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質問 # 134
Which of the following would a systems administrator implement to ensure all web traffic is secure?
- A. SMTP
- B. PGP
- C. SSH
- D. SSL
正解：D
解説：
Secure Sockets Layer (SSL): SSL and its successor Transport Layer Security (TLS) enable client and server computers to establish a secure connection session and manage encryption and decryption activities.
Reference: https://paginas.fe.up.pt/~als/mis10e/ch8/chpt8-4bullettext.htm
質問 # 135
Which of the following licensing models is MOST appropriate tor a data center that has a variable daily equipment count?
- A. Per user
- B. Per server
- C. Per core
- D. Pet site
正解：C
解説：
A per core licensing model is based on the number of processor cores in a server. This model is suitable for a data center that has a variable daily equipment count, as it allows for scaling up or down the number of cores as needed. A per core licensing model also provides better performance and efficiency than other models. Verified References: [Per Core Licensing and Basic Definitions]
質問 # 136
The management team at a healthcare organization is concerned about being able to access the dairy vital records if there is an IT disaster that causes both servers and the network lo be offline. Which of the following backup types can the organization use to mitigate this risk?
- A. Print
- B. Tape
- C. Disk
- D. Cloud
正解：A
解説：
Explanation
A print backup is a type of backup that can be used to mitigate the risk of being unable to access the daily vital records if there is an IT disaster that causes both servers and the network to be offline. A print backup is a backup that involves printing out the data on paper and storing it in a secure location. A print backup can provide offline access to the data without relying on any hardware or software components that may be affected by the disaster. However, a print backup has some drawbacks such as high cost, low efficiency, low security, and environmental impact. A tape backup is a type of backup that involves storing the data on magnetic tape cartridges that can be accessed using a tape drive or a tape library. A tape backup can provide offline access to the data with high capacity, low cost, and long durability, but it requires special equipment and software that may not be available during a disaster. A cloud backup is a type of backup that involves storing the data on remote servers or platforms that can be accessed over the internet using a web browser or an application. A cloud backup can provide online access to the data with high scalability, flexibility, and security, but it requires network connectivity and bandwidth that may not be available during a disaster. A disk backup is a type of backup that involves storing the data on hard disk drives or solid state drives that can be accessed using a computer or a device. A disk backup can provide online or offline access to the data with high performance, reliability, and portability, but it requires compatible hardware and software that may not be available during a disaster. References:
https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/
https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable-devices-and-individua
https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard-drive-in-under-an-hour/
https://www.howtogeek.com/202794/what-is-the-difference-between-127
質問 # 137
An administrator is tasked with building an environment consisting of four servers that can each serve the same website. Which of the following concepts is described?
- A. Overprovisioning
- B. Load balancing
- C. Network teaming
- D. Direct access
正解：B
解説：
Load balancing is a method used to distribute incoming network traffic across multiple servers. In this scenario, the administrator is tasked with ensuring that all four servers can serve the same website, which is a typical use case for load balancing.
* Load balancing (Answer A): Distributes web traffic across multiple servers to ensure availability and reliability.
* Direct access (Option B): Refers to client devices connecting directly to a network resource, unrelated to the described scenario.
* Overprovisioning (Option C): Refers to allocating more resources than are currently needed, not relevant to load distribution.
* Network teaming (Option D): Involves combining multiple network interfaces for redundancy or increased throughput but doesn't address server distribution.
CompTIA Server+ Reference:This topic is covered under SK0-005 Objective 1.4: Explain networking concepts for server environments.
質問 # 138
A server administrator wants to check the open ports on a server. Which of the following commands should the administrator use to complete the task?
- A. nslookup
- B. netstat -a
- C. nbtstat
- D. telnet
正解：B
解説：
netstat is a command-line tool that displays network connections, routing tables, interface statistics, and more.
The -a option shows all listening and non-listening sockets on the server. This can help check the open ports on a server and identify any unwanted or malicious connections. References: https://docs.microsoft.com/en-us
/windows-server/administration/windows-commands/netstat
質問 # 139
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 UPS batteries were overcharged.
