SK0-005 server-administration — All Questions With Answers

Question 1

A server administrator is tasked with ensuring that a critical database server remains available in the event of a hardware failure. The solution must provide automatic failover with minimal administrative overhead. Which of the following should be implemented?

Accepted Answer

Server clustering. Server clustering provides automatic failover between nodes, ensuring high availability with minimal administrative overhead. RAID 1 offers disk redundancy but not server-level failover. Load balancing distributes traffic but does not automatically redirect if a server fails. Scheduled backups restore data after a failure but do not prevent downtime.

Answer

Load balancing

Answer

Scheduled backups

Answer

RAID 1 mirroring

Question 2

Which TWO of the following are considered best practices for securing a server's remote management access?

Accepted Answer

Use SSH key-based authentication. Using SSH key-based authentication provides strong encryption and eliminates password theft risks. Disabling unused services reduces the attack surface. Enabling default administrative shares increases exposure. Allowing all inbound ICMP can facilitate reconnaissance. Telnet sends data in plaintext and is insecure.

Answer

Enable default administrative shares

Answer

Allow all inbound ICMP

Answer

Use telnet for remote CLI

Question 3

Your organization is migrating a Windows Server 2019 file server with 2 TB of shared data to a new server running Windows Server 2022. The migration must minimize user downtime and ensure file permissions are preserved. Users access files during business hours (8 AM to 6 PM) and the migration must be completed within a four-hour window starting at 10 PM on Saturday. You plan to use DFS Replication (DFSR) for initial data copy and then perform a final synchronization during the cutover. After setting up DFSR between the old and new servers, you realize that the initial replication will take approximately 12 hours due to the large number of files. What should you do to complete the migration within the allowed window?

Accepted Answer

Use robocopy to pre-stage the data from old to new server during off-hours before the cutover, then enable DFSR to replicate only changes made after pre-staging; during the cutover window, do a final DFSR sync. Option C is correct because pre-staging data using robocopy with appropriate flags (copying security and attributes) and then enabling DFSR for the delta changes is a best practice for large migrations. Option A is wrong because simply increasing DFSR bandwidth does not reduce the time needed for initial replication of 2 TB. Option B is wrong because using robocopy alone during the cutover window may not complete within four hours if you need to copy all data; pre-staging is required. Option D is wrong because performing a full backup and restore during the window is too time-consuming for 2 TB.

Answer

Disable DFSR and use robocopy with /MIR /COPYALL during the cutover window to copy all data

Answer

Perform a full backup of the old server and restore to the new server during the cutover window using Windows Backup

Answer

Increase the DFSR staging quota and bandwidth throttling to accelerate initial replication

Question 4

A technician is installing a new server for a department. The server will run a single application that requires high reliability. The operating system should be protected against a single disk failure without sacrificing read performance. Which RAID configuration is MOST appropriate?

Accepted Answer

RAID 1. Option D is correct because RAID 1 mirrors the OS drive, providing fault tolerance and good read performance. Option A (RAID 0) has no redundancy. Option B (RAID 5) requires at least three disks and has write penalty. Option C (RAID 6) requires at least four disks and is overkill for a simple OS mirror.

Answer

RAID 5

Answer

RAID 6

Answer

RAID 0

Question 5

A SQL Server database administrator wants to backup a large database (500 GB) with minimal impact on transaction log growth and recovery time. Which TWO backup strategies should the administrator implement? (Choose two.)

Accepted Answer

Perform weekly full backups. Options A and D are correct. A: A full backup copies the entire database, and is needed as a base. D: Transaction log backups control log growth and allow point-in-time recovery. Option B is wrong because differential backups depend on a recent full backup. Option C is wrong because copy-only backups do not affect the log sequence, but they don't control log growth. Option E is wrong because tail-log backups are taken just before disaster recovery, not regularly.

Answer

Perform a tail-log backup before each full backup

Answer

Perform daily differential backups

Answer

Perform hourly copy-only backups

Question 6

A company operates a Windows Server 2019 machine that functions as a domain controller and file server. Over the past week, the server has randomly rebooted several times, often during periods of heavy file access. The administrator reviews the System event log and finds multiple Event ID 41 (Kernel-Power) entries with no preceding critical errors. The server is connected to an uninterruptible power supply (UPS) that reports stable input voltage. The server room temperature sensors indicate normal ambient temperature (22°C / 72°F). The server hardware is three years old and has not had any recent changes. The administrator has already run a full antivirus scan with no threats found. Which of the following should the administrator do NEXT to diagnose the issue?

