CompTIA SK0-005 Q&A - in .pdf

  • Exam Code: SK0-005
  • Exam Name: CompTIA Server+ Certification Exam
  • Updated: May 29, 2026
  • Q & A: 492 Questions and Answers
  • Printable CompTIA SK0-005 PDF Format. It is an electronic file format regardless of the operating system platform.
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CompTIA SK0-005 Q&A - Testing Engine

  • Exam Code: SK0-005
  • Exam Name: CompTIA Server+ Certification Exam
  • Updated: May 29, 2026
  • Q & A: 492 Questions and Answers
  • Install on multiple computers for self-paced, at-your-convenience training.
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CompTIA SK0-005 Exam Syllabus Topics:

TopicDetails

Server Hardware Installation and Management - 18%

Given a scenario, install physical hardware.- Racking
  • Enclosure sizes
  • Unit sizes
    - 1U, 2U, 3U, etc.
  • Rack layout
    - Cooling management
    - Safety
    1. Proper lifting techniques
    2. Rack balancing
    3. Floor load limitations
    - Power distribution unit (PDU)
    - Keyboard-video-mouse (KVM) placement
    - Rail kits

- Power cabling

  • Redundant power
    - Uninterruptible power supply (UPS)
    - Separate circuits
    - Separate providers
  • Power connector types
  • Cable management

- Network cabling

  • Redundant networking
  • Twisted pair
  • Fiber
    - SC
    - LC
    - Single mode
    - Multimode
  • Gigabit
  • 10 GigE
  • Small form factor pluggable (SFP)
  • SFP+
  • Quad small form factor pluggable (QSFP)
  • Cable management

- Server chassis types

  • Tower
  • Rack mount
  • Blade enclosure

- Server components

  • Hardware compatibility list (HCL)
  • Central processing unit (CPU)
  • Graphics processing unit (GPU)
  • Memory
  • Bus types
  • Interface types
  • Expansion cards
Given a scenario, deploy and manage storage.- RAID levels and types
  • 0
  • 1
  • 5
  • 6
  • 10
  • Just a bunch of disks (JBOD)
  • Hardware vs. software

- Capacity planning
- Hard drive media types

  • Solid state drive (SSD)
    - Wear factors
    1. Read intensive
    2. Write intensive
  • Hard disk drive (HDD)
    - Rotations per minute (RPM)
    1. 15,000
    2. 10,000
    3. 7,200
  • Hybrid

- Interface types

  • Serial attached SCSI (SAS)
  • Serial ATA (SATA)
  • Peripheral component interconnect (PCI)
  • External serial advanced technology attachment (eSATA)
  • Universal serial bus (USB)
  • Secure digital (SD)

- Shared storage

  • Network attached storage (NAS)
    - Network file system (NFS)
    - Common Internet file system (CIFS)
  • Storage area network (SAN)
    - Internet small computer systems interface (iSCSI)
    - Fibre Channel
    - Fibre Channel over Ethernet (FCoE)
Given a scenario, perform server hardware maintenance.- Out-of-band management
  • Remote drive access
  • Remote console access
  • Remote power on/off
  • Internet protocol keyboard-video-mouse (IP KVM)

- Local hardware administration

  • Keyboard-video-mouse (KVM)
  • Crash cart
  • Virtual administration console
  • Serial connectivity
  • Console connections

- Components

  • Firmware upgrades

- Drives
- Hot-swappable hardware

  • Drives
  • Cages
  • Cards
  • Power supplies
  • Fans

- Basic input/output system (BIOS)/Unified Extensible Firmware Interface (UEFI)

Server Administration - 30%

Given a scenario, install server operating systems.- Minimum operating system (OS) requirements
- Hardware compatibility list (HCL)
- Installations
  • Graphical user interface (GUI)
  • Core
  • Bare metal
  • Virtualized
  • Remote
  • Slip streamed/unattended
    - Scripted installations
    - Additional drivers
    - Additional applications and utilities
    - Patches
  • Media installation type
    - Network
    - Optical
    - Universal serial bus (USB)
    - Embedded
  • Imaging
    - Cloning
    1. Virtual machine (VM) cloning
    2. Physical clones
    3. Template deployment
    4. Physical to virtual (P2V)

