CompTIA SK0-004日本語 : CompTIA Server+ Certification Exam (SK0-004日本語版)

SK0-004日本語 real exams

Exam Code: SK0-004J

Exam Name: CompTIA Server+ Certification Exam (SK0-004日本語版)

Updated: May 26, 2026

Q & A: 778 Questions and Answers

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CompTIA SK0-004 Exam Syllabus Topics:

TopicDetails

Server Architecture - 12%

Explain the purpose and function of server form factors.1.Rack mount
  • Dimensions
    1U, 2U, 4U
  • Cable management arms
  • Rail kits
2.Tower
3.Blade technology
  • Blade enclosure
    Backplane/midplane
    Power supply sockets
    Network modules/switches
    Management modules
  • Blade server
Given a scenario, install, configure and maintain server components.1.CPU
  • Multiprocessor vs. multicore
  • Socket type
  • Cache levels: L1, L2, L3
  • Speeds
    Core
    Bus
    Multiplier
  • CPU stepping
  • Architecture
    x86
    x64
    ARM
2.RAM
  • ECC vs. non-ECC
  • DDR2, DDR3
  • Number of pins
  • Static vs. dynamic
  • Module placement
  • CAS latency
  • Timing
  • Memory pairing
3. Bus types, bus channels and expansion slots
  • Height differences and bit rate differences
  • PCI
  • PCIe
  • PCI-X
4.NICs
5.Hard drives
6.Riser cards
7.RAID controllers
8.BIOS/UEFI
  • CMOS battery
9.Firmware
10.USB interface/port
11.Hotswap vs. non-hotswap components

Compare and contrast power and cooling components.1.Power
  • Voltage
    110v vs. 220v vs. -48v
    208v vs. 440v/460v/480v
  • Wattage
  • Consumption
  • Redundancy
  • 1-phase vs. 3-phase power
  • Plug types
    NEMA
    Edison
    Twist lock
2.Cooling
  • Airflow
  • Thermal dissipation
  • Baffles/shrouds
  • Fans
  • Liquid cooling

Server Administration - 24%

Install and configure server operating systems.1.Determine server role/purpose
2.Update firmware
3.BIOS/UEFI configuration
  • Boot order

4.Disk preparation

  • RAID setup
  • Partitioning
  • Formatting
  • File system type
    Ext 2, 3, 4
    NTFS
    FAT32
    ReiserFS
    UFS
    VMFS
    ZFS
  • Swap
5.Configure host name
6.Local account setup
7.Connect to network
8.Join domain/directory
9.Address security concerns
  • Patching
  • OS hardening
  • Compliance to company procedures/standards
10.Enable services
11.Install features/roles/applications/drivers
12.Performance baseline
  • Server optimization
  • Swap or pagefile optimization
13.Unattended/remote installations
  • Deploying images and cloning
  • Scripted installs
    PXE boot
    TFTP


Compare and contrast server roles and requirements for each.1.Web server
2.Application server
3.Directory server
4.Database server
5. File server
6.Print server
7.Messaging server
8.Mail server
9.Routing and remote access server
10.Network services server
  • DHCP
  • DNS/WINS
  • NTP
Given a scenario, use access and control methods to administer a server.1.Local hardware administration
  • KVM
  • Serial
  • Virtual administration console
2.Network-based hardware administration
  • KVM over IP
  • ILO
  • iDRAC
3. Network-based operating system administration
  • RDP
  • SSH
  • VNC
  • Command line/shell

Given a scenario, perform proper server maintenance techniques.1.Change management
2.Patch management
  • Operating system updates
  • Application updates
  • Security software updates
  • Firmware updates
  • Device drivers updates
  • Compatibility lists
    Operating systems
    Hardware
    Applications
  • Testing and validation
3.Outages and service level agreements
  • Scheduled downtime
  • Unscheduled downtime
  • Impact analysis
  • Client notification
  • MTTR
4.Performance monitoring
  • CPU utilization
  • Memory utilization
  • Network utilization
  • Disk utilization
    Disk IOPS
    Storage capacity
  • Comparison against performance baseline
  • Processes and services monitoring
  • Log monitoring
5.Hardware maintenance
  • Check system health indicators
    LEDs
    Error codes
    Beep codes
    LCD messages
  • Replace failed components
    Fans
    Hard drives
    RAM
    Backplanes
    Batteries
  • Preventive maintenance
    Clearing dust
    Check proper air flow
  • Proper shut down procedures
6. Fault tolerance and high availability techniques
  • Clustering
    Active/active
    Active/passive
  • Load balancing
    Round robin
    Heartbeat