Accepted Answer

Inspect and clean the CPU and chassis fans, and check for dust buildup. Option C is correct because random reboots with Kernel-Power 41 often indicate overheating due to failing fans or dust buildup, even if ambient temperature is normal. Option A is wrong because the power supply is likely not the issue given the UPS stability. Option B is wrong because a BIOS update is unlikely to solve hardware overheating. Option D is wrong because disabling automatic restart only hides the symptom and does not prevent the reboots.

Answer

Update the server's BIOS to the latest version

Answer

Replace the power supply unit

Answer

Disable the automatic restart feature in System Properties

Question 7

A company is migrating a legacy line-of-business application from Windows Server 2012 R2 to a new Windows Server 2022 server that is a member of an Active Directory domain. The application runs as a Windows service under a domain service account named CORP\svc_app. The service account has been granted the 'Log on as a service' user right on the old server, and the application is configured to listen on a static TCP port 8443. After installing the application on the new server and configuring it with the same service account and port, the application fails to start. The administrator checks the Windows Event Viewer and sees two errors in the System log: 'The CORP\svc_app service failed to start due to the following error: The service did not start due to a logon failure' and 'The service cannot bind to the designated port 8443'. The administrator has already verified that the service account's password is correct and has not expired, that the account is enabled, that the port 8443 is not being used by another service, and that the Windows Firewall has an inbound rule allowing traffic on port 8443. The application's configuration file correctly points to port 8443. What should the administrator do to resolve the issue?

Accepted Answer

Grant the 'Log on as a service' user right to the CORP\svc_app account via Local Security Policy or Group Policy.. The correct answer is B. The 'Log on as a service' user right is a security policy setting that must be explicitly assigned to a service account on each individual server. Even though the account had this right on the old server, it does not automatically carry over to the new server. Without this right, the service cannot start, and the 'logon failure' error is a classic symptom. Option A is incorrect because the password was already verified as correct. Option C is incorrect because the application requires a static port (port 8443) and changing to a dynamic port would break client connectivity. Option D is incorrect because restarting the server does not assign the missing user right and will not resolve the logon failure.

Answer

Restart the Windows Server 2022 server to apply any pending policy changes.

Answer

Configure the application to use a dynamic port instead of the static port 8443.

Answer

Reset the service account password and update the service configuration.

Question 8

A system administrator is configuring a backup schedule for a critical database server that must be available 24/7. The company's recovery point objective (RPO) is 1 hour and recovery time objective (RTO) is 4 hours. The database files change frequently, but the operating system and application binaries rarely change. Which of the following backup strategies would BEST meet these requirements while minimizing storage and backup window impact?

Accepted Answer

Full backup daily, incremental backup every hour. Option D is correct because daily full backups provide a recent recovery base, and hourly incremental backups are small and fast, meeting the 1-hour RPO with minimal backup window. Restoration applies at most 24 incrementals to the latest full, which fits within the 4-hour RTO. Option A is wrong because weekly full backups with hourly incrementals may require restoring too many incrementals, risking the RTO. Option B is wrong because hourly differential backups grow in size throughout the day, increasing backup time and storage. Option C is wrong because weekly fulls with hourly differentials cause exponential growth in differential size over the week.

Answer

Full backup daily, differential backup every hour

Answer

Full backup weekly, differential backup every hour

Answer

Full backup weekly, incremental backup every hour

Question 9

Refer to the exhibit. An administrator receives reports that a web application is returning HTTP 502 errors. The administrator examines the Nginx error log on the reverse proxy server and sees the following. Which of the following is MOST likely causing the errors?

Accepted Answer

The upstream server at 10.0.1.25:8080 refuses connections.. Option A is correct because the error 'Connection refused' indicates the upstream server (10.0.1.25:8080) is not accepting connections, typically because the backend service is down or the port is closed. Option B is incorrect because if Nginx were not running, no such log entry would be generated. Option C is incorrect because the client's DNS resolution is not involved after Nginx has already attempted to contact the upstream IP. Option D is incorrect because a firewall blocking outbound connections would cause a timeout, not a 'Connection refused' message.

Answer

The Nginx service is not running.

Answer

The firewall on the reverse proxy is blocking port 80.

Answer

The client's DNS cannot resolve example.com.