- Partition and volume types

  • Global partition table (GPT) vs. master boot record (MBR)
  • Dynamic disk
  • Logical volume management (LVM)

- File system types

  • ext4
  • New technology file system (NTFS)
  • VMware file system (VMFS)
  • Resilient file system (ReFS)
  • Z file system (ZFS)
Given a scenario, configure servers to use network infrastructure services.- IP configuration
- Virtual local area network (VLAN)
- Default gateways
- Name resolution
  • Domain name service (DNS)
  • Fully qualified domain name (FQDN)
  • Hosts file

- Addressing protocols

  • IPv4
    - Request for comments (RFC) 1918 address spaces
  • IPv6

- Firewall

  • Ports

- Static vs. dynamic

  • Dynamic host configuration protocol (DHCP)

- MAC addresses

Given a scenario, configure and maintain server functions and features.- Server roles requirements
  • Print
  • Database
  • File
  • Web
  • Application
  • Messaging
  • Baselining
    - Documentation
    - Performance metrics

- Directory connectivity
- Storage management

  • Formatting
  • Connectivity
  • Provisioning
  • Partitioning
  • Page/swap/scratch location and size
  • Disk quotas
  • Compression
  • Deduplication

- Monitoring

  • Uptime
  • Thresholds
  • Performance
    - Memory
    - Disk
    1. Input output operations per second (IOPS)
    2. Capacity vs. utilization
    - Network
    - Central processing unit (CPU)
  • Event logs
    - Configuration
    - Shipping
    - Alerting
    - Reporting
    - Retention
    - Rotation

- Data migration and transfer

  • Infiltration
  • Exfiltration
  • Disparate OS data transfer
    - Robocopy
    - File transfer
    - Fast copy
    - Secure copy protocol (SCP)

- Administrative interfaces

  • Console
  • Remote desktop
  • Secure shell (SSH)
  • Web interface
Explain the key concepts of high availability for servers.- Clustering
  • Active-active
  • Active-passive
  • Failover
  • Failback
  • Proper patching procedures
  • Heartbeat

- Fault tolerance

  • Server-level redundancy vs. component redundancy

- Redundant server network infrastructure

  • Load balancing
    - Software vs. hardware
    - Round robin
    - Most recently used (MRU)
  • Network interface card (NIC) teaming and redundancy
    - Failover
    - Link aggregation
Summarize the purpose and operation of virtualization.- Host vs. guest
- Virtual networking
  • Direct access (bridged)
  • Network address translation (NAT)
  • vNICs
  • Virtual switches

- Resource allocation and provisioning

  • CPU
  • Memory
  • Disk
  • NIC
  • Overprovisioning
  • Scalability

- Management interfaces for virtual machines
- Cloud models

  • Public
  • Private
  • Hybrid
Summarize scripting basics for server administration.- Script types
  • Bash
  • Batch
  • PowerShell
  • Virtual basic script (VBS)

- Environment variables
- Comment syntax
- Basic script constructs

  • Loops
  • Variables
  • Conditionals
  • Comparators

- Basic data types

  • Integers
  • Strings
  • Arrays

- Common server administration scripting tasks

  • Startup
  • Shut down
  • Service
  • Login
  • Account creation
  • Bootstrap
Explain the importance of asset management and documentation.- Asset management
  • Labeling
  • Warranty
  • Leased vs. owned devices
  • Life-cycle management
    - Procurement
    - Usage
    - End of life
    - Disposal/recycling
  • Inventory
    - Make
    - Model
    - Serial number
    - Asset tag

