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CompTIA Server+ Certification Exam (SK0-005) is a globally recognized certification exam that validates the skills and knowledge required for server management and administration. SK0-005 exam is designed to test the candidate's ability to install, configure, operate, and maintain servers, storage, and other infrastructure components. Successful completion of SK0-005 exam enables an IT professional to demonstrate their expertise to potential employers and clients, making them more valuable to the organization.
NEW QUESTION # 59
A technician re working on a Linux server and re trying to access another server over the network. The technician gets server not found message when trying to execute ping servername but no error messages when using ping servername. Domain.com. Which of the following should the technician do to resolve the error?
- A. Configure the DNS address
- B. Modify nsswitch. Conf.
- C. Configure the domain search variable
- D. Change the permissions on resolv. conf
Answer: C
Explanation:
The domain search variable is used to specify a list of domains that are appended to a hostname when resolving it. If the servername is not fully qualified, the resolver will try each domain in the list until it finds a match or fails. By configuring the domain search variable, the technician can avoid typing the full domain name every time they want to ping a server. Verified Reference: [How to configure DNS suffixes on Linux systems]
NEW QUESTION # 60
A software developer is unable to reach an internal website. The developer's attempt to ping the FQDN returns the following IP address: 104.18.17.32. Which of the following is the most likely reason for this result?
- A. There is a manual entry in the hosts file.
- B. The default gateway is misconfigured.
- C. The NIC is set to DHCP.
- D. The primary DNS server is 8.8.8.8.
Answer: A
Explanation:
The most likely reason for this result is that there is a manual entry in the hosts file that maps the FQDN to an incorrect IP address (104.18.17.32). The hosts file is a text file that contains mappings of hostnames or domain names to IP addresses, which are used by the operating system to resolve names before querying DNS servers on the network or internet. The hosts file can be used to override DNS settings or block access to certain websites by redirecting them to different IP addresses, such as localhost (127.O.O.l) or invalid addresses (O.O.O.O). If there is a manual entry in the hosts file that conflicts with DNS records, it can cause name resolution errors or connectivity issues. Reference: [CompTIA Server+ Certification Exam Objectives], Domain 4.0: Networking, Objective 4.l: Given a scenario, configure network settings for servers.
NEW QUESTION # 61
A server administrator needs to harden a server by only allowing secure traffic and DNS inquiries.
A port scan reports the following ports are open:
443
636
Which of the following open ports should be closed to secure the server properly? (Choose two.)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
Answer: C,F
Explanation:
Port 21 and File Transfer
FTP is often thought of as a "not secure" file transfer protocol. This is mainly due to FTP sending data in clear text and offering an anonymous option with no password required. However, FTP is a trusted and still widely used protocol for transferring files Is port 23 secure?
Port 23 - Telnet. A predecessor to SSH, is no longer considered secure and is frequently abused by malware.
NEW QUESTION # 62
A server technician has been asked to upload a few files from the internal web server to the internal FTP server. The technician logs in to the web server using PuTTY, but the connection to the FTP server fails. However, the FTP connection from the technician's workstation is successful. To troubleshoot the issue, the technician executes the following command on both the web server and the workstation:
ping ftp.acme.local
The IP address in the command output is different on each machine.
Which of the following is the MOST likely reason for the connection failure?
- A. A misconfigured hosts.deny file
- B. A misconfigured firewall
- C. A misconfigured hosts.allow file
- D. A misconfigured hosts file
Answer: D
Explanation:
The IP address in the command output is different on each machine.
Hosts.allow and hosts.deny are for ACL not direction.
A host file that is different on each machine would cause the IP address to be different.
NEW QUESTION # 63
A technician is monitoring a server and notices there is only one NIC plugged in. but the server has two. The NIC is oversaturated, and the technician would like to increase the available bandwidth. Which of the following solutions would be the BEST option to increase the speed of this NIC?
- A. Heartbeat
- B. Most recently used
- C. Link aggregation
- D. Active-active
Answer: C
Explanation:
Explanation
This is the best solution to increase the speed of the NIC because link aggregation is a technique that combines multiple physical network interfaces into a single logical interface. This can increase the bandwidth, redundancy, and load balancing of network traffic. Link aggregation requires both the server and the switch to support it and be configured accordingly. References:
https://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html
NEW QUESTION # 64
A system administrator has been alerted to a zero-day vulnerability that is impacting a service enabled on a server OS. Which of the following would work BEST to limit an attacker from exploiting this vulnerability?
