Jason Dion's Network+ Course Practice Test

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• Which DNS record creates an alias from one domain name to another?
• Which action helps refresh DNS information on a Windows host during troubleshooting?
• What is the primary function of a firewall?
• Which protocol is used to aggregate multiple physical links into a single logical link to increase bandwidth and provide redundancy?
• Straight-through Ethernet cables are commonly used to connect which pair of devices?
• Which factor is commonly considered to affect wireless signal performance?
• What is the primary difference between a hub and a switch in terms of collision domains?
• Which items are the key components of disaster recovery planning?
• What is netstat commonly used for?
• In PKI, which element establishes trust between parties?
• What is the primary purpose of route poisoning in IP routing?
• Which OSI layers are represented by the TCP/IP Application layer?
• Name two common wireless security protocols and a known vulnerability affecting one.
• Which DNS record maps a domain name to an IPv6 address?
• Which action would verify cable integrity and test for proper length in a cabling deployment?
• Which tool has the capability to capture the TCP handshake and display it for analysis?
• Which statement describes NAT's primary function?
• Explain CIDR notation and calculate the number of usable hosts in a /24 subnet.
• What is the difference between classful addressing and CIDR?
• What does CIDR notation /24 indicate about subnet mask length?
• What is the primary function of a network switch?
• Which technology is central to 802.11ac performance improvements?
• What is mutual TLS and when is it used?
• A MAC address is a hardware address assigned to which component, and how many bits does it contain?
• Which option describes disaster recovery testing?
• Differentiate static and dynamic routing with an example dynamic routing protocol.
• NAS uses which level of storage?
• What is NAT and why is it used in IPv4 networks?
• What protocol is used to carry VLAN membership information across a trunk link?
• To connect two routers directly, which cable is used?
• Port security on a switch restricts which MAC addresses can use a switch port. This primarily mitigates which threat?
• Compared with single-mode fiber, multimode fiber (MMF) is characterized by which statement?
• Which statement correctly describes IDS vs IPS?
• What is a Wireless Access Point (WAP) and how does it differ from a wireless bridge?
• Which protocol is used to secure key exchanges during client-to-server VPN connections and is commonly used with IPsec?
• What is the purpose of a loopback test?
• Which statement correctly contrasts Fibre Channel over Ethernet (FCoE) and iSCSI?
• Which command would you use to verify IP configuration on a Windows machine?
• Which command would you use on Unix/Linux to view the route to a destination?
• Which pair represents VPN protocols that can secure a tunnel?
• Which port does HTTPS typically use and which protocol provides encryption?
• Which statement best describes static routing?
• Which statement describes PAT?
• DHCP Snooping operates as a firewall at which layer in a typical network security model?
• What is the difference between a router and a Layer 3 switch?
• Which of the following is an example of a dynamic routing protocol?
• Which statement best defines a collision domain?
• Which routing protocol is a link-state protocol commonly used in large networks?
• Which device is typically used to terminate a fiber network link at the edge and provide Ethernet connectivity?
• What does DNSSEC provide?
• Which option best describes the advantage of having off-site backups in disaster recovery planning?
• Which statement best describes Fibre Channel over Ethernet (FCoE)?
• What is the primary purpose of the Management Information Base (MIB) in network management using SNMP?
• What differentiates an access port from a trunk port on a switch?
• Which protocol is used to translate domain names to IP addresses?
• What is a common cause of intermittent Wi‑Fi connectivity issues?
• Which statement best describes stateful firewall operation?
• Which device segments collision domains?
• Which statement is true about NAT in IPv4 networks?
• Channel bonding is primarily used to increase wireless throughput by:
• What is NAT and why is it used in IPv4 networks?
• What is the purpose of a DMZ in a network?
• Which device operates at layer 2 and makes forwarding decisions based on MAC addresses?
• What is the role of ARP in a network?
• Packet loss is defined as what?
• What is the primary purpose of a VPN?
• Which statement is true about crossover cables in Ethernet networking?
• Which statement describes stateful firewall inspection?
• Which component handles the physical boundary connection between a carrier's leased line and customer equipment, performing line encoding and conditioning?
• Which statement best describes a Type 1 hypervisor?
• What is a DNS zone transfer?
• Which action mitigates intermittent Wi‑Fi issues caused by interference?
• Which statement correctly describes the collision domain behavior of a network hub?
• NAT hairpinning (NAT loopback) allows internal clients to access an internal resource using which addressing method from inside the network?
• What is the primary purpose of a Storage Area Network (SAN)?
• Which statement best defines jitter in network performance?
• In disaster recovery planning, what does RPO specify?
• Which topology is characterized by a single shared transmission medium that multiple devices listen to?
• What is the primary purpose of a configuration backup for network devices?
• In DHCP, what does the DORA process stand for?
• Which VPN type is commonly used for remote access to a private network through a web browser?
• In wireless networks, ESSID refers to which concept?
• What does DHCPv6 provide in IPv6 networks?
• How many bits are in an IPv6 address?
• Which statement describes IPv6 SLAAC and how it differs from DHCPv6?
• Which server is commonly used as the backend for 802.1X authentication?
• Which statement differentiates a Web Application Firewall (WAF) from a traditional network firewall?
• Which device primarily operates at Layer 2 of the OSI model and forwards frames based on MAC addresses?
• Which protocol is the successor to SSL for securing web traffic?
• What is the primary function of a firewall?
• During a maintenance window, which task is most commonly performed to minimize impact?
• Which VPN type connects two or more networks securely over the Internet?
• KRACK vulnerability is associated with which security protocol?
• What is the standard port number for SSH?
• Which statement is true about iSCSI?
• What is Software-Defined Networking (SDN