- Documentation management

  • Updates
  • Service manuals
  • Architecture diagrams
  • Infrastructure diagrams
  • Workflow diagrams
  • Recovery processes
  • Baselines
  • Change management
  • Server configurations
  • Company policies and procedures
    - Business impact analysis (BIA)
    - Mean time between failure (MTBF)
    - Mean time to recover (MTTR)
    - Recovery point objective (RPO)
    - Recovery time objective (RTO)
    - Service level agreement (SLA)
    - Uptime requirements

- Document availability
- Secure storage of sensitive documentation

Explain licensing concepts.- Models
  • Per-instance
  • Per-concurrent user
  • Per-server
  • Per-socket
  • Per-core
  • Site-based
  • Physical vs. virtual
  • Node-locked
  • Signatures

- Open source
- Subscription
- License vs. maintenance and support
- Volume licensing
- License count validation

  • True up

- Version compatibility

  • Backward compatible
  • Forward compatible

Security and Disaster Recovery - 24%

Summarize data security concepts.- Encryption paradigms
  • Data at rest
  • Data in transit

- Retention policies
- Data storage

  • Physical location storage
  • Off-site vs. on-site

- UEFI/BIOS passwords
- Bootloader passwords
- Business impact

  • Data value prioritization
  • Life-cycle management
  • Cost of security vs. risk and/or replacement
Summarize physical security concepts.- Physical access controls
  • Bollards
  • Architectural reinforcements
    - Signal blocking
    - Reflective glass
    - Datacenter camouflage
  • Fencing
  • Security guards
  • Security cameras
  • Locks
    - Biometric
    - Radio frequency identification (RFID)
    - Card readers
    - Mantraps
    - Safes

- Environmental controls

  • Fire suppression
  • Heating, ventilation, and cooling (HVAC)
  • Sensors
Explain important concepts pertaining to identity and access management for server administration.- User accounts
- User groups
- Password policies
  • Length
  • Lockout
  • Enforcement

- Permissions and access controls

  • Role-based
  • Rule-based
  • Scope based
  • Segregation of duties
  • Delegation

- Auditing

  • User activity
  • Logins
  • Group memberships
  • Deletions

- Multifactor authentication (MFA)

  • Something you know
  • Something you have
  • Something you are

- Single sign-on (SSO)

Explain data security risks and mitigation strategies.- Security risks
  • Hardware failure
  • Malware
  • Data corruption
  • Insider threats
  • Theft
    - Data loss prevention (DLP)
    - Unwanted duplication
    - Unwanted publication
  • Unwanted access methods
    - Backdoor
    - Social engineering
  • Breaches
    - Identification
    - Disclosure

- Mitigation strategies

  • Data monitoring
  • Log analysis
    - Security information and event management (SIEM)
  • Two-person integrity
    - Split encryption keys tokens
    - Separation of roles
  • Regulatory constraints
    - Governmental
    - Individually privileged information
    1. Personally identifiable information (PII)
    2. Payment Card Industry DataSecurity Standard (PCI DSS)
  • Legal considerations
    - Data retention
    - Subpoenas
Given a scenario, apply server hardening methods.- OS hardening
  • Disable unused services
  • Close unneeded ports
  • Install only required software
  • Apply driver updates
  • Apply OS updates
  • Firewall configuration

- Application hardening

  • Install latest patches
  • Disable unneeded services, roles, or features

- Host security

  • Antivirus
  • Anti-malware
  • Host intrusion detection system (HIDS)/Host intrusion prevention system (HIPS)

- Hardware hardening

  • Disable unneeded hardware
  • Disable unneeded physical ports, devices, or functions
  • Set BIOS password
  • Set boot order

- Patching

  • Testing
  • Deployment
  • Change management
Summarize proper server decommissioning concepts.- Proper removal procedures
  • Company policies
  • Verify non-utilization
  • Documentation
    - Asset management
    - Change management

- Media destruction

  • Disk wiping
  • Physical
    - Degaussing
    - Shredding
    - Crushing
    - Incineration
  • Purposes for media destruction