- A. Closing open ports
- B. Enabling a NIDS
- C. Installing the latest patches
- D. Enabling antivirus protection
Answer: C
Explanation:
The best way to limit an attacker from exploiting a zero-day vulnerability that is impacting a service enabled on a server OS is to install the latest patches. Patches are updates that fix bugs, improve security, or add features to software. Installing patches can help prevent attackers from exploiting known vulnerabilities that have been fixed by the software vendor. A zero-day vulnerability is a vulnerability that is unknown to the vendor or the public until it is exploited by an attacker. Therefore, installing patches as soon as they are available can reduce the window of opportunity for attackers to exploit zero-day vulnerabilities. Reference: https://www.ibm.com/cloud/learn/patch-management
NEW QUESTION # 65
An administrator is troubleshooting a failure in the data center in which a server shut down/turned off when utility power was lost The server had redundant power supplies. Which of the following is the MOST likely cause of this failure?
- A. Both power supplies were connected to the same power feed
- B. The power supplies were not cross-connected
- C. Redundant power supplies require 220V power
- D. The UPS batteries were overcharged.
Answer: A
Explanation:
The most likely cause of this failure is that both power supplies were connected to the same power feed, which means that they both lost power when utility power was lost. To prevent this from happening, redundant power supplies should be connected to different power feeds, preferably from different sources, such as a UPS or a generator. Verified Reference: [Redundant Power Supply Best Practices]
NEW QUESTION # 66
An administrator is configuring a host-based firewall tor a server. The server needs to allow SSH, FTP, and LDAP traffic. Which of the following ports must be configured so this traffic will be allowed? (Select THREE).
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
- G. 6
- H. 7
Answer: A,C,E
Explanation:
Explanation
These are the port numbers that must be configured on a host-based firewall for a server that needs to allow SSH, FTP, and LDAP traffic. A port number is a numerical identifier that specifies a communication endpoint for a network protocol or an application. A host-based firewall is a software tool that monitors and controls incoming and outgoing network traffic on a single host based on predefined rules. SSH (Secure Shell) is a protocol that allows secure remote access and file transfer over an encrypted connection. The default port number for SSH is 22. FTP (File Transfer Protocol) is a protocol that allows transferring files between hosts over a network connection. The default port number for FTP is 21. LDAP (Lightweight Directory Access Protocol) is a protocol that allows accessing and managing directory services over a network connection. The default port number for LDAP is 389. References:
https://www.howtogeek.com/190014/virtualization-basics-understanding-techniques-and-fundamentals/
https://www.howtogeek.com/220152/what-is-the-difference-between-127.0.0.1-and-0.0.0.0/
https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/
NEW QUESTION # 67
A technician recently upgraded several pieces of firmware on a server. Ever since the technician rebooted the server, it no longer communicates with the network. Which of the following should the technician do FIRST to return the server to service as soon as possible?
- A. Downgrade the NIC firmware
- B. Replace the NIC
- C. Reseat the NIC
- D. Make sure the NIC is on the HCL
Answer: A
NEW QUESTION # 68
A server administrator notices the /var/log/audit/audit.log file on a Linux server is rotating loo frequently. The administrator would like to decrease the number of times the leg rotates without losing any of the information in the logs. Which of the following should the administrator configure?
- A. Move the audit. leg files to a remote syslog server.
- B. Remove the tog rotate directive from the audit .log We configuration.
- C. increase the audit. log file size in the appropriate confutation file.
- D. Decrease the duration of the log rotate cycle tor the audit. log file.
Answer: C
Explanation:
The audit.log file is a file that records security-related events on a Linux server, such as user login, file access, and system commands. The logrotate utility is a tool that rotates, compresses, and deletes old log files based on certain criteria, such as size, time, or frequency. To decrease the number of times the log rotates without losing any information, the administrator should increase the audit.log file size in the appropriate configuration file, such as /etc/logrotate.conf or /etc/logrotate.d/auditd. Verified Reference: [audit.log], [logrotate]
NEW QUESTION # 69
A server is performing slowly, and users are reporting issues connecting to the application on that server. Upon investigation, the server administrator notices several unauthorized services running on that server that are successfully communicating to an external site. Which of the following are MOST likely causing the issue?
(Choose two.)
- A. The server is infected with a virus
- B. Intrusion detection is enabled on the network
- C. Unnecessary services are disabled on the server
- D. SELinux is enabled on the server
- E. The firewall rule for the server is misconfigured
- F. Adware is installed on the users' devices
Answer: A,F
NEW QUESTION # 70
A server administrator is trying to determine the cause of a slowdown on a database server. Upon investigation, the administrator determines the issue is in the storage subsystem. Which of the following will most likely resolve this issue?
