CompTIA Network+ Practice - 60 Free Certification Questions

Q: How many questions are in this practice set?

This practice set contains 60 questions with detailed explanations.

Q: What topics does this practice cover?

It covers the key topics and question types for CompTIA Network+, including vocabulary, grammar, reading, and practical test skills.

Q: Are there explanations for every question?

Yes, every question includes a clear explanation so you can understand the correct answer and learn from mistakes.

Q: Can I save my progress and mistakes?

Your wrong answers, favorites, scores, and study streak are saved in your browser, so you can review them on the same device.

Q: What practice modes are available?

You can practice randomly, take a timed mock exam, filter by difficulty, type, and topic, search questions, and review wrong answers.

Question 1

What is a computer network?

Select an answer A storage deviceA web browserInterconnected devices that share resourcesA single computer

Question 2

What is an IP address?

Select an answer A unique logical address for a device on a networkA hardware serial numberA passwordA cable type

Question 3

What is a MAC address?

Select an answer A logical IP addressA DNS recordA firewall ruleA hardware address burned into a network interface

Question 4

What does a subnet mask do?

Select an answer Assigns MAC addressesDefines the network and host portions of an IP addressEncrypts network trafficResolves domain names

Question 5

What is DNS used for?

Select an answer Encrypting dataResolving domain names to IP addressesAssigning IP addresses dynamicallyFiltering traffic

Question 6

What is DHCP used for?

Select an answer Resolving domain namesRouting packetsEncrypting trafficAutomatically assigning IP addresses to devices

Question 7

What is TCP?

Select an answer A reliable connection-oriented transport protocolA connectionless protocolA routing protocolA wireless standard

Question 8

What is UDP?

Select an answer A DNS serverA switchA connectionless transport protocolA reliable connection-oriented protocol

Question 9

What is a router?

Select an answer A cableA printerA device that forwards packets between networksA device that connects computers on one LAN

Question 10

What is a switch?

Select an answer A firewallA device that connects devices on a LANA device that routes between networksA modem

Question 11

What is a firewall?

Select an answer A device that filters traffic based on rulesA wireless access pointA switchA DNS server

Question 12

What is bandwidth?

Select an answer The delay of a packetThe number of devicesThe encryption strengthThe maximum data transfer capacity of a link

Question 13

What is Ethernet?

Select an answer A routing protocolA DNS serviceA common LAN technology using framesA wireless standard

Question 14

What is Wi-Fi?

Select an answer A VPNA wireless LAN technologyA wired Ethernet standardA routing protocol

Question 15

What is a VLAN?

Select an answer A virtual LAN that segments traffic logicallyA physical network cableA firewall ruleA DNS zone

Question 16

What is a VPN?

Select an answer A virtual LANA wireless access pointA network cableAn encrypted tunnel between networks

Question 17

What is a load balancer?

Select an answer A DNS serverA switchA device that distributes traffic across serversA device that blocks traffic

Question 18

What is a proxy server?

Select an answer An intermediary that forwards client requestsA wireless routerA cable testerA network printer

Question 19

What is a hub?

Select an answer A device that filters frames by MAC addressA routerA firewallA device that broadcasts frames to all ports

Question 20

What is an access point?

Select an answer A firewallA device that provides wireless connections to a networkA router onlyA switch

Question 21

What is Power over Ethernet (PoE)?

Select an answer A routing protocolDelivering power and data over an Ethernet cableA wireless power standardA firewall rule

Question 22

What is fiber optic cable?

Select an answer Copper cable that uses electrical signalsA wireless antennaA power cableCable that transmits data using light

Question 23

What is a patch panel?

Select an answer A central connection point for network cablesA firewall applianceA DNS serverA load balancer

Question 24

What is a gateway?

Select an answer A network cableA DNS recordA device that connects networks using different protocolsA switch port

Question 25

What is SNMP used for?

Select an answer Assigning IP addressesEncrypting trafficNetwork management and monitoringResolving domain names

Question 26

What is Syslog used for?

Select an answer Assigning IP addressesCollecting and forwarding log messagesMonitoring bandwidthTesting connectivity

Question 27

What is an SLA?

Select an answer A service level agreement defining expected performanceA network cable standardA firewall ruleA routing protocol

Question 28

What is uptime?