Explain the importance of asset management and documentation.1.Asset management
  • Licensing
  • Labeling
  • Warranty
  • Life cycle management
    Procurement
    Usage
    End of life
    Disposal/recycling
  • Inventory
    Make
    Model
    Serial number
    Asset tag
2.Documentation
  • Service manuals
  • Network diagrams
  • Architecture diagrams
  • Dataflow diagrams
  • Recovery documentation
  • Baseline documentation
  • Change management policies
  • Service level agreement
  • Server configuration
3. Secure storage of sensitive documentation
Explain the purpose and operation of virtualization components.1.Hosts and guests
2.Management interface for virtual machines
3.Hypervisor
  • Type I
  • Type II
  • Hybrid
4.Hardware compatibility list
  • BIOS/UEFI compatibility and support
  • CPU compatibility support
  • AMD-V/Intel VT
5. Resource allocation between guest and host
  • CPU
  • Storage
  • Memory
  • Network connectivity
    Direct access (bridging) vs. NAT
    Virtual NICs
    Virtual switches
  • Video

Storage - 12%

Given a scenario, install and deploy primary storage devices based on given specifications and interfaces.1.Disk specifications
  • RPM
  • Dimensions/form factor
  • Capacity
  • Bus width
  • IOPS
  • Seek time and latency
  • Hotswap vs. non-hotswap components
2.Interfaces
  • SAS
  • SATA
  • SCSI
  • USB
  • Fibre channel
3.Hard drive vs. SSD
Given a scenario, configure RAID using best practices.1. RAID levels and performance considerations
  • 0
  • 1
  • 5
  • 6
  • 10
2.Software vs. hardware RAID
  • Performance considerations

3.Configuration specifications

  • Capacity
  • Bus types
  • Drive RPM
4.Hotswap support and ramifications
5.Hot spare vs. cold spare
6.Array controller
  • Memory
  • Battery backed cache
  • Redundant controller

Summarize hardware and features of various storage technologies.1.DAS
2.NAS
  • CIFS/SMB
  • NFS
3.SAN
  • iSCSI
  • FCoE
  • Fibre channel
  • LUN and LUN masking
  • HBAs and fabric switches
4.JBOD
5.Tape
  • Drive
  • Libraries
6.Optical drive
7.Flash, compact flash and USB drive

Given a scenario, calculate appropriate storage capacity and plan for future growth.1. Base10 vs. Base2 disk size calculation (1000 vs. 1024)
2.Disk quotas
3.Compression
4.Capacity planning considerations
  • Operating system growth
    Patches
    Service packs
    Log files
    Temporary directories
    Databases
    Application servers
    File servers
    Archival

Security - 13%

Compare and contrast physical security methods and concepts.1.Multifactor authentication
  • Something you have
  • Something you know
  • Something you are
2.Security concepts
  • Mantrap
  • RFID chip
  • ID card
  • Biometric
  • Keypad
  • Access list
  • Security guard
  • Security camera
  • Keys and locks
    Cabinet
    Rack mount
    Server
  • Safe
Given a scenario, apply server hardening techniques.1.OS hardening
  • Stopping unneeded services/ closing unneeded ports
  • Install only required software
  • Install latest operating system patches
2.Application hardening
  • Install latest patches
  • Disabling unneeded services/roles/features
3.Endpoint security
  • HIDS
  • Anti-malware
4. Remediate security issues based on a vulnerability scan
5.Hardware hardening
  • Disabling unneeded hardware and physical ports/devices
  • BIOS password
  • Disable WOL (Wake on LAN)
  • Setup boot order
  • Chassis locks/intrusion detection


Explain basic network security systems and protocols.1.Firewall
  • Network-based
  • Host-based
2.Port security/802.1x/NAC
3.Router access list
4.NIDS
5.Authentication protocols
  • LDAP
  • RADIUS
  • TACACS
  • TACACS+
6.PKI
  • Private key
  • Public key
  • Certificate authority
  • SSL/TLS
7.VPN
8.IPSec
9.VLAN
10. Security zones
  • DMZ
  • Public and private
  • Intranet and extranet