- C. The power supplies were not cross-connected
- D. Redundant power supplies require 220V power
正解：A
解説：
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 References: [Redundant Power Supply Best Practices]
質問 # 140
Which of the following should be configured in pairs on a server to provide network redundancy?
- A. MRU
- B. NIC
- C. CPU
- D. SCP
- E. DLP
正解：B
解説：
Explanation
NIC stands for network interface card, which is a hardware component that allows a server to connect to a network. Configuring NICs in pairs on a server would provide network redundancy, meaning that if one NIC fails, the other one can take over and maintain network connectivity. The other options are not related to network redundancy.
質問 # 141
A technician recently replaced a NIC that was not functioning. Since then, no device driver is found when starting the server, and the network card is not functioning. Which of the following should the technician check first?
- A. The HCL
- B. The BIOS
- C. The boot log
- D. The event log
正解：A
解説：
Explanation
The technician should check the hardware compatibility list (HCL) first to see if the new NIC is supported by the server's operating system. The HCL is a list of hardware devices that have been tested and verified to work with a specific operating system. If the NIC is not on the HCL, it means that there is no device driver available or compatible for it, and the NIC will not function properly.
References: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 5, Lesson 5.2, Objective 5.2
質問 # 142
After configuring IP networking on a newly commissioned server, a server administrator installs a straight- through network cable from the patch panel to the switch. The administrator then returns to the server to test network connectivity using the ping command. The partial output of the ping and ipconfig commands are displayed below:
The administrator returns to the switch and notices an amber link light on the port where the server is connected. Which of the following is the MOST likely reason for the lack of network connectivity?
- A. Network port security
- B. A misconfigured NIC on the server
- C. An improper VLAN configuration
- D. A misconfigured DHCP server
正解：B
質問 # 143
A server administrator is reviewing the following specifications:
VM01 Host:
CPU: 2 Physical, 4 Cores
RAM: 16GB
Storage: 16TB
Server 1 on VM01:
CPU: 1 virtual socket, 1 core per socket
RAM: 4GB
Storage: 8TB
Server 2 on VM01:
CPU: 2 virtual sockets, 2 cores per socket
RAM: 8GB
Storage: 10TB
Which of the following is described given these specifications?
- A. Scalability
- B. Host vs. guest
- C. Overprovisioning
- D. Virtual switch
正解：C
解説：
Overprovisioning is a situation where the allocated resources for a virtual machine exceed the available resources of the physical host. In this case, the storage allocated for Server 1 and Server 2 on VM01 is 8TB and 10TB respectively, which adds up to 18TB. However, the storage available on the VM01 host is only 16TB, which means there is a 2TB deficit. This can cause performance issues and errors for the virtual machines.
References:
CompTIA Server+ Certification Exam Objectives1, page 8
Server Management: Server Hardware Installation and Management, Module 2, Lesson 5
質問 # 144
A security analyst suspects a remote server is running vulnerable network applications. The analyst does not have administrative credentials for the server. Which of the following would MOST likely help the analyst determine if the applications are running?
- A. A sniffer
- B. Anti-malware
- C. A port scanner
- D. User account control
正解：C
解説：
Explanation
A port scanner is the tool that would most likely help the analyst determine if the applications are running on a remote server. A port scanner is a software tool that scans a network device for open ports. Ports are logical endpoints for network communication that are associated with specific applications or services. By scanning the ports on a remote server, the analyst can identify what applications or services are running on that server and what protocols they are using. A port scanner can also help detect potential vulnerabilities or misconfigurations on a server.
質問 # 145
Hosting data in different regional locations but not moving it for long periods of time describes:
- A. data at rest.
- B. off-site storage.
- C. on-site retention.
- D. a cold site.