Question 10

To comply with company security policies, a server administrator must disable all unnecessary services on a newly deployed Windows Server 2019. The server will only act as a file server with no web hosting role. Which service should be disabled?

Accepted Answer

World Wide Web Publishing Service. Option C is correct because the World Wide Web Publishing Service (W3SVC) is part of IIS and is not required for a file server role. Leaving it running increases the attack surface. Option A (DNS Server) might be used if the server provides name resolution, but it is not mentioned. Option B (DHCP Server) is also not specified as needed. Option D (Server service) is essential for file sharing and should not be disabled.

Answer

DHCP Server service

Answer

Server service

Answer

DNS Server service

Question 11

Refer to the exhibit. A Linux server is reporting slow I/O on the root filesystem. Which of the following actions should the administrator take to resolve the immediate storage bottleneck?

Accepted Answer

Move non-essential data from / to /backup.. Option B is correct because moving non-essential data from the nearly full root filesystem to /backup (which has ample space) quickly alleviates the space shortage and I/O pressure. Option A is wrong because resizing /dev/sda1 may require downtime and complex partitioning operations; it is not an immediate fix. Option C is wrong because deleting log files may free some space but might also delete valuable diagnostic data and may not be sufficient. Option D is wrong because changing the RAID level of /dev/sda is a fundamental hardware change that does not address the immediate space issue and could be destructive.

Answer

Delete log files in /var/log.

Answer

Resize /dev/sda1 to 30G.

Answer

Change the RAID level of /dev/sda.

Question 12

A user attempts to access a shared folder named \Server\Finance. The share permissions are set to 'Everyone – Full Control'. The NTFS permissions on the folder grant the user 'Read & Execute' but deny 'Write'. What is the user's effective permission when accessing the share over the network?

Accepted Answer

Read & Execute. When share and NTFS permissions combine, the most restrictive of the two applies. Share gives Full Control, NTFS gives Read & Execute, so effective access is Read & Execute.

Answer

Full Control

Answer

Write

Answer

No Access

Question 13

Refer to the exhibit. A server administrator configured iptables rules on a Linux server. Immediately afterward, they are unable to connect to the server via SSH. The output of 'iptables -L INPUT -n' is shown. What is the most likely cause of the connectivity issue?

Accepted Answer

The DROP rule for port 22 appears before the ACCEPT rule, causing all SSH packets to be dropped.. iptables processes rules in order. The DROP rule for destination port 22 appears before the ACCEPT rule, so all incoming SSH packets are dropped before the ACCEPT rule can permit new connections.

Answer

The last DROP rule blocks all traffic, including established SSH sessions.

Answer

The default INPUT policy is set to ACCEPT, allowing all traffic.

Answer

The ACCEPT rule for port 22 is missing the ESTABLISHED state, preventing return traffic.

Question 14

An administrator needs to remotely manage several Linux servers securely without using passwords. Which of the following is the BEST method?

Accepted Answer

Use SSH with key-based authentication.. Option C is correct because SSH with key-based authentication provides strong, password-less remote access. Option A is wrong because RDP is primarily used on Windows, not typical for Linux. Option B is wrong because Telnet is insecure, and SSH tunneling does not make Telnet secure. Option D is wrong because VNC is less secure and not designed for efficient server administration.

Answer

Use Telnet with SSH tunneling.

Answer

Use VNC with a strong password.

Answer

Use RDP with certificate-based authentication.

Question 15

A server administrator notices that a database server is experiencing high CPU usage at specific times of the day. After checking logs, the administrator finds that a report generation task scheduled at those times is causing the issue. The task cannot be rescheduled or optimized further. Which of the following actions should the administrator take to ensure the server remains responsive for other applications during peak usage?

Accepted Answer

Configure the task to run at a lower priority.. Option D is correct because lowering the priority (nice value) of the task allows other processes to utilize the CPU without being blocked. Option A is wrong because adding vCPUs does not guarantee other processes will get CPU time if the task consumes all available cycles. Option B is wrong because processor affinity only pins a process to a specific CPU core but does not change its scheduling priority. Option C is wrong because replacing hardware is not immediate and may not solve scheduling contention.

Answer

Add more virtual CPUs to the server's VM.

Answer

Move the database to a server with faster CPU cores.

Answer

Configure processor affinity to dedicate a core to the database process.

Question 16

A company is planning to deploy a new web application on multiple servers behind a load balancer. The application requires consistent session data across all servers for seamless user experience. Which of the following solutions would BEST meet this requirement?

