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質問 # 184
The Chief Information Officer (CIO) of a datacenter is concerned that transmissions from the building can be detected from the outside. Which of the following would resolve this concern? (Choose two.)
- A. Reflective glass
- B. Signal blocking
- C. RFID
- D. Camouflage
- E. Proximity readers
- F. Bollards
正解：C、E
解説：
RFID is an acronym for "radio-frequency identification" and refers to a technology whereby digital data encoded in RFID tags or smart labels (defined below) are captured by a reader via radio waves.
Proximity readers work by constantly emitting a short range radio frequency (RF) field. When a proximity card comes within range of this field, an integrated chip within the card is powered up and the chip transmits a card number back to the reader. Not all proximity cards are born equal though, and it is important that the differences are weighed up when making a decision about which technology to adopt.
Reference:
https://www.ict.co/Choosing-Card-Technology
質問 # 185
Which of me following BEST describes a disaster recovery site with a target storage array that receives replication traffic and servers that are only powered on In the event of a disaster?
- A. Cold
- B. Cloud
- C. Hot
- D. Warm
正解：C
質問 # 186
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. Sniffer
- B. Nbtstat
- C. Anti-malware
- D. Port scanner
正解：A
解説：
Explanation
Application consistent backup is a method of backing up data that ensures the integrity and consistency of the application state. It involves notifying the application to flush its data from memory to disk and quiescing any write operations before taking a snapshot of the data. If the databases were not backed up to be application consistent, they might contain incomplete or corrupted data that cannot be restored properly.
References:
CompTIA Server+ Certification Exam Objectives1, page 12
What is Application Consistent Backup and How to Achieve It2
Application-Consistent Backups3
質問 # 187
An administrator has been asked to disable CPU hyperthreading on a server to satisfy a licensing issue. Which of the following best describes how the administrator will likely perform this action?
- A. Modify the startup configuration.
- B. Use the BIOS/UEFI setup.
- C. Use a RDP/VNC session.
- D. Use a PowerSheII/Bash script.
正解：B
解説：
Explanation
The BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) setup is a program that allows users to configure the hardware settings of a computer, such as the CPU, memory, disk, and boot options. The BIOS/UEFI setup can be accessed by pressing a specific key (such as F2, F10, or Delete) during the boot process, before the operating system loads12.
One of the settings that can be changed in the BIOS/UEFI setup is the CPU hyperthreading option.
Hyperthreading is a technology that enables a single physical CPU core to execute two threads or tasks simultaneously, improving the performance and efficiency of multi-threaded applications. However, some software licenses may limit the number of CPU cores or threads that can be used, and therefore require disabling hyperthreading on the server34.
To disable hyperthreading on a server, the administrator will likely need to enter the BIOS/UEFI setup and navigate to the processor options menu. There, the administrator will find a setting for Intel Hyperthreading Technology or Hyperthreading Function, which can be enabled or disabled. The administrator will need to disable this setting and save the changes. This will turn off hyperthreading on the server and reduce the number of logical CPUs to match the number of physical cores5.
質問 # 188
Users at a company work with highly sensitive data. The security department implemented an administrative and technical control to enforce least-privilege access assigned to files. However, the security department has discovered unauthorized data exfiltration. Which of the following is the BEST way to protect the data from leaking?
- A. Utilize privacy screens.
- B. Enforce the lock-screen feature.
- C. Install a DLP solution.
- D. Implement disk quotas.
正解：C
解説：
Explanation
Components of a Data Loss Solution
質問 # 189
Which of the following allows for a connection of devices to both sides inside of a blade enclosure?
- A. Midplane
- B. Passive backplane
- C. Management module
- D. Active backplane
正解：A
質問 # 190
An administrator is receiving reports that users in a remote office are unable to log in to the domain. The network appears to be up between the sites, which are in different states. Which of the following is the most likely cause of the issue?
- A. MFA is not working
- B. The wrong time zone was set in the remote office
- C. The NTP on the client side is misconfigured
- D. The user accounts are locked out
正解：C
解説：
A misconfigured NTP (Network Time Protocol) on the client side can cause authentication issues because Active Directory relies on accurate time synchronization between clients and domain controllers for security purposes. If the clocks are out of sync, even by a few minutes, it can prevent users from authenticating to the domain.
* NTP misconfiguration (Answer B): If the client machines have incorrect time settings, it can disrupt Kerberos-based authentication, which is time-sensitive.
* Locked user accounts (Option A): While it can prevent login, it would affect individual users rather than a whole office.
* MFA (Option C): Multi-factor authentication not working would typically cause a login issue but is less likely across an entire remote office.
* Wrong time zone (Option D): While incorrect time zones can cause confusion, they usually don't prevent logins as long as the NTP server synchronizes the actual time correctly.