正解：A
質問 # 146
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. SFP
- C. SFP+
- D. 10 GigE
正解：A
解説：
QSFP+ (Quad Small Form-Factor Pluggable Plus): This transceiver type is designed specifically to handle 40Gbps network speeds. QSFP+ connectors are hot-swappable and support various cable types, including fiber optic and copper (DAC).
10GigE: While a valid network technology, 10GigE only supports up to 10Gbps, not the required 40Gbps.
SFP (Small Form-factor Pluggable): A common transceiver type, but the standard SFP only supports a maximum of 1Gbps.
SFP+ (Enhanced Small Form-factor Pluggable): Supports up to 10Gbps, not sufficient for 40Gbps in this scenario.
Reference:
CompTIA Server+ Objectives (Exam codes SK0-004 or SK0-005): Search for sections on networking standards and transceiver types.
質問 # 147
An administrator recommends using a tower server in a small remote office. Which of the following should be added to the server to ensure continuous server operation?
- A. UPS
- B. Surge protector
- C. PDU
- D. Ground strap
正解：A
質問 # 148
A server administrator is configuring a new server that will hold large amounts of information. The server will need to be accessed by multiple users at the same time. Which of the following server roles will the administrator MOST likely need to install?
- A. Application
- B. Messaging
- C. Database
- D. Print
正解：C
解説：
Explanation
Few people are expected to use the database at the same time and users don't need to customize the design of the database.
質問 # 149
A virtual host has four NICs and eight VMs. Which of the following should the technician configure to enable uplink redundancy?
- A. VM
- B. vSwitch
- C. vHBA
- D. vCPU
- E. vNIC
正解：B
解説：
Uplink redundancy is a method used to ensure that if one physical network interface card (NIC) fails, the network connectivity for the virtual machines (VMs) does not go down. This is typically achieved by configuring multiple NICs to connect to a single virtual switch (vSwitch) and setting up NIC teaming or bonding. The vSwitch manages the internal network traffic between the VMs and the outside network by using the physical NICs assigned to it. By configuring the vSwitch with multiple NICs, you can create redundancy, so if one NIC fails, the other NICs can take over the traffic, ensuring continuous network connectivity.
質問 # 150
A technician is attempting to resolve an issue with a file server that is unable to download a file Given the following output:
Which of the following would best allow this file to be read?
- A. sestatus
- B. chown
- C. chmod
- D. getenforce
- E. setenforce
正解：C
解説：
The given output in the image indicates that the file is present, but the permissions may not allow it to be read.
The output indicates '-rw-------', which means that the file is set to be readable and writable by the owner only, with no permissions for group or others. To allow the file to be read by users other than the owner, the file's permissions will need to be changed. The chmod (change mode) command is used to change the file's permissions in Linux. For example, chmod 644 file would change the permissions of the file to be readable by everyone and writable by the owner, which is typically what's required for a file server. It is always recommended to apply the least permissive settings that still allow the required operation to maintain security.
質問 # 151
Which of the following would a systems administrator most likely implement to encrypt data in transit for remote administration?
- A. Telnet
- B. rlogin
- C. TFTP
- D. SSH
正解：D
解説：
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.
質問 # 152
Which of the following documents would explain the consequences of server downtime?
- A. Disaster recovery plan
- B. Business impact analysis
- C. Service-level agreement
- D. Business continuity plan
正解：B
解説：
A business impact analysis (BIA) is a document that outlines the potential effects of downtime on business operations. It identifies critical business functions and estimates the impact of disruption on the organization's ability to function.
* Business impact analysis (Answer D): This document is specifically designed to assess the consequences of downtime and other disruptions.
* Service-level agreement (Option A): Defines the expected level of service between a provider and a client but doesn't directly explain downtime consequences.
* Business continuity plan (Option B): Outlines how the business will continue operating during a disruption but doesn't focus solely on the consequences of downtime.
* Disaster recovery plan (Option C): Focuses on restoring systems after a disaster but doesn't outline the specific impact of downtime.
CompTIA Server+ Reference:This topic relates to SK0-005 Objective 4.1: Explain disaster recovery concepts.
質問 # 153
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