Accepted Answer

Store session data in a shared, high-performance in-memory data store like Redis.. Option B is correct because a shared in-memory data store like Redis provides low-latency access to session data for all servers, ensuring consistency and high availability. Option A is wrong because round-robin DNS does not handle session persistence. Option C is wrong because sticky sessions tie a user to one server; if that server fails, the session is lost and consistency is not maintained across servers. Option D is wrong because synchronous database replication adds latency and complexity, making it less suitable for high-performance web applications.

Answer

Configure each web server to store sessions locally and use sticky sessions on the load balancer.

Answer

Use round-robin DNS to distribute traffic.

Answer

Implement database session storage with synchronous replication between servers.

Question 17

A server administrator receives an alert that a critical server's disk is almost full. Upon investigation, the administrator finds a large log file that has grown significantly. The log file is rotated daily, but today's rotation failed. Which command should the administrator use FIRST to free up space immediately?

Accepted Answer

> /var/log/large.log to truncate the file.. Option A is correct because truncating the file to zero size instantly reclaims disk space without removing the file, which could cause issues if processes still have it open. Option B is wrong because deleting the file will not free space if any process holds an open file handle. Option C is wrong because moving the file has similar issues as deletion. Option D is wrong because running logrotate might fail if the disk is full or if the rotation script is broken; truncation is quicker and safer under pressure.

Answer

logrotate -f /etc/logrotate.conf to force log rotation.

Answer

rm -rf /var/log/large.log to delete the file.

Answer

mv /var/log/large.log /backup/ to move the file.

Question 18

A server administrator configures a scheduled task to back up a database using a command-line tool. The task runs successfully when executed manually, but fails when run via the task scheduler. The log shows 'Error: Access denied.' What is the MOST likely cause?

Accepted Answer

The scheduled task is running under the wrong user account.. Option C is correct because 'Access denied' usually points to permission issues; the task scheduler may run under a different user account that lacks necessary privileges. Option A is wrong because a full destination would yield a 'disk full' error, not access denied. Option B is wrong because if the tool were not installed, the error would be 'command not found.' Option D is wrong because a stopped database service would produce a connection error, not access denied.

Answer

The database service is stopped.

Answer

The command-line tool is not installed.

Answer

The backup destination is full.

Question 19

A medium-sized business runs a critical internal application on a single physical server running Windows Server 2019. The application is memory-intensive, often using up to 24 GB out of 32 GB RAM during peak hours. Over the past week, the server has experienced three unexpected reboots, each occurring during peak load. The server is not part of a cluster, and all data is stored on local disks. You have checked the Windows System event log and found Event ID 41 (Kernel-Power) indicating an unexpected shutdown. There are no related critical errors in the Application log. You have also reviewed the server's firmware logs and found multiple corrected memory errors (ECC) over the last month, with an increase in frequency just before each crash. The server is under warranty, and the hardware vendor's diagnostic tools report a failing memory module in DIMM slot A1. The vendor has recommended replacing the faulty DIMM immediately. However, the server is currently processing critical end-of-quarter financial reports that cannot be interrupted for at least 6 hours. Which of the following is the BEST course of action to minimize risk of data loss and downtime until a planned maintenance window?

Accepted Answer

Inform management of the criticality, request emergency approval for immediate maintenance, and if denied, ensure current backups are verified and monitor the server closely for any signs of degradation until the maintenance window.. Option D is correct because it follows proper change management: informing stakeholders, seeking emergency approval if needed, and mitigating risk by verifying backups and monitoring. Option A is wrong because immediately shutting down would interrupt critical processing and potential data loss, without management approval. Option B is wrong because Windows Memory Diagnostic is a boot-time tool and cannot effectively isolate memory regions to avoid crashes on a running production system. Option C is wrong because the server has already crashed, indicating uncorrectable errors; continuing without action risks data corruption and further unplanned outages.

Answer

Use Windows Memory Diagnostic tool to try to isolate the memory region and prevent the application from using it.

Answer

Continue running the server as is, as ECC memory can correct errors and the server will only crash if errors are uncorrectable; the risk is low.

Answer

Immediately shut down the server, replace the faulty DIMM, and restart.

Question 20

A system administrator is notified that a server with a RAID 5 array of four 2TB drives has a single failed drive. The server uses hot-swappable drives and a hardware RAID controller. Which of the following actions should the administrator perform FIRST?

