CompTIA Network+ Practice Questions

Question 1

Which layer of the OSI model is responsible for routing?
A. Data Link
B. Transport
C. Network
D. Physical

Answer 1

C. Network

Question 2

What is the primary purpose of a subnet mask?
A. Identify the network portion of an IP address
B. Identify the host portion of an IP address
C. Route data between networks
D. Translate IP addresses

Answer 2

A. Identify the network portion of an IP address

Question 3

Which protocol is commonly used for email transmission?
A. FTP
B. SMTP
C. SNMP
D. HTTP

Answer 3

B. SMTP

Question 4

What is the default port for HTTP?
A. 443
B. 110
C. 21
D. 80

Answer 4

D. 80

Question 5

What is a MAC address used for?
A. IP configuration
B. Routing on the Internet
C. Layer 2 device addressing
D. Encryption of data

Answer 5

C. Layer 2 device addressing

Question 6

What does DHCP stand for?
A. Dynamic Host Control Protocol
B. Domain Host Configuration Protocol
C. Dynamic Host Configuration Protocol
D. Domain Handler Configuration Protocol

Answer 6

C. Dynamic Host Configuration Protocol

Question 7

Which protocol is used for secure remote logins?
A. FTP
B. SSH
C. Telnet
D. SMTP

Answer 7

B. SSH

Question 8

Which layer of the OSI model does TCP operate on?
A. Network
B. Data Link
C. Transport
D. Application

Answer 8

C. Transport

Question 9

What is the primary purpose of DNS?
A. Encrypt data transmission
B. Translate IP addresses to domain names
C. Control network access
D. Assign IP addresses

Answer 9

B. Translate IP addresses to domain names

Question 10

Which protocol is used for web browsing?
A. SNMP
B. FTP
C. HTTP
D. DHCP

Answer 10

C. HTTP

Question 11

Which protocol provides IP address configuration to devices on a network?
A. DNS
B. FTP
C. DHCP
D. TCP

Answer 11

C. DHCP

Question 12

What is the primary purpose of the ARP protocol?
A. Translate IP addresses to MAC addresses
B. Encrypt data for secure transmission
C. Convert MAC addresses to IP addresses
D. Determine network speed

Answer 12

A. Translate IP addresses to MAC addresses

Question 13

Which address format is used in IPv6 addressing?
A. Binary
B. Dotted decimal
C. Hexadecimal
D. Octal

Answer 13

C. Hexadecimal

Question 14

What type of IP address is 192.168.0.1?
A. Public
B. Private
C. Multicast
D. Broadcast

Answer 14

B. Private

Question 15

Which of the following protocols operates at the application layer of the OSI model?
A. HTTP
B. ICMP
C. ARP
D. IP

Answer 15

A. HTTP

Question 16

Which protocol allows automated IP address allocation and lease renewal?
A. DHCP
B. DNS
C. ICMP
D. TCP

Answer 16

A. DHCP

Question 17

What does the DMZ in a network environment provide?
A. Encryption for all internal data
B. An isolated segment accessible from external networks
C. A firewall for internet-bound traffic
D. An extension for local networks

Answer 17

B. An isolated segment accessible from external networks

Question 18

What type of device aggregates multiple network connections into a single connection to increase bandwidth?
A. Switch
B. Load balancer
C. Hub
D. Bridge

Answer 18

B. Load balancer

Question 19

What network component is often used to extend Wi-Fi signal coverage?
A. Firewall
B. Router
C. Access point
D. Hub

Answer 19

C. Access point

Question 20

Which network topology uses a single central cable to which all devices connect?
A. Star
B. Ring
C. Bus
D. Mesh

Answer 20

C. Bus

Question 21

Which of the following tools would provide details on the latency and path of packets?
A. ipconfig
B. ping
C. netstat
D. tracert

Answer 21

D. tracert

Question 22

What is the purpose of using SYSLOG in a network environment?
A. To detect network intrusions
B. To monitor system events and logs
C. To store backups
D. To manage IP leases

Answer 22

B. To monitor system events and logs

Question 23

What is SNMP used for in a network?
A. Managing devices
B. Sending files
C. Encrypting data
D. Routing