Select an answer The time a system is offlineThe boot timeThe response timeThe time a system is operational and available

Question 29

What is a performance baseline?

Select an answer A backup scheduleA cable testA reference for normal network performanceA security policy

Question 30

What is change management?

Select an answer A monitoring toolA controlled process for making network changesA backup strategyA firewall rule

Question 31

What is an incident in network operations?

Select an answer An unplanned event that disrupts serviceA scheduled maintenanceA normal backupA new user account

Question 32

What is a runbook?

Select an answer A firewall logA DNS zoneA switch portA documented procedure for operating and troubleshooting systems

Question 33

What is a backup?

Select an answer A routing tableA network cableA copy of data used for recoveryA firewall rule

Question 34

What is a disaster recovery plan?

Select an answer A plan to restore systems after a disasterA monitoring toolA patch scheduleA VLAN design

Question 35

What is a patch?

Select an answer A network cableA firewall ruleA switch portA software update that fixes issues

Question 36

Which of the following are network monitoring tools? Select all that apply.

Select an answer SNMPSyslogPingSpreadsheet

Question 37

What is authentication?

Select an answer Filtering trafficVerifying a user identityGranting permissionsEncrypting data

Question 38

What is authorization?

Select an answer Verifying identityEncrypting passwordsBlocking trafficGranting permissions to authenticated users

Question 39

What is encryption?

Select an answer Encoding data so unauthorized parties cannot read itFiltering trafficResolving namesAssigning addresses

Question 40

What is a DMZ?

Select an answer A firewall logA DNS zoneA network segment exposed to external traffic with limited accessA private VLAN

Question 41

What is WPA3?

Select an answer A DNS serviceA cable standardA Wi-Fi security protocolA routing protocol

Question 42

What is 802.1X?

Select an answer A cable typePort-based network access controlA wireless frequencyA routing protocol

Question 43

What is zero trust security?

Select an answer Verifying every request instead of trusting a network locationTrusting all internal usersRemoving passwordsBlocking all traffic

Question 44

What is a denial-of-service (DoS) attack?

Select an answer A password attackA phishing emailA DNS cacheAn attack that makes a service unavailable

Question 45

What is malware?

Select an answer A backup fileA network cableSoftware designed to harm systemsA firewall rule

Question 46

What is a VPN concentrator?

Select an answer A load balancerA device that terminates VPN tunnelsA wireless access pointA DNS server

Question 47

What is an access control list (ACL)?

Select an answer A list of rules that permit or deny trafficA list of DNS recordsA routing tableA switch MAC table

Question 48

Multifactor authentication uses two or more authentication factors.

Select an answer FalseTrue

Question 49

What is ping used for?

Select an answer Showing routing tablesEncrypting trafficTesting connectivity to a hostResolving domain names

Question 50

What is traceroute used for?

Select an answer Showing the path packets take to a destinationTesting DNS recordsAssigning IP addressesFiltering traffic

Question 51

What is nslookup used for?

Select an answer Testing physical cablingViewing IP configurationCapturing packetsQuerying DNS records

Question 52

What is ipconfig used for?

Select an answer Capturing packetsViewing and managing IP configuration on WindowsTesting DNSTracing routes

Question 53

What is netstat used for?

Select an answer Configuring VLANsShowing network connections and portsResolving domain namesTesting cables

Question 54

What is a packet capture?

Select an answer A firewall ruleA backup fileA DNS queryRecording network traffic for analysis

Question 55

What is the loopback address?

Select an answer 127.0.0.1192.168.1.18.8.8.80.0.0.0

Question 56

What is a common first check when a device has no internet?

Select an answer Change the wallpaperReinstall the OSVerify the cable and DHCP leaseReplace the hard drive

Question 57

What is a crossover cable used for?

Select an answer Connecting to a modemPowering a deviceConnecting similar devices directly without a switchConnecting a computer to a switch

Question 58

What is a speed test used for?

Select an answer Capturing packetsMeasuring bandwidth and latencyTesting DNSViewing IP configuration

Question 59

What should you do first when troubleshooting a network problem?

Select an answer Identify the problemReplace all cablesReboot every deviceFormat the drives

Question 60

Match each network tool to its purpose.

PingTracerouteNslookupNetstat