Accepted Answer

Replace the failed drive and allow the array to rebuild.. Option A (Replace the failed drive and allow the array to rebuild) is correct because with a hot-spare, the array can rebuild automatically after replacing the failed drive, minimizing data vulnerability. Option B (Perform a full backup) is prudent but not immediate; the array is still functional in degraded mode. Option C (Reboot the server and access the RAID controller BIOS) delays recovery and may cause unnecessary downtime. Option D (Replace all drives to increase storage) is unnecessary and wasteful.

Answer

Replace all four drives with larger capacity drives to expand storage.

Answer

Reboot the server and enter the RAID controller BIOS to mark the drive as offline.

Answer

Perform a full backup of the array before taking any action.

SK0-005 server-administration — All Questions With Answers

A server administrator is tasked with ensuring that a critical database server remains available in the event of a hardware failure. The solution must provide automatic failover with minimal administrative overhead. Which of the following should be implemented?

Which TWO of the following are considered best practices for securing a server's remote management access?

A technician is installing a new server for a department. The server will run a single application that requires high reliability. The operating system should be protected against a single disk failure without sacrificing read performance. Which RAID configuration is MOST appropriate?

A SQL Server database administrator wants to backup a large database (500 GB) with minimal impact on transaction log growth and recovery time. Which TWO backup strategies should the administrator implement? (Choose two.)

Refer to the exhibit. An administrator receives reports that a web application is returning HTTP 502 errors. The administrator examines the Nginx error log on the reverse proxy server and sees the following. Which of the following is MOST likely causing the errors?

Exhibit

To comply with company security policies, a server administrator must disable all unnecessary services on a newly deployed Windows Server 2019. The server will only act as a file server with no web hosting role. Which service should be disabled?

Refer to the exhibit. A Linux server is reporting slow I/O on the root filesystem. Which of the following actions should the administrator take to resolve the immediate storage bottleneck?

Exhibit

A user attempts to access a shared folder named \\Server\Finance. The share permissions are set to 'Everyone – Full Control'. The NTFS permissions on the folder grant the user 'Read & Execute' but deny 'Write'. What is the user's effective permission when accessing the share over the network?

Refer to the exhibit. A server administrator configured iptables rules on a Linux server. Immediately afterward, they are unable to connect to the server via SSH. The output of 'iptables -L INPUT -n' is shown. What is the most likely cause of the connectivity issue?

An administrator needs to remotely manage several Linux servers securely without using passwords. Which of the following is the BEST method?

A company is planning to deploy a new web application on multiple servers behind a load balancer. The application requires consistent session data across all servers for seamless user experience. Which of the following solutions would BEST meet this requirement?

A server administrator configures a scheduled task to back up a database using a command-line tool. The task runs successfully when executed manually, but fails when run via the task scheduler. The log shows 'Error: Access denied.' What is the MOST likely cause?

A system administrator is notified that a server with a RAID 5 array of four 2TB drives has a single failed drive. The server uses hot-swappable drives and a hardware RAID controller. Which of the following actions should the administrator perform FIRST?

A company wants to protect its Microsoft SQL Server database with a backup strategy that provides point-in-time recovery up to every 15 minutes. The database is critical and runs on a dedicated server. Which backup schedule should be implemented?

An administrator needs to configure a critical web service on a Linux server to automatically restart if it crashes unexpectedly. The server uses systemd. Which of the following best accomplishes this goal?

Refer to the exhibit. A server administrator is troubleshooting a DNS resolution issue on a Windows Server 2019. The exhibit shows the output of the command `nslookup` queried against the server's own IP. Based on the output, what is the most likely cause of the resolution failure?

Exhibit

Refer to the exhibit. A server administrator encounters an authentication issue when accessing a web server. The exhibit shows an error from the Domain Controller's event log. What is the most likely cause of the problem?

Exhibit

A Linux server administrator notices that the /var partition is 95% full. To free space quickly, the administrator decides to delete old log files. Which of the following commands should the administrator use to find and delete log files older than 30 days in the /var/log directory?

A server hosts a database that requires nightly backups. The backup strategy uses a full backup every Sunday and differential backups on other days. On Wednesday, the server fails. Which backup sets are required to restore to the most recent state?

A server has two NICs configured in a team using LACP. The server loses network connectivity when one NIC is physically disconnected, even though both links show as active in the teaming software before the failure. What is the most likely cause of the issue?