CompTIA Server+ Reference:This topic is covered under SK0-005 Objective 2.4: Troubleshoot common server problems.
質問 # 191
A systems administrator deployed a new web proxy server onto the network. The proxy server has two interfaces: the first is connected to an internal corporate firewall, and the second is connected to an internet-facing firewall. Many users at the company are reporting they are unable to access the Internet since the new proxy was introduced. Analyze the network diagram and the proxy server's host routing table to resolve the Internet connectivity issues.
INSTRUCTIONS
Perform the following steps:
1. Click on the proxy server to display its routing table.
2. Modify the appropriate route entries to resolve the Internet connectivity issue.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
Explanation
Table Description automatically generated
Table Description automatically generated
質問 # 192
Two developers are working together on a project, and they have built out a set of snared servers that both developers can access over the internet. Which of the following cloud models is this an example of?
- A. Public
- B. Hybrid
- C. Community
- D. Private
正解：A
解説：
Explanation
A public cloud is a cloud model that provides shared resources and services over the internet to multiple users or organizations. The cloud provider owns and manages the infrastructure and charges users based on their usage or subscription. A public cloud can offer scalability, flexibility, and cost-efficiency for users who need access to various applications and data without investing in their own hardware or software. Verified References: [Public cloud], [Cloud model]
質問 # 193
A server administrator is instating a new server in a data center. The administrator connects the server to a midplane but does not connect any cables Which of the following types of servers is the administrator MOST likely installing?
- A. Blade
- B. Tower
- C. Virtual
- D. Rack
正解：A
解説：
Explanation
A blade server is a type of server that is installed in a chassis or an enclosure that provides power, cooling, networking, and management features. The blade server does not have any cables attached to it, as it connects to the chassis through a midplane or a backplane. A blade server can save space, energy, and cost compared to other types of servers. Verified References: [Blade server], [Chassis]
質問 # 194
A security analyst completed a port scan of the corporate production-server network. Results of the scan were then provided to a systems administrator for immediate action. The following table represents the requested changes:
The systems administrator created local firewall rules to block the ports indicated above. Immediately, the service desk began receiving calls about the internet being down. The systems administrator then reversed the changes, and the internet became available again. Which of the following ports on DNSSrv must remain open when the firewall rules are reapplied?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
正解：B
解説：
Port 53 is the standard port for DNS (Domain Name System) queries and responses. DNS is a service that translates domain names (such as www.example.com) into IP addresses (such as 192.0.2.1) and vice versa. DNS is essential for internet connectivity, as it allows users and applications to access websites and other online resources by using human-readable names instead of numerical addresses1.
The DNSSrv server is a DNS server that provides name resolution for the corporate network. If port 53 is blocked on this server, it will not be able to communicate with other DNS servers or clients, and the name resolution will fail. This will prevent users from accessing any websites or online services that rely on domain names, such as web browsers, email clients, or cloud applications. Therefore, port 53 must remain open on DNSSrv to allow DNS traffic to flow.
質問 # 195
A server administrator is creating a new server that will be used to house customer sales records. Which of the following roles will MOST likely be Installed on the server?
- A. Database
- B. Messaging
- C. Print
- D. File
正解：A
解説：
A database server is a server that hosts a database management system (DBMS) that stores, organizes, and manipulates data. A database server is suitable for housing customer sales records, as it can provide fast and secure access, query and analysis capabilities, backup and recovery options, and scalability and performance optimization. Some examples of database servers are Microsoft SQL Server, Oracle Database, MySQL, and PostgreSQL. Verified Reference: [What is a Database Server?]
質問 # 196
The accounting department needs more storage and wants to retain the current data for quick read-write access. The accounting server does not have any internet drive bays available to keep both disks however the server does have USB 3 0 and eSATA ports available. Which of the following is the BEST way to accomplish the department's goals?
- A. Transfer the existing data to an external eSATA enclosure.
- B. Move the existing data to a new. larger internal hard drive.
- C. Copy the existing data to an external USB 3 0 enclosure.
- D. Place the existing data on a DVD and use the internal DVD-ROM drive.
正解：A
解説：
The best way to accomplish the department's goals is to transfer the existing data to an external eSATA enclosure, which is a device that connects an external hard drive to a computer using an eSATA port. This will allow the accounting department to retain the current data for quick read-write access, as eSATA provides high-speed data transfer rates and supports hot-plugging. Unlike USB 3.0, eSATA does not share bandwidth with other devices, which can improve performance and reliability. Verified Reference: [eSATA vs USB 3.0]
質問 # 197
Which of the following is the MOST secure method to access servers located in remote branch offices?
- A. Use a Telnet connection
- B. Use a role-based access policy
- C. Use a password complexity policy
- D. Use an MFA out-of-band solution
正解：D
解説：
MFA for the entire network and also to access a remote server.