Answer 23

A. Managing devices

Question 24

Which of the following is typically used for device authentication in a network?
A. NAT
B. DNS
C. RADIUS
D. RIP

Answer 24

C. RADIUS

Question 25

Which command displays active TCP connections and listening ports? A. ipconfig B. netstat C. tracert D. nslookup

Answer 25

B. netstat

Question 26

Which type of malware restricts access to data and demands a ransom? A. Virus B. Worm C. Ransomware D. Spyware

Answer 26

C. Ransomware

Question 27

What is the primary purpose of a VPN? A. Network speed increase B. Encrypted communication over a public network C. Public internet access D. Antivirus protection

Answer 27

B. Encrypted communication over a public network

Question 28

Which protocol provides secure communication over an untrusted network? A. HTTP B. SSL/TLS C. DNS D. DHCP

Answer 28

B. SSL/TLS

Question 29

What does IDS stand for in network security? A. Intrusion Defense System B. Internet Detection System C. Intrusion Detection System D. Internet Defense System

Answer 29

C. Intrusion Detection System

Question 30

What is the primary role of a proxy server? A. Directly connecting devices to the internet B. Caching and filtering client requests C. Encrypting data D. Managing IP addresses

Answer 30

B. Caching and filtering client requests

Question 31

Which command provides details on IP address configuration? A. ipconfig (Windows) or ifconfig (Linux) B. ping C. tracert D. nslookup

Answer 31

A. ipconfig (Windows) or ifconfig (Linux)

Question 32

What tool can be used to identify open ports on a remote system? A. ping B. netstat C. nmap D. nslookup

Answer 32

C. nmap

Question 33

What tool is commonly used to diagnose DNS issues? A. ipconfig B. nslookup C. tracert D. ping

Answer 33

B. nslookup

Question 34

Which tool displays the MAC address associated with a local IP address? A. ipconfig B. tracert C. ping D. arp

Answer 34

D. arp

Question 35

What command can be used to release and renew an IP address in Windows? A. ping B. ipconfig /renew C. nslookup D. tracert

Answer 35

B. ipconfig /renew

Question 36

What kind of network connection uses coaxial cables? A. DSL B. Fiber C. Cable internet D. Satellite

Answer 36

C. Cable internet

Question 37

Which type of cabling is immune to electromagnetic interference? A. Copper B. UTP C. Fiber-optic D. Coaxial

Answer 37

C. Fiber-optic

Question 38

What is the typical use of a punch-down tool? A. Terminating cables on patch panels B. Securing network switches C. Installing Wi-Fi access points D. Configuring routers

Answer 38

A. Terminating cables on patch panels

Question 39

Which technology can provide data and power over Ethernet cabling? A. Wi-Fi B. PoE C. VPN D. DHCP

Answer 39

B. PoE

Question 40

What kind of antenna provides 360-degree coverage? A. Parabolic B. Yagi C. Omnidirectional D. Directional

Answer 40

C. Omnidirectional

Question 41

What is the primary difference between a router and a switch? A. Routers operate at Layer 3, and switches operate at Layer 2 B. Switches operate at Layer 3, and routers operate at Layer 2 C. Routers connect devices within a LAN, while switches connect different LANs D. Routers and switches function at the same OSI layer

Answer 41

A. Routers operate at Layer 3, and switches operate at Layer 2

Question 42

Which of the following tools is used to monitor real-time traffic on a network? A. Traceroute B. Ping C. Packet sniffer D. IP scanner

Answer 42

C. Packet sniffer

Question 43

What is the primary function of a firewall? A. To route packets to external networks B. To encrypt data sent across a network C. To filter traffic based on a set of rules D. To create network backups

Answer 43

C. To filter traffic based on a set of rules

Question 44

Which command would you use to test if a local computer can reach a website? A. tracert B. ping C. ipconfig D. route

Answer 44

B. ping

Question 45

What is the maximum length of a Category 6 Ethernet cable for it to operate effectively? A. 100 meters B. 50 meters C. 500 meters D. 1,000 meters

Answer 45

A. 100 meters