such as /etc/ network/interfaces or /etc/sysconfig/network-scripts/ifcfg-eth0? (Specify only the command without any path or parameters.)
Answer:
Explanation:
up
NEW QUESTION 47
Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)
- A. The list of users that belong to the group.
- B. The password of the group.
- C. The home directory of the group.
- D. The name of the group.
- E. The description of the group.
Answer: A,B,D
NEW QUESTION 48
Which of the following commands will delete the default gateway from the system's IP routing table? (Choose two.)
- A. sysctl ipv4.default_gw=0
- B. ifconfig unset default
- C. ip route del default
- D. netstat -r default
- E. route del default
Answer: C,E
NEW QUESTION 49
Why is the xhost program considered dangerous to use?
- A. It makes it difficult to uniquely identify a computer on the network.
- B. It is a graphical DNS tool with known exploits.
- C. It makes your computer share network resources without any authentication.
- D. It allows easy access to your X server by other users.
- E. It logs sensitive information to syslog.
Answer: D
NEW QUESTION 50
What output will the following command sequence produce?
echo '1 2 3 4 5 6' | while read a b c; do
echo result: $c $b $a;
done
- A. result: 1 2 3 4 5 6
- B. result: 3 2 1
- C. result: 6 5 4 3 2 1
- D. result: 3 4 5 6 2 1
- E. result: 6 5 4
Answer: D
NEW QUESTION 51
What output will the command seq 10 produce?
- A. The numbers 1 through 10 with one number per line.
- B. The numbers 0 through 9 with one number per line.
- C. A continuous stream of numbers increasing in increments of 10 until stopped.
- D. The number 10 to standard output.
Answer: A
NEW QUESTION 52
Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)
- A. substitute
- B. lookup
- C. method
- D. nameserver
- E. search
Answer: D,E
NEW QUESTION 53
How does the ping command work by default?
- A. Is sends an ICMP Echo Request to a remote host and waits to receive an ICMP Echo Response in return.
- B. It sends a TCP SYN packet to a remote host and waits to receive an TCP ACK response in return.
- C. Is sends a broadcast packet to all hosts on the net and waits to receive, among others, a response from the target system.
- D. It sends an ARP request to a remote host and waits to receive an ARP response in return.
- E. It sends a UDP packet to port 0 of the remote host and waits to receive a UDP error response in return.
Answer: A
NEW QUESTION 54
Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?
- A. CASE
- B. FROM
- C. WHERE
- D. IF
Answer: C
NEW QUESTION 55
If an alias ls exists, which of the following commands updates the alias to point to the command ls -l instead of the alias's current target?
- A. realias ls='ls -l'
- B. set ls='ls -l'
- C. alias --update ls ls='ls -l'
- D. alias ls='ls -l'
- E. alias --force ls='ls -l'
Answer: D
NEW QUESTION 56
Why is the correct configuration of a system's time zone important?
- A. Because NTP chooses servers nearby based on the configured time zone.
- B. Because the environment variables LANG and LC_MESSAGES are, by default, set according to the time zone.
- C. Because the time zone is saved as part of the modification times of files and cannot be changed after a file is created.
- D. Because the conversion of Unix timestamps to local time relies on the time zone configuration.
Answer: D
NEW QUESTION 57
Which of the following can the chage command NOT change?
- A. The number of days of inactivity after a password has expired before the account is locked.
- B. The number of days since January 1, 1970 after which the user's account will no longer be accessible.
- C. The maximum number of days during which a password is valid.
- D. The number of days since January 1, 1970 since the password was last changed.
- E. The number of days since January 1, 1970 after which the password can change.
Answer: E
NEW QUESTION 58
Which directory in /etc is used to keep a sample copy of files and directories for when a new user has a home directory created? (Please provide the full path)
Answer:
Explanation:
/etc/skel, /etc/skel/
NEW QUESTION 59
Which of the following fields can be found in the /etc/group file? (Choose two.)
- A. The list of users that belong to the group.
- B. The home directory of the group.
- C. The name of the group.
- D. The default group ACL.
- E. The description of the group.
Answer: A,C
NEW QUESTION 60
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