Some examples of out-of-band authentication (when paired with a typical online login) include:
- Push notifications sent to a mobile device
- QR codes with encrypted transaction data
- Biometric readers for fingerprint scans or facial recognition
- Phone calls for voice authentication
質問 # 198
A junior administrator reported that the website used for anti-malware updates is not working. The senior administrator then discovered all requests to the anti-malware site are being redirected to a malicious site.
Which of the following tools should the senior administrator check first to identify the potential cause of the issue?
- A. Sniffer
- B. File integrity monitor
- C. Port scanner
- D. Data loss prevention
正解：A
解説：
A sniffer (also known as a packet analyzer) is a tool that captures and inspects data packets traveling across the network. In this case, using a sniffer would help identify suspicious or malicious redirection of traffic, possibly caused by a man-in-the-middle attack, DNS hijacking, or malware.
* Sniffer (Answer D): This tool will allow the senior administrator to inspect the network traffic and identify if and how requests to the anti-malware website are being intercepted or redirected.
* Data loss prevention (Option A): DLP tools focus on preventing data leakage rather than analyzing traffic redirection.
* File integrity monitor (Option B): This checks for unauthorized changes to files, which may not directly address network traffic redirection.
* Port scanner (Option C): A port scanner would only identify open ports on devices, which is unrelated to the redirection issue.
CompTIA Server+ Reference:This topic is addressed under SK0-005 Objective 4.2: Explain server roles and their purposes.
質問 # 199
A server administrator is creating a script that will move files only if they were created before a date input by the user. Which of the following constructs will allow the script to apply this test until all available files are assessed?
- A. Variable
- B. Loop
- C. Conditional
- D. Comparator
正解：B
解説：
Explanation
A loop is a script construct that allows the script to repeat a block of code until a certain condition is met or for a specified number of times. A loop can be used to apply a test to each file in a directory and move the files that meet the criteria. For example, in a bash script, a loop can be written as:
#!/bin/bash
# Ask the user for the date
echo "Enter the date (YYYY-MM-DD):"
read date
# Loop through all the files in the current directory
for file in *
do
# Check if the file was created before the date
if [[ $(date -r "$file" +%F) < $date ]]
then
# Move the file to another location
mv "$file" /path/to/destination
fi
done
Copy
A variable is a script construct that allows the script to store and manipulate data. A variable can be used to store the date input by the user, but it cannot apply a test to each file1 A comparator is a script construct that allows the script to compare two values and determine their relationship. A comparator can be used to check if a file was created before the date, but it cannot repeat the test for all files1 A conditional is a script construct that allows the script to execute different blocks of code based on certain conditions. A conditional can be used to decide whether to move a file or not, but it cannot iterate over all files1
1: CompTIA Server+ Certification Exam Objectives
質問 # 200
A server administrator needs to create a new folder on a file server that only specific users can access. Which of the following BEST describes how the server administrator can accomplish this task?
- A. Assign ownership on the folder for each user.
- B. Create a group that includes all users and assign it to an ACL.
- C. Assign individual permissions on the folder to each user.
C Create a group that includes all users and assign the proper permissions.
正解：A
解説：
The top portion of the dialog box lists the users and/or groups that have access to the file or folder.
Reference: https://www.uwec.edu/kb/article/drives-establishing-windows-file-and-folder-level-permissions/
質問 # 201
A company is reviewing options for its current disaster recovery plan and potential changes to it. The security team will not allow customer data to egress to non-company equipment, and the company has requested recovery in the shortest possible time. Which of the following will BEST meet these goals?
- A. Cloud recovery
- B. A cold site
- C. A warm site
- D. A hot site
正解：D
解説：
Explanation
A hot site is a type of disaster recovery site that has all the equipment and data ready to resume operations as soon as possible after a disaster. A hot site is usually located in a different geographic area than the primary site and has redundant power, cooling, network, and security systems. A hot site is best for the company that wants to recover in the shortest possible time and does not want customer data to egress to non-company equipment. A warm site is a type of disaster recovery site that has some equipment and data ready, but requires some configuration and restoration before resuming operations. A cold site is a type of disaster recovery site that has only basic infrastructure and space available, but requires significant setup and installation before resuming operations. Cloud recovery is a type of disaster recovery service that uses cloud-based resources and platforms to store backups and restore data and applications after a disaster. References:
https://www.techopedia.com/definition/11172/hot-site
https://www.techopedia.com/definition/11173/warm-site
https://www.techopedia.com/definition/11174/cold-site
https://www.techopedia.com/definition/29836/cloud-recovery
質問 # 202
A company recently implemented VolP across a multicampus environment with ten locations. The company uses many network technologies, including fiber, copper, and wireless. Users calling between three of the locations have reported that voices sound strange. Which of the following should be monitored to narrow down the issue?