- Media retention requirements
- Cable remediation

  • Power
  • Networking

- Electronics recycling

  • Internal vs. external
  • Repurposing
Explain the importance of backups and restores.- Backup methods
  • Full
  • Synthetic full
  • Incremental
  • Differential
  • Archive
  • Open file
  • Snapshot

- Backup frequency
- Media rotation
- Backup media types

  • Tape
  • Cloud
  • Disk
  • Print

- File-level vs. system-state backup
- Restore methods

  • Overwrite
  • Side by side
  • Alternate location path

- Backup validation

  • Media integrity
  • Equipment
  • Regular testing intervals

- Media inventory before restoration

Explain the importance of disaster recovery.- Site types
  • Hot site
  • Cold site
  • Warm site
  • Cloud
  • Separate geographic locations

- Replication

  • Constant
  • Background
  • Synchronous vs. asynchronous
  • Application consistent
  • File locking
  • Mirroring
  • Bidirectional

- Testing

  • Tabletops
  • Live failover
  • Simulated failover
  • Production vs. non-production

Troubleshooting - 28%

Explain the troubleshooting theory and methodology.- Identify the problem and determine the scope.
  • Question users/stakeholders and identify changes to the server/environment.
  • Collect additional documentation/logs.
  • If possible, replicate the problem as appropriate.
  • If possible, perform backups before making changes.
  • Escalate, if necessary.

- Establish a theory of probable cause (question the obvious).

  • Determine whether there is a common element or symptom causing multiple problems.

- Test the theory to determine the cause.

  • Once the theory is confirmed, determine the next steps to resolve the problem.
  • If the theory is not confirmed, establish a new theory.

- Establish a plan of action to resolve the problem.

  • Notify impacted users.

- Implement the solution or escalate.

  • Make one change at a time and test/confirm the change has resolved the problem.
  • If the problem is not resolved, reverse the change, if appropriate, and implement a new change.

- Verify full system functionality and, if applicable, implement preventive measures.
- Perform a root cause analysis.
- Document findings, actions, and outcomes throughout the process.

Given a scenario, troubleshoot common hardware failures.- Common problems
  • Predictive failures
  • Memory errors and failures
    - System crash
    1. Blue screen
    2. Purple screen
    3. Memory dump
    - Utilization
    - Power-on self-test (POST) errors
    - Random lockups
    - Kernel panic
  • Complementary metal-oxide-semiconductor (CMOS) battery failure
  • System lockups
  • Random crashes
  • Fault and device indication
    - Visual indicators
  • Light-emitting diode (LED)
  • Liquid crystal display (LCD) panel readouts
    - Auditory or olfactory cues
    - POST codes
  • Misallocated virtual resources

- Causes of common problems

  • Technical
    - Power supply fault
    - Malfunctioning fans
    - Improperly seated heat sink
    - Improperly seated cards
    - Incompatibility of components
    - Cooling failures
    - Backplane failure
    - Firmware incompatibility
    - CPU or GPU overheating
  • Environmental
    - Dust
    - Humidity
    - Temperature

- Tools and techniques

  • Event logs
  • Firmware upgrades or downgrades
  • Hardware diagnostics
  • Compressed air
  • Electrostatic discharge (ESD) equipment
  • Reseating or replacing components and/or cables
Given a scenario, troubleshoot storage problems.- Common problems
  • Boot errors
  • Sector block errors
  • Cache battery failure
  • Read/write errors
  • Failed drives
  • Page/swap/scratch file or partition
  • Partition errors
  • Slow file access
  • OS not found
  • Unsuccessful backup
  • Unable to mount the device
  • Drive not available
  • Cannot access logical drive
  • Data corruption
  • Slow I/O performance
  • Restore failure
  • Cache failure
  • Multiple drive failure

- Causes of common problems

  • Disk space utilization
    - Insufficient disk space
  • Misconfigured RAID
  • Media failure
  • Drive failure
  • Controller failure
  • Hot bus adapter (HBA) failure
  • Loose connectors
  • Cable problems
  • Misconfiguration
  • Corrupt boot sector
  • Corrupt filesystem table
  • Array rebuild
  • Improper disk partition
  • Bad sectors
  • Cache battery failure
  • Cache turned off
  • Insufficient space
  • Improper RAID configuration
  • Mismatched drives
  • Backplane failure

