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 misconfiguredNTP (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 underSK0-005 Objective 2.4: Troubleshoot common server problems.
A server administrator has received calls regarding latency and performance issues with a file server. After reviewing all logs and server features the administrator discovers the server came with four Ethernet ports, out only one port is currently in use. Which of the following features will enable the use of all available ports using a single IP address?
NIC teaming is a feature that allows the use of multiple network interface cards (NICs) as a single logical interface with a single IP address. It can improve the network performance, bandwidth, and redundancy of a server. Verified Reference: [NIC teaming], [Network interface card]
A storage administrator is configuring a new array to provide storage to a virtual cluster. The array has a built-in backup agent to allow data that is stored on the array to be backed up. The storage administrator wants the virtual cluster to use a file-based storage protocol so the backup agent can just back up the files that change and not the whole data store. Which of the following storage protocols should the administrator use?
Different storage protocols operate at different levels (file-based vs. block-based):
iSCSI (Internet Small Computer Systems Interface) is a block-level protocol, meaning that the storage appears as raw disk space to the operating system. Backups would require copying entire blocks, rather than specific files.
FC (Fibre Channel) is another block-level protocol used in high-performance SANs. It does not support file-based storage natively.
FCoE (Fibre Channel over Ethernet) extends FC over Ethernet but still functions as a block-based storage solution.
NFS (Network File System) is a file-based storage protocol, making it the best option. It allows direct access to files, which enables backup software to back up only modified files instead of the entire block device.
Since the administrator requires a file-based storage protocol to ensure efficient incremental backups, NFS is the correct choice.
A server administrator implemented a new backup solution and needs to configure backup methods for remote sites. These remote sites have low bandwidth and backups must not
interfere with the network during normal business hours. Which of the following methods can be used to meet these requirements? (Select two).
Archive is a method of storing historical data that is not frequently accessed or modified. Archive can reduce the amount of data that needs to be backed up and save bandwidth and storage space. Differential is a method of backing up only the data that has changed since the last full backup. Differential can also save bandwidth and storage space, as well as speed up the backup process.
CompTIA Server+ Certification Exam Objectives1, page 12
Server Management: Server Hardware Installation and Management2, Module 2, Lesson 5
A Linux server was recently updated. Now, the server stops during the boot process with a blank screen and ans> prompt. When of the following is the MOST likely cause of this issue?
The most likely cause of this issue is that the UEFI boot was interrupted by a missing Linux boot file, such as grub.cfg or vmlinuz, which are essential for loading the Linux kernel and booting the system. The s> prompt indicates that the system entered into UEFI Shell mode, which is a command-line interface for troubleshooting UEFI boot issues. The administrator can use UEFI Shell commands to locate and restore the missing boot file or change the boot order. Verified Reference: [UEFI Shell Guide]
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