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Topic 3, Exam Set C
Question #:1 - (Exam Topic 3)
A server administrator deployed a new product that uses a non-standard port for web access on port 8443. However, users are unable to access the new application. The server administrator checks firewall rules and determines 8443 is allowed. Which of the following is most likely the cause of the issue?
Intrusion detection is blocking the port.
The new application's DNS entry is incorrect.
The application should be changed to use port 443.
The core switch has a network issue.
Answer: B
Explanation
A DNS entry is a record that maps a domain name to an IP address. If the DNS entry for the new application is incorrect, users will not be able to resolve the domain name to the correct IP address and port number. This will prevent them from accessing the application, even if the firewall rules allow port 8443. To fix this issue, the server administrator should verify and update the DNS entry for the new application.
References: CompTIA Server+ Study Guide, Chapter 6: Networking, page 230.
Question #:2 - (Exam Topic 3)
An administrator notices a server is offline. Upon checking the console, the administrator discovers the server is stuck at:
Configuring Memory.............
After a reboot, the server still exhibits the same behavior. The administrator is able to log in to the OOB remote management but is unable to log in to the server. Which of the following is the most likely cause of this issue?
A DIMM has failed
The VRAM is insufficient
The RAID cache has failed
D. The BIOS needs to be updated
Answer: A
Explanation
The error message "Configuring Memory..." and the fact that the server is stuck at this point strongly suggest that . Memory issues are commonly diagnosed when servers hang a DIMM (memory module) has failed during the memory configuration phase of boot.
DIMM failure (Answer A): When a memory module fails, the server can get stuck at the memory initialization process during boot.
VRAM insufficiency (Option B): VRAM (video memory) issues would typically cause display-related errors, not memory configuration issues.
RAID cache failure (Option C): RAID cache issues would lead to storage errors but not prevent the system from configuring memory.
BIOS update (Option D): While BIOS issues can cause boot failures, the error message suggests a memory-specific issue.
CompTIA Server+ Reference:This topic relates to : Diagnose hardware problems. SK0-005 Objective 3.3
Question #:3 - (Exam Topic 3)
A server administrator has received tickets from users who report the system runs very slowly and various unrelated messages pop up when they try to access an internet-facing web application using default ports. The administrator performs a scan to check for open ports and reviews the following report:
Starting Nmap 7.70 https://nmap.org) at 2019-09-19 14:30 UTC
Nmap scan report for www.abc.com (172.45.6.85)
Host is up (0.0021s latency)
Other addresses for www.abc.com (not scanned) : 4503 : F7b0 : 4293: 703: : 3209
RDNS record for 172.45.6.85: 1ga45s12-in-f1.2d100.net
Port State Service
21/tcp filtered ftp
22/tcp filtered ssh
23/tcp filtered telnet
69/tcp open @username.com
80/tcp open http
110/tcp filtered pop
143/tcp filtered imap
443/tcp open https
1010/tcp open www.popup.com
3389/tcp filtered ms-abc-server
Which of the following actions should the server administrator perform on the server?
Close ports 69 and 1010 and rerun the scan.
Close ports 80 and 443 and rerun the scan.
Close port 3389 and rerun the scan.
Close all ports and rerun the scan.
Answer: A
Explanation
Port 69 is used for TFTP (Trivial File Transfer Protocol), which is an insecure and unencrypted protocol for file transfer. Port 1010 is used for a malicious website that generates pop-up ads. Both of these ports are likely to be exploited by hackers or malware to compromise the server or the web application. The server administrator should close these ports and rerun the scan to verify that they are no longer open12.
References = 1: Why Are Some Network Ports Risky, And How Do You Secure Them? - How-To Geek (https://www.howtogeek.com/devops/why-are-some-ports-risky-and-how-do-you-secure-them/) 2: Switchport Port Security Explained With Examples - ComputerNetworkingNotes(https://www.computernetworkingnotes. com/ccna-study-guide/switchport-port-security-explained-with-examples.html)
Question #:4 - (Exam Topic 3)
A technician is setting up a repurposed server. The minimum requirements are 2TB while ensuring the highest performance and providing support for one drive failure. The technician has the following six drives available:
500GB, 10,000rpm
600GB, 10,000rpm
500GB, 7,200rpm
500GB, 10,000rpm
600GB, 15,000rpm
600GB, 10,000rpm
Which of the following drive selections should the technician utilize to best accomplish this goal?
A. B. C.
D.
