CompTIA SK0-005 Online Practice Questions and Exam Preparation

CompTIA SK0-005 Online Questions & Answers

• Question 1:

  A technician is sizing a new server and, for service reasons, needs as many hot-swappable components as possible. Which of the following server components can most commonly be replaced without downtime? (Select three).

  A. Drives
  B. Fans
  C. CMOSIC
  D. Processor
  E. Power supplies
  F. Motherboard
  G. Memory
  H. BIOS
  A. Drives
  B. Fans
  E. Power supplies

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  Explanation

  Drives, fans, and power supplies are server components that can most commonly be replaced without downtime if they are hot-swappable. Hot-swappable components can be removed and inserted while the server is running, without affecting its operation or performance. Drives store data and applications, fans cool down the server components, and power supplies provide electricity to the server. Replacing these components can prevent data loss, overheating, or power failure.

  References: CompTIA Server+ Certification Exam Objectives, Domain 2.0: Hardware, Objective 2.2: Given a scenario, install, configure and maintain server components.

• Question 2:

  A server administrator is tasked with upgrading the network on a server to 40Gbps. After installing the card, which of the following connectors should the administrator use?

  A. QSFP+
  B. 10 GigE
  C. SFP
  D. SFP+
  A. QSFP+

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  Explanation

  QSFP+ (Quad Small Form-factor Pluggable Plus) connectors are used in high-density, high-speed networking solutions such as 40 Gigabit Ethernet (40GbE) interfaces. When upgrading a server's network to 40Gbps, QSFP+ is the appropriate choice due to its capability to support such high-speed data transfer rates. 10 GigE, SFP, and SFP+ connectors are used for lower speed connections (10Gbps and below for SFP+ and 10 GigE, and even less for SFP), making them unsuitable for a 40Gbps network upgrade.

• Question 3:

  A newly installed server is accessible to local users, but remote users are unable to connect. Which of the following is MOST likely misconfigured?

  A. The IP address
  B. The default gateway
  C. The VLAN
  D. The subnet mask
  B. The default gateway

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  Explanation

  This is the most likely misconfigured setting because the default gateway is the router that connects the local network to other networks. If the default gateway is incorrect, the server will not be able to communicate with remote users or devices outside its own subnet.

  References: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig

• Question 4:

  Which of the following allows for a connection of devices to both sides inside of a blade enclosure?

  A. Midplane
  B. Active backplane
  C. Passive backplane
  D. Management module
  A. Midplane

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  Explanation

  The component that allows for a connection of devices to both sides inside of a blade enclosure is midplane. A midplane is a board or panel that connects two sets of connectors or devices in parallel with each other. A midplane is typically used in blade enclosures or chassis to provide power and data connections between blade servers on one side and power supplies, cooling fans, switches, or management modules on the other side. A midplane can also act as a backplane by providing bus signals or communication channels between devices.

• Question 5:

  When configuring networking on a VM, which of the following methods would allow multiple VMs to share the same host IP address?

  A. Bridged
  B. NAT
  C. Host only
  D. vSwitch
  B. NAT

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  Explanation

  The method that would allow multiple VMs to share the same host IP address is NAT. NAT (Network Address Translation) is a technique that allows multiple devices to use a single public IP address by mapping their private IP addresses to different port numbers. NAT can be used for VM networking to enable multiple VMs on the same host to access the internet or other networks using the host's IP address. NAT can also provide security benefits by hiding the VMs' private IP addresses from external networks.

  https://www.virtualbox.org/manual/ch06.html

• Question 6:

  Which of the following would a systems administrator most likely implement to encrypt data in transit for remote administration?

  A. Telnet
  B. SSH
  C. TFTP
  D. rlogin
  B. SSH

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  Explanation

  SSH (Secure Shell) is a protocol that would most likely be implemented to encrypt data in transit for remote administration. SSH provides secure communication between two devices over an unsecured network by using public-key cryptography and symmetric encryption. SSH can be used to remotely execute commands, transfer files, or tunnel other protocols. Telnet, TFTP, and rlogin are protocols that do not encrypt data in transit and are considered insecure for remote administration.

  References: [CompTIA Server+ Certification Exam Objectives], Domain 2.0: Networking, Objective 2.4: Given a scenario involving network security/access methods, implement an appropriate solution.

• Question 7:

  A technician replaces a single faulted disk in the following array: RAID 10, Four 15K SAS HDD. The technician replaces it from a disk in spare parts, and the array rebuilds the data in a few minutes. After the array rebuild is complete, the system reports the IOPS on the disk array have dropped by almost 60%. Which of the following should the technician investigate first?

  A. Check the RAID controller for background rebuild tasks
  B. Check the firmware version on the newly replaced disk.
  C. Check the RPM speed on the newly replaced disk.
  D. Check the cache settings on the RAID controller.
  C. Check the RPM speed on the newly replaced disk.

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  Explanation

• Question 8:

  Which of the following load-balancing methods would be BEST described as each connection selecting the next path?

  A. Least connection
  B. Source hashed
  C. Most recently used
  D. Round robin
  D. Round robin

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  Explanation

  Round robin - Assigns connections in order Most recently used (MRU) - Attempts to use existing machines for the workload but can spin up new VMs if needed Weighted scheduling - Used when the server's hardware capabilities vary, allocating more connections to the more powerful servers

• Question 9:

  A technician is trying to determine the reason why a Linux server is not communicating on a network. The returned network configuration is as follows:

  eth0: flags=4163 mtu 1500 inet 127.0.0.1 network 255.255.0.0 broadcast 127.0.0.1

  Which of the following BEST describes what is happening?

  A. The server is configured to use DHCP on a network that has multiple scope options
  B. The server is configured to use DHCP, but the DHCP server is sending an incorrect subnet mask
  C. The server is configured to use DHCP on a network that does not have a DHCP server
  D. The server is configured to use DHCP, but the DHCP server is sending an incorrect MTU setting
  C. The server is configured to use DHCP on a network that does not have a DHCP server

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  Explanation

  The reason why the Linux server is not communicating on a network is that it is configured to use DHCP on a network that does not have a DHCP server. DHCP (Dynamic Host Configuration Protocol) is a protocol that allows a client device to obtain an IP address and other network configuration parameters from a DHCP server automatically. However, if there is no DHCP server on the network, the client device will not be able to obtain a valid IP address and will assign itself a link- local address instead. A link-local address is an IP address that is only valid within a local network segment and cannot be used for communication outside of it. A link-local address has a prefix of 169.254/16 in IPv4 or fe80::/10 in IPv6. In this case, the Linux server has assigned itself a link-local address of 127.0.0.1, which is also known as the loopback address. The loopback address is used for testing and troubleshooting purposes and refers to the device itself. It cannot be used for communication with other devices on the network.

• Question 10:

  A technician is configuring a server that requires secure remote access. Which of the following ports should the technician use?

  A. 21
  B. 22
  C. 23
  D. 443
  B. 22

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  Explanation

  The technician should use port 22 to configure a server that requires secure remote access. Port 22 is the default port for Secure Shell (SSH), which is a protocol that allows secure remote login and command execution over a network connection using a command-line interface (CLI). SSH encrypts both the authentication and data transmission between the client and the server, preventing eavesdropping, tampering, or spoofing. SSH can be used to perform various tasks on a server remotely, such as configuration, administration, maintenance, troubleshooting, etc.