- A. Network latency
- B. CPU utilization
- C. RAM utilization
- D. Disk IOPS
正解：A
解説：
Network latency is the measure of delay in data transmission over a network. It can affect the quality of voice over IP (VoIP) calls by causing echo, jitter, or distortion. Network latency can be caused by various factors such as network congestion, distance, routing, or bandwidth. To monitor network latency, you can use tools such as ping, traceroute, or network analyzers.
質問 # 203
Which of the following is typical of software licensing in the cloud?
- A. Site-based
- B. Subscription-based
- C. Per socket
- D. Perpetual
正解：B
解説：
Explanation
Cloud software licensing refers to the process of managing and storing software licenses in the cloud. The benefits of cloud software licensing models are vast. The main and most attractive benefit has to do with the ease of use for software vendors and the ability to provide customizable cloud software license management based on customer needs and desires . Cloud-based licensing gives software developers and vendors the opportunity to deliver software easily and quickly and gives customers full control over their licenses, their analytics, and more1. Cloud based licensing gives software sellers the ability to add subscription models to their roster of services1. Subscription models are one of the most popular forms of licensing today1. Users sign up for a subscription (often based on various options and levels of use, features, etc.) and receive their licenses instantly1. References: 1 Everything You Need to Know about Cloud Licensing | Thales
質問 # 204
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
正解：B、D、G
解説：
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/
質問 # 205
A security analyst completed a port scan of the corporate production-server network. Results of the scan were then provided to a systems administrator for immediate action. The following table represents the requested changes:
The systems administrator created local firewall rules to block the ports indicated above. Immediately, the service desk began receiving calls about the internet being down. The systems administrator then reversed the changes, and the internet became available again. Which of the following ports on DNSSrv must remain open when the firewall rules are reapplied?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
正解：B
解説：
a. DNS is essential for internet connectivity, as it allows users and applications to access websites and other online resources by using human-readable names instead of numerical addresses1.
The DNSSrv server is a DNS server that provides name resolution for the corporate network. If port 53 is blocked on this server, it will not be able to communicate with other DNS servers or clients, and the name resolution will fail. This will prevent users from accessing any websites or online services that rely on domain names, such as web browsers, email clients, or cloud applications. Therefore, port 53 must remain open on DNSSrv to allow DNS traffic to flow.
質問 # 206
A datacenter in a remote location lost power. The power has since been restored, but one ol the servers has not come back online. After some investigation, the server is found to still be powered off. Which of the following is the BEST method to power on the server remotely?
- A. IP KVM
- B. Crash cart
- C. RDP
- D. Out-of-band console
正解：D
解説：
Explanation
Out-of-band console is a tool that can be used to command a remote shutdown of a physical Linux server.
Out-of-band console is a method of accessing a server's console through a dedicated management port or device that does not rely on the server's operating system or network connection. Out-of-band console can be used to power cycle, reboot, update firmware, monitor performance, and perform other tasks remotely even if the server is unresponsive or offline. Crash cart is a mobile unit that contains a keyboard, monitor, mouse, and other tools that can be used to troubleshoot a server on-site, but it requires physical access to the server. IP KVM (Internet Protocol Keyboard Video Mouse) switch is a hardware device that allows remote access to multiple servers using a web browser or a client software, but it requires network connectivity and may not work if the SSH connection is lost. RDP (Remote Desktop Protocol) is a protocol that allows remote access to a Windows server's graphical user interface, but it does not work on Linux servers and requires network connectivity. References: https://www.techopedia.com/definition/13623/crash-cart
https://www.techopedia.com/definition/13624/kvm-switchhttps://www.techopedia.com/definition/3422/remote-d
質問 # 207
A server technician is deploying a server with eight hard drives. The server specifications call for a RAID configuration that can handle up to two drive failures but also allow for the least amount of drive space lost to RAID overhead. Which of the following RAID levels should the technician configure for this drive array?
- A. RAID 10
- B. RAID 0
- C. RAID 6
- D. RAID 5
正解：C
解説：
The technician should configure RAID 6 for this drive array to meet the server specifications. RAID 6 is a type of RAID level that provides fault tolerance and performance enhancement by using striping and dual parity. Striping means dividing data into blocks and distributing them across multiple disks to increase speed and capacity. Parity means calculating and storing extra information that can be used to reconstruct data in case of disk failure. RAID 6 uses two sets of parity information for each stripe, which are stored on different disks. This way, RAID 6 can handle up to two disk failures without losing any data or functionality. RAID 6 also allows for the least amount of drive space lost to RAID overhead compared to other RAID levels that can handle two disk failures, such as RAID 1+0 or RAID 0+1.
質問 # 208
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