Implement logical access control methods based on company policy.1.ACLs
  • Users
  • Groups
    Roles
  • Resources
    File system
    Network ACLs
    Peripheral devices
    Administrative rights
    Distribution lists
2.Permissions
  • Read
  • Write/modify
  • Execute
  • Delete
  • Full control/superuser
  • File vs. share
Implement data security methods and secure storage disposal techniques.1.Storage encryption
  • File level encryption
  • Disk encryption
  • Tape encryption
2.Storage media
  • Soft wipe
    File deletion
  • Hard wipe
    Zero out all sectors
    Physical destruction
    Remote wipe
Given a scenario, implement proper environmental controls and techniques.1.Power concepts and best practices
  • UPS
    Runtime vs. capacity
    Automated graceful shutdown of attached devices
    Periodic testing of batteries
    Maximum load
    Bypass procedures
    Remote management
  • PDU
    Connect redundant rackPDUs to separate circuits
  • Capacity planning
    PDU ratings
    UPS ratings
    Total potential power draw
  • Multiple circuits
    Connect redundant power supplies to separate PDUs
2.Safety
  • ESD procedures
  • Fire suppression
  • Proper lifting techniques
  • Rack stability
  • Floor load limitations
  • Sharp edges and pinch points
3.HVAC
  • Room and rack temperature and humidity
    Monitoring and alert notifications
  • Air flow
    Rack filler/baffle/blanking panels
  • Hot aisle and cold aisle

Networking - 10%

Given a scenario, configure servers to use IP addressing and network infrastructure services.1.IPv4 vs. IPv6
2.Default gateway
3.CIDR notation and subnetting
4.Public and private IP addressing
5.Static IP assignment vs. DHCP
6.DNS
  • FQDN
  • Default domain suffix/search domain
7.WINS
8.NetBIOS
9.NAT/PAT
10.MAC addresses
11.Network Interface Card configuration
  • NIC teaming
  • Duplexing
    Full
    Half
    Auto
  • Speeds
    10/100/1000 Mbps
    10 Gbps
Compare and contrast various ports and protocols.1. TCP vs. UDP2. SNMP 161
3. SMTP 25
4. FTP 20/21
5. SFTP 22
6. SSH 22
7. SCP 22
8.NTP 123
9. HTTP 80
10. HTTPS 443
11. TELNET 23
12. IMAP 143
13. POP3 110
14.RDP 3389
15.FTPS 989/990
16.LDAP 389/3268
17. DNS 53
18.DHCP 67/68
Given a scenario, install cables and implement proper cable management procedures.1.Copper
  • Patch cables
    Crossover
    Straight through
    Rollover
2.Fiber
  • Single mode
  • Multimode
3.Connectors
  • ST
  • LC
  • BNC
  • SC
  • SFP
  • RJ-45
  • RJ-11
4.Cable placement and routing
  • Cable channels
  • Cable management trays
    Vertical
    Horizontal
5.Labeling
6.Bend radius
7.Plenum cables
8.Cable ties


Disaster Recovery - 9%

Explain the importance of disaster recovery principles.1.Site types
  • Hot site
  • Cold site
  • Warm site
2.Replication methods
  • Disk-to-disk
  • Server-to-server
  • Site-to-site
3.Continuity of operations
  • Disaster recovery plan
  • Business continuity plan
  • Business impact analysis
    Who is affected
    What is affected
    Severity of impact

Given a scenario, implement appropriate backup techniques.1.Methodology
  • Full/normal
    Copy
  • Incremental
  • Differential
  • Snapshot
  • Selective
  • Bare metal
  • Open file
  • Data vs. OS restore
2.Backup media
  • Linear access
    Tape
  • Random access
    Disk
    Removable media
    Optical media
3.Media and restore best practices
  • Labeling
  • Integrity verification
  • Test restorability
  • Tape rotation and retention
4.Media storage location
  • Offsite
  • Onsite
  • Security considerations
  • Environmental considerations


Troubleshooting - 20%

Explain troubleshooting theory and methodologies.1. 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
2. Establish a theory of probable cause (question the obvious)
  • Determine whether there is a common element of symptom causing multiple problems
3.Test the theory to determine cause
  • Once theory is confirmed, determine next steps to resolve problem
  • If theory is not confirmed, establish new theory or escalate
4. Establish a plan of action to resolve the problem and notify impacted users
5. Implement the solution or escalate as appropriate
  • 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 new change
6. Verify full system functionality and if applicable implement preventative measures
7.Perform a root cause analysis
8. Document findings, actions and outcomes throughout the process