1, 2, 4, and 6
1, 2, 3, 5, and 6
1, 2, 4, 5, and 6
1, 2, 3, 4, and 6
Answer: C
Explanation
The goal is to achieve , , and . Using 2TB total storage high performance support for one drive failure RAID 5 or RAID 10 can provide redundancy while maximizing performance.
1, 2, 4, 5, and 6 (Answer C): This selection includes the highest-capacity and highest-performance drives (600GB and 500GB at high RPM speeds). Using these drives will provide the necessary capacity (500GB + 600GB + 500GB + 600GB + 600GB = 2.8TB) and performance with one drive redundancy (RAID 5 or 10).
Other options (A, B, D): These combinations either lack the necessary capacity or mix slower drives (7,200rpm), reducing overall performance.
CompTIA Server+ Reference:This topic is covered under : Explain storage SK0-005 Objective 1.5 technologies and RAID configurations.
Topic 2, Exam Set B
Question #:5 - (Exam Topic 2)
A security technician generated a public/private key pair on a server. The technician needs to copy the key pair to another server on a different subnet. Which of the following is the most secure method to copy the keys?
Answer: C
Explanation
SCP (Secure Copy Protocol) is a protocol that allows users to securely transfer files between servers using SSH (Secure Shell) encryption. SCP encrypts both the data and the authentication information, preventing unauthorized access, interception, or modification of the files1. SCP also preserves the file attributes, such as permissions, timestamps, and ownership2.
Question #:6 - (Exam Topic 2)
Which of the following life-cycle management phases deals with a server that is no longer in operation? End-of-life
Answer: A
Explanation
End-of-life is the phase of lifecycle management that deals with a server that is no longer in operation. End-oflife means that the server has reached the end of its useful life and is no longer supported by the manufacturer or the service provider. End-of-life may also imply that the server is obsolete, incompatible, or inefficient for the current needs and standards1. End-of-life servers may be decommissioned, recycled, donated, or disposed of according to the organizational policies and environmental regulations
Question #:7 - (Exam Topic 2)
Corporate policy mandates that logs from all servers be available for review regardless of the state of the server. Which of the following must be configured to comply with this policy?
Aggregation
Subscription
Merging
Collection
Answer: A
Explanation
Aggregation is the process of collecting, standardizing, and consolidating log data from multiple sources into a central location. Aggregation makes it easier to search, analyze, and report on log data, as well as to comply with security policies and regulations. By aggregating logs from all servers, regardless of their state, the corporate policy can ensure that no log data is lost or inaccessible in case of a server failure or outage
Question #:8 - (Exam Topic 2)
A server administrator encounters some issues with the server OS after applying monthly patches. Which of the following troubleshooting steps should the administrator perform?
Implement rollback procedures.
Upgrade the drivers.
Reinstall the OS.
Reboot the server.
Answer: A
Explanation
This option would restore the server OS to a previous state before applying the monthly patches. This would help troubleshoot the issues caused by the patches and determine if they are compatible with the server OS. The other options would either not address the issues, cause data loss, or require more time and resources
Topic 1, Exam Set A
Question #:9 - (Exam Topic 1)
A server administrator is using remote access to update a server. The administrator notices numerous error messages when using YUM to update the applications on a server. Which of the following should the administrator check FIRST?
Network connectivity on the server
LVM status on the server
Disk space in the /var directory
YUM dependencies
Answer: C
Explanation
The administrator should check disk space in the /var directory first when using YUM to update applications on a server. YUM stands for Yellowdog Updater Modified, which is a software package manager for Linux systems that use RPM (Red Hat Package Manager) packages. YUM downloads and installs packages from online repositories and resolves dependencies automatically. YUM stores its cache files in the /var/cache/yum directory by default. These cache files include metadata and package data for each repository that YUM uses. If there is not enough disk space in the /var directory, YUM may fail to update applications and generate error messages.
Question #:10 - (Exam Topic 1)
A server administrator is swapping out the GPU card inside a server. Which of the following actions should the administrator take FIRST?
Inspect the GPU that is being installed.
Ensure the GPU meets HCL guidelines.
Shut down the server.
Disconnect the power from the rack.
Answer: C
Explanation
The first action that the administrator should take before swapping out the GPU card inside a server is to shut down the server. This is to ensure that the server is not running any processes that might be using the GPU
card, and to prevent any damage to the hardware or data loss due to sudden power loss. Shutting down the server also reduces the risk of electrostatic discharge (ESD) that might harm the components. Reference: https://pcgearhead.com/installing-a-new-gpu/
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