- A. Reformatting the disk as FAT32
- B. Implementing deduplication on the storage
- C. Increasing IOPS by implementing flash storage
- D. Extending capacity by installing a 4TB SATA disk
Answer: C
Explanation:
Explanation
Increasing IOPS (input/output operations per second) by implementing flash storage is the most likely solution to resolve a slowdown issue in the storage subsystem of a database server. Flash storage uses solid-state drives (SSDs) that have faster read/write speeds and lower latency than traditional hard disk drives (HDDs). This can improve the performance of database queries and transactions. Implementing deduplication, extending capacity, or reformatting the disk as FAT32 are not likely to resolve the issue, as they do not affect the IOPS of the storage subsystem. References: [CompTIA Server+ Certification Exam Objectives], Domain 3.0:
Storage, Objective 3.5: Summarize hardware and features of various storage technologies.
NEW QUESTION # 71
Which of the following server types would benefit MOST from the use of a load balancer?
- A. Web server
- B. File server
- C. DHCP server
- D. DNS server
Answer: A
Explanation:
Explanation
The server type that would benefit most from the use of a load balancer is web server. A web server is a server that hosts web applications or websites and responds to requests from web browsers or clients. A load balancer is a device or software that distributes network traffic across multiple servers based on various criteria, such as availability, capacity, or performance. A load balancer can improve the scalability, reliability, and performance of web servers by balancing the workload and preventing any single server from being overloaded or unavailable.
NEW QUESTION # 72
A server technician notices a server is very low on disk space. Upon inspecting the disk utilization, the technician discovers server logs are taxing up a large amount of space. There is no central log server. Which of the following would help free up disk space?
- A. Log alerting
- B. Log shipping
- C. Log rotation
- D. Log analysis
Answer: B
NEW QUESTION # 73
A server administrator needs to configure a server on a network that will have no more than 30 available IP addresses.
Which of the following subnet addresses will be the MOST efficient for this network?
- A. 255.255.255.0
- B. 255.255.255.224
- C. 255.255.255.128
- D. 255.255.255.252
Answer: B
NEW QUESTION # 74
Which of the following can be used to map a network drive to a user profile?
- A. System service
- B. Network service
- C. Login script
- D. Kickstart script
Answer: A
NEW QUESTION # 75
A server administrator is swapping out the GPU card inside a server.
Which of the following actions should the administrator take FIRST?
- A. Disconnect the power from the rack.
- B. Shut down the server.
- C. Ensure the GPU meets HCL guidelines.
- D. Inspect the GPU that is being installed.
Answer: C
Explanation:
Hardware must be compatible with HCL (Hardware Compatibility List).
NEW QUESTION # 76
Which of the following BEST describes a warm site?
- A. The site has all infrastructure and live data.
- B. The site has all infrastructure and some data.
- C. The site has partial infrastructure and some data.
- D. The site has partially redundant infrastructure and no network connectivity.
Answer: C
NEW QUESTION # 77
A server room with many racks of servers is managed remotely with occasional on-site support.
Which of the following would be the MOST cost-effective option to administer and troubleshoot network problems locally on the servers?
- A. Crash cart
- B. Management port
- C. IP KVM
- D. KVM
Answer: D
NEW QUESTION # 78
A server administrator is currently working on an incident. Which of the following steps should the administrator perform before resolving the issue?
- A. Identify changes to the server.
- B. Inform the impacted users.
- C. Make the changes to the system.
- D. Determine the probable causes.
Answer: D
Explanation:
The step that the server administrator should perform before resolving the issue is to determine the probable causes. This step is part of the troubleshooting process that follows a logical and systematic approach to identify and solve problems with servers and applications. The troubleshooting process consists of several steps, such as:
Identify the problem: Gather information from various sources, such as users, logs, or alerts, to understand the symptoms and scope of the problem.
Establish a theory of probable cause: Analyze the information and formulate one or more possible causes of the problem based on evidence or experience.
Test the theory to determine cause: Perform tests or experiments to verify or eliminate each possible cause until the root cause is found.
Establish a plan of action to resolve the problem and implement the solution: Design and execute a plan to fix the problem using appropriate tools and techniques.
Verify full system functionality and implement preventive measures: Confirm that the problem is resolved and that no other issues arise as a result of the solution. Implement preventive measures to avoid recurrence of the problem or improve performance.
Document findings, actions, and outcomes: Record the details of the problem, its cause, its solution, and its outcome for future reference or knowledge sharing. Reference: [CompTIA Server+ Certification Exam Objectives], Domain 6.0: Troubleshooting, Objective 6.1: Given a scenario involving server hardware issues (e.g., power supply failure), troubleshoot using appropriate tools.
NEW QUESTION # 79
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