- Tools and techniques

  • Partitioning tools
  • Disk management
  • RAID and array management
  • System logs
  • Disk mounting commands
    - net use
    - mount
  • Monitoring tools
  • Visual inspections
  • Auditory inspections
Given a scenario, troubleshoot common OS and software problems.- Common problems
  • Unable to log on
  • Unable to access resources
  • Unable to access files
  • System file corruption
  • End of life/end of support
  • Slow performance
  • Cannot write to system logs
  • Service failures
  • System or application hanging
  • Freezing
  • Patch update failure

- Causes of common problems

  • Incompatible drivers/modules
  • Improperly applied patches
  • Unstable drivers or software
  • Server not joined to domain
  • Clock skew
  • Memory leaks
  • Buffer overrun
  • Incompatibility
    Insecure dependencies
    Version management
    Architecture
  • Update failures
  • Missing updates
  • Missing dependencies
  • Downstream failures due to updates
  • Inappropriate application-level permissions
  • Improper CPU affinity and priority

- OS and software tools and techniques

  • Patching
    - Upgrades
    - Downgrades
  • Package management
  • Recovery
    - Boot options
    1. Safe mode
    2. Single user mode
    - Reload OS
    - Snapshots
  • Proper privilege escalations
    - runas/Run As
    - sudo
    - su
  • Scheduled reboots
  • Software firewalls
    - Adding or removing ports
    - Zones
  • Clocks
    - Network time protocol (NTP)
    - System time
  • Services and processes
    - Starting
    - Stopping
    - Status identification
    - Dependencies
  • Configuration management
    - System center configuration manager (SCCM)
    - Puppet/Chef/Ansible
    - Group Policy Object (GPO)
  • Hardware compatibility list (HCL)
Given a scenario, troubleshoot network connectivity issues.- Common problems
  • Lack of Internet connectivity
  • Resource unavailable
  • Receiving incorrect DHCP information
  • Non-functional or unreachable
  • Destination host unreachable
  • Unknown host
  • Unable to reach remote subnets
  • Failure of service provider
  • Cannot reach server by hostname/fully qualified domain name (FQDN)

- Causes of common problems

  • Improper IP configuration
  • IPv4 vs. IPv6 misconfigurations
  • Improper VLAN configuration
  • Network port security
  • Component failure
  • Incorrect OS route tables
  • Bad cables
  • Firewall (misconfiguration, hardware failure, software failure)
  • Misconfigured NIC
  • DNS and/or DHCP failure
  • DHCP server misconfigured
  • Misconfigured hosts file

- Tools and techniques

  • Check link lights
  • Confirm power supply
  • Verify cable integrity
  • Check appropriate cable selection
  • Commands
    - ipconfig
    - ip addr
    - ping
    - tracert
    - traceroute
    - nslookup
    - netstat
    - dig
    - telnet
    - nc
    - nbtstat
    - route
Given a scenario, troubleshoot security problems.- Common concerns
  • File integrity
  • Improper privilege escalation
    - Excessive access
  • Applications will not load
  • Cannot access network fileshares
  • Unable to open files

- Causes of common problems

  • Open ports
  • Services
    - Active
    - Inactive
    - Orphan/zombie
  • Intrusion detection configurations
  • Anti-malware configurations
  • Improperly configured local/group policies

- Improperly configured firewall rules

  • Misconfigured permissions
  • Virus infection
  • Malware
  • Rogue processes/services
  • Data loss prevention (DLP)

- Security tools

  • Port scanners
  • Sniffers
  • Telnet clients
  • Anti-malware
  • Antivirus
  • File integrity
    - Checksums
    - Monitoring
    - Detection
    - Enforcement
  • User access controls
    - SELinux
    - User account control (UAC)

Reference: https://www.comptia.org/certifications/server

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