CompTIA SK0-005 Online Practice Questions and Exam Preparation

CompTIA SK0-005 Online Questions & Answers

• Question 171:

  A systems administrator is setting up a server farm for a new company. The company has a public range of IP addresses and uses the addresses internally. Which of the following IP addresses best fits this scenario?

  A. 10.3.7.27
  B. 127.0.0.1
  C. 192.168.7.1
  D. 216.176.128.10
  D. 216.176.128.10

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  Explanation

• Question 172:

  A technician is working on a Linux server. The customer has reported that files in the home directory are missing. The /etc/ f stab file has the following entry:

  nfsserver:/home /home nfs defaults 0 0

  However, a df -h /home command returns the following information:

  /dev/sda2 10G 1G 9G 10% /home

  Which of the following should the technician attempt FIRST to resolve the issue?

  A. mkdir /home
  B. umount nfsserver:/home
  C. rmdir nfsserver:/home/dev/sda2
  D. mount /home
  B. umount nfsserver:/home

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  Explanation

  The /etc/fstab file contains the information about the file systems that are mounted automatically at boot time or on demand. The entry nfsserver:/home /home nfs defaults 0 0 indicates that the /home directory on the local server is mounted from the /home directory on a remote server called nfsserver using the NFS protocol. However, the df -h /home command shows that the /home directory is actually mounted from a local partition /dev/sda2, which may not contain the user's files. This means that the NFS mount failed or was overridden by another mount. To resolve the issue, the technician should attempt to unmount the local partition using umount nfsserver:/home, which will detach the /home directory from / dev/sda2. Then, the technician should try to mount the NFS share again using mount /home, which will attach the /home directory to nfsserver:/home according to the /etc/fstab entry12. Creating a new directory (A) or removing an existing one ?would not help, as they would not affect the mount point. Mounting /home (D) without unmounting it first would not work, as it would result in an error that the mount point is busy3.

  References: https://askubuntu.com/questions/374870/home-directory-not-being-created https://www.techrepublic.com/article/how-to-properly-automount-a-drive-in-ubuntu-linux/ https://serverfault.com/questions/587855/cannot-find-home-directory-on-linux-server

• Question 173:

  Which of the following factors would most likely impact the selection of an organization's cloud provider?

  A. Industry standards
  B. Government regulations
  C. Company policy
  D. Organizational procedures
  B. Government regulations

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  Explanation

  Government regulations often dictate the legal requirements for data storage, privacy, and security, which can greatly impact the selection of a cloud provider. Compliance with regulations like GDPR, HIPAA, or other local laws is critical when

  choosing a cloud provider to avoid legal repercussions.

  Government regulations (Answer B):Cloud providers must comply with legal and regulatory requirements, making this a significant factor in provider selection.

  Industry standards (Option A): While important, standards can be more flexible and are often not legally binding.

  Company policy (Option C): Internal policies are important but usually stem from the need to comply with regulations.

  Organizational procedures (Option D): Procedures help guide operations but don't typically dictate the choice of cloud providers.

  This topic is covered underSK0-005 Objective 1.6: Explain the importance of cloud-based concepts and services.

• Question 174:

  An administrator notices high traffic on a certain subnet and would like to identify the source of the traffic. Which of the following tools should the administrator utilize?

  A. Anti-malware
  B. Nbtstat
  C. Port scanner
  D. Sniffer
  D. Sniffer

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  Explanation

• Question 175:

  Which of the following backup methods can be performed while a server is running, will not interrupt files in use, and can be used to fully restore the server if needed?

  A. Snapshot
  B. Archive
  C. Open file
  D. Differential
  A. Snapshot

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  Explanation

  Asnapshotis a point-in-time image of a system's state that can be created while the system is running, without interrupting operations. Snapshots can be used to restore the entire system to the exact state at the time of the snapshot. They are

  commonly used in virtualized environments and allow administrators to roll back to a previous state if needed. Snapshot (Answer A):Captures the entire system's state and can be taken without downtime.

  Archive (Option B):Refers to long-term storage, not necessarily something that supports live backups.

  Open file (Option C):Refers to a method that handles open files during backup but doesn't provide full system restoration capabilities. Differential (Option D):Backs up only the data changed since the last full backup but still requires a full

  backup for complete system restoration.

  This topic is related toSK0-005 Objective 4.1: Explain backup and recovery methods.

• Question 176:

  A company is building a new datacenter next to a busy parking lot. Which of the following is the BEST strategy to ensure wayward vehicle traffic does not interfere with datacenter operations?

  A. Install security cameras
  B. Utilize security guards
  C. Install bollards
  D. Install a mantrap
  C. Install bollards

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  Explanation

  The best strategy to ensure wayward vehicle traffic does not interfere with datacenter operations is to install bollards. Bollards are sturdy posts that are installed around a perimeter to prevent vehicles from entering or crashing into a protected area. Bollards can provide physical security and deterrence for datacenters that are located near busy roads or parking lots. Bollards can also prevent accidental damage or injury caused by vehicles that lose control or have faulty brakes.

• Question 177:

  A server administrator is installing a new server on a manufacturing floor. Because the server is publicly accessible, security requires the server to undergo hardware hardening. Which of the following actions should the administrator take?

  A. Close unneeded ports.
  B. Disable unused services.
  C. Set a BIOS password.
  D. Apply driver updates.
  C. Set a BIOS password.

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  Explanation

• Question 178:

  A server administrator is implementing an authentication policy that will require users to use a token during login. Which of the following types of authentication is the administrator implementing?

  A. Something you are
  B. Something you know
  C. Something you have
  D. Something you do
  C. Something you have

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  Explanation

  Something you have is one of the types of authentication methods that relies on a physical object or device that the user possesses to verify their identity. A token is an example of something you have, as it is a small device that generates a one-time password or code that the user enters during login. A token can be a hardware device, such as a key fob or a smart card, or a software application, such as an app on asmartphone or a browser extension. A token provides an additional layer of security to the authentication process, as it prevents unauthorized access even if the user's username and password are compromised1.

• Question 179:

  Which of the following backup types only records changes to the data blocks on a virtual machine?

  A. Differential
  B. Snapshot
  C. Incremental
  D. Synthetic full
  C. Incremental

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  Explanation

  https://searchdatabackup.techtarget.com/definition/incremental-backup

• Question 180:

  Which of me following should be placed at the top of a Bash script to ensure it can be executed?

  A. bash
  B. !execute
  C. #!
  D. @eacho off
  C. #!

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  Explanation

  #! is the symbol that should be placed at the top of a Bash script to ensure it can be executed. #! is also known as shebang or hashbang. It is a special notation that tells the operating system which interpreter to use to run the script. The

  shebang is followed by the path to the interpreter, such as /bin/bash for Bash, /bin/python for Python, or /bin/perl for Perl. For example, a Bash script that prints "Hello World" would start with:

  #!/bin/bash echo "Hello World"

  The shebang must be the first line of the script and must not have any spaces between the # and ! symbols. bash is not a valid shebang by itself, as it does not specify the path to the interpreter. !execute is not a valid shebang at all, as it does

  not start with #. @echo off is a command that disables the echoing of commands in a batch file on Windows, but it has nothing to do with Bash scripts on Linux.

  References:

  https://www.howtogeek.com/67469/the-beginners-guide-to-shell-scripting-the-basics/

  https://www.howtogeek.com/435903/what-is-a-shebang-line/