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| Section | Weight | Objectives |
|---|---|---|
| Troubleshooting | 28% | - Troubleshooting methodology
|
| Server Administration | 30% | - Operating system management
|
| Security and Disaster Recovery | 24% | - Server security
|
| Server Hardware Installation and Management | 18% | - Physical installation and maintenance
|
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質問 # 138
Which of the following encryption methodologies would MOST likely be used to ensure encrypted data cannot be retrieved if a device is stolen?
正解：C
解説：
Explanation
Encryption at rest is a type of encryption methodology that would most likely be used to ensure encrypted data cannot be retrieved if a device is stolen. Encryption at rest is a process of encrypting stored data on a device such as a hard drive, SSD, USB flash drive, or mobile device. This way, if the device is lost or stolen, the data cannot be accessed without the encryption key or password. Encryption at rest can be implemented using software tools such as BitLocker on Windows or FileVault on Mac OS, or hardware features such as self-encrypting drives or Trusted Platform Module chips. End-to-end encryption is a type of encryption methodology that ensures encrypted data cannot be intercepted or modified by third parties during transmission over a network. Encryption in transit is a type of encryption methodology that protects encrypted data while it is moving from one location to another over a network. Public key encryption is a type of encryption algorithm that uses a pair of keys: a public key that can be shared with anyone and a private key that is kept secret by the owner. References:
https://www.howtogeek.com/196541/bitlocker-101-what-it-is-how-it-works-and-how-to-use-it/
https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable-devices-and-individua
https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/
https://www.howtogeek.com/195877/what-is-encryption-and-how-does-it-work/
質問 # 139
A systems administrator recently upgraded the memory in a server, and now the server does not turn on, and nothing is displayed on the screen.
Which of the following is the next step the administrator should take to diagnose the error without opening the machine?
正解：A
解説：
Explanation
A power-on self-test (POST) is a diagnostic process that runs when a server is turned on to check the basic functionality of the hardware components and report any errors or faults. A POST code is a series of beeps or flashes that indicate the status of the POST process and identify any problems that prevent the server from booting up. A POST code can be heard through a speaker or seen on a display attached to the server motherboard. A POST code is useful for diagnosing errors without opening the machine or using any software tools.
References: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 5, Lesson 5.1, Objective 5.1
質問 # 140
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?
正解：A
解説：
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.
質問 # 141
A user is unable to modify files on a Windows fileshare. A technician examines the system and determines the user is a member of Group A. Group A was granted full control over the files.
Which of the following is MOST likely causing the access issues?
正解：D
解説：
Share Permissions
When a resource is shared over a network, it can be assigned Read, Change, Full Control, or Deny permissions on the share. Windows supports user-level security; users have permissions depending upon who they are. Share permissions only protect the resource from access over the network. Local access can only be secured by NTFS permissions.
質問 # 142
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?
正解：A
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 # 143
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