Given a scenario, effectively troubleshoot hardware problems, selecting the appropriate tools and methods.1. Common problems
  • Failed POST
  • Overheating
  • Memory failure
  • Onboard component failure
  • Processor failure
  • Incorrect boot sequence
  • Expansion card failure
  • Operating system not found
  • Drive failure
  • Power supply failure
  • I/O failure
2.Causes of common problems
  • Third-party components or incompatible components
  • Incompatible or incorrect BIOS
  • Cooling failure
  • Mismatched components
  • Backplane failure
3.Environmental issues
  • Dust
  • Humidity
  • Temperature
  • Power surge/failure
4.Hardware tools
  • Power supply tester (multimeter)
  • Hardware diagnostics
  • Compressed air
  • ESD equipment


Given a scenario, effectively troubleshoot software problems, selecting the appropriate tools and methods.1.Common problems
  • User unable to log on
  • User cannot access resources
  • Memory leak
  • BSOD/stop
  • OS boot failure
  • Driver issues
  • Runaway process
  • Cannot mount drive
  • Cannot write to system log
  • Slow OS performance
  • Patch update failure
  • Service failure
  • Hangs no shut down
  • Users cannot print
2.Cause of common problems
  • User Account Control (UAC/SUDO)
  • Corrupted files
  • Lack of hard drive space
  • Lack of system resources
  • Virtual memory (misconfigured, corrupt)
  • Fragmentation
  • Print server drivers/services
  • Print spooler
3.Software tools
  • System logs
  • Monitoring tools (resource monitor, performance monitor)
  • Defragmentation tools
  • Disk property tools (usage, free space, volume or drive mapping)

Given a scenario, effectively diagnose network problems, selecting the appropriate tools and methods.1.Common problems
  • Internet connectivity failure
  • Email failure
  • Resource unavailable
  • DHCP server misconfigured
  • Non-functional or unreachable
  • Destination host unreachable
  • Unknown host
  • Default gateway misconfigured
  • Failure of service provider
  • Cannot reach by host name/FQDN
2.Causes of common problems
  • Improper IP configuration
  • VLAN configuration
  • Port security
  • Improper subnetting
  • Component failure
  • Incorrect OS route tables
  • Bad cables
  • Firewall (misconfiguration, hardware failure, software failure)
  • Misconfigured NIC, routing/switch issues
  • DNS and/or DHCP failure
  • Misconfigured hosts file
  • IPv4 vs. IPv6 misconfigurations
3.Networking tools
  • ping
  • tracert/traceroute
  • ipconfig/ifconfig
  • nslookup
  • net use/mount
  • route
  • nbtstat
  • netstat

Given a scenario, effectively troubleshoot storage problems, selecting the appropriate tools and methods.1.Common problems
  • Slow file access
  • OS not found
  • Data not available
  • Unsuccessful backup
  • Error lights
  • 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
2.Causes of common problems
  • Media failure
  • Drive failure
  • Controller failure
  • HBA failure
  • Loose connectors
  • Cable problems
  • Misconfiguration
  • Improper termination
  • Corrupt boot sector
  • Corrupt file system table
  • Array rebuild
  • Improper disk partition
  • Bad sectors
  • Cache battery failure
  • Cache turned off
  • Insufficient space
  • Improper RAID configuration
  • Mismatched drives
  • Backplane failure
3.Storage tools
  • Partitioning tools
  • Disk management
  • RAID array management
  • Array management
  • System logs
  • Net use/mount command
  • Monitoring tools

Given a scenario, effectively diagnose security issues, selecting the appropriate tools and methods.1.Common problems
  • File integrity issue
  • Privilege escalation
  • Applications will not load
  • Cannot access network file/shares
  • Unable to open files
  • Excessive access
  • Excessive memory utilization
2.Causes of common problems
  • Open ports
  • Active services
  • Inactive services
  • Intrusion detection configurations
  • Anti-malware configurations
  • Local/group policies
  • Firewall rules
  • Misconfigured permissions
  • Virus infection
  • Rogue processes/services
3.Security tools
  • Port scanners
  • Sniffers
  • Cipher
  • Checksums
  • Telnet client
  • Anti-malware

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Domain 3: Storage (12%)

Within this topic, the examinees are required to have competency in installing and deploying key storage devices on the basis of the provided interfaces and specifications depending on a particular scenario; configuring RAID with the help of best practices depending on a particular scenario; summing up hardware & features related to different storage technologies; calculating the relevant storage capacity and planning for prospective growth depending on a particular scenario.

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

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