Refer to the exhibit. A web server is running on port 80, but users are unable to connect. The administrator has confirmed the web server service is running. The output of iptables -L is shown. What is the most likely reason for the connectivity issue?

A server has a RAID 5 array with four drives. One drive fails and is replaced. During the rebuild, a second drive reports a media error and the rebuild fails. What should the administrator do FIRST to minimize the risk of permanent data loss?

SK0-005 server-administration — All Questions With Answers

A server administrator is tasked with ensuring that a critical database server remains available in the event of a hardware failure. The solution must provide automatic failover with minimal administrative overhead. Which of the following should be implemented?

Which TWO of the following are considered best practices for securing a server's remote management access?

A technician is installing a new server for a department. The server will run a single application that requires high reliability. The operating system should be protected against a single disk failure without sacrificing read performance. Which RAID configuration is MOST appropriate?

A SQL Server database administrator wants to backup a large database (500 GB) with minimal impact on transaction log growth and recovery time. Which TWO backup strategies should the administrator implement? (Choose two.)

Refer to the exhibit. An administrator receives reports that a web application is returning HTTP 502 errors. The administrator examines the Nginx error log on the reverse proxy server and sees the following. Which of the following is MOST likely causing the errors?

Exhibit

To comply with company security policies, a server administrator must disable all unnecessary services on a newly deployed Windows Server 2019. The server will only act as a file server with no web hosting role. Which service should be disabled?

Refer to the exhibit. A Linux server is reporting slow I/O on the root filesystem. Which of the following actions should the administrator take to resolve the immediate storage bottleneck?

Exhibit

A user attempts to access a shared folder named \\Server\Finance. The share permissions are set to 'Everyone – Full Control'. The NTFS permissions on the folder grant the user 'Read & Execute' but deny 'Write'. What is the user's effective permission when accessing the share over the network?

Refer to the exhibit. A server administrator configured iptables rules on a Linux server. Immediately afterward, they are unable to connect to the server via SSH. The output of 'iptables -L INPUT -n' is shown. What is the most likely cause of the connectivity issue?

An administrator needs to remotely manage several Linux servers securely without using passwords. Which of the following is the BEST method?

A company is planning to deploy a new web application on multiple servers behind a load balancer. The application requires consistent session data across all servers for seamless user experience. Which of the following solutions would BEST meet this requirement?

A server administrator configures a scheduled task to back up a database using a command-line tool. The task runs successfully when executed manually, but fails when run via the task scheduler. The log shows 'Error: Access denied.' What is the MOST likely cause?

A system administrator is notified that a server with a RAID 5 array of four 2TB drives has a single failed drive. The server uses hot-swappable drives and a hardware RAID controller. Which of the following actions should the administrator perform FIRST?

A company wants to protect its Microsoft SQL Server database with a backup strategy that provides point-in-time recovery up to every 15 minutes. The database is critical and runs on a dedicated server. Which backup schedule should be implemented?

An administrator needs to configure a critical web service on a Linux server to automatically restart if it crashes unexpectedly. The server uses systemd. Which of the following best accomplishes this goal?

Refer to the exhibit. A server administrator is troubleshooting a DNS resolution issue on a Windows Server 2019. The exhibit shows the output of the command `nslookup` queried against the server's own IP. Based on the output, what is the most likely cause of the resolution failure?

Exhibit

Refer to the exhibit. A server administrator encounters an authentication issue when accessing a web server. The exhibit shows an error from the Domain Controller's event log. What is the most likely cause of the problem?

Exhibit

A Linux server administrator notices that the /var partition is 95% full. To free space quickly, the administrator decides to delete old log files. Which of the following commands should the administrator use to find and delete log files older than 30 days in the /var/log directory?

A server hosts a database that requires nightly backups. The backup strategy uses a full backup every Sunday and differential backups on other days. On Wednesday, the server fails. Which backup sets are required to restore to the most recent state?

A server has two NICs configured in a team using LACP. The server loses network connectivity when one NIC is physically disconnected, even though both links show as active in the teaming software before the failure. What is the most likely cause of the issue?

Refer to the exhibit. A web server is running on port 80, but users are unable to connect. The administrator has confirmed the web server service is running. The output of iptables -L is shown. What is the most likely reason for the connectivity issue?

A server has a RAID 5 array with four drives. One drive fails and is replaced. During the rebuild, a second drive reports a media error and the rebuild fails. What should the administrator do FIRST to minimize the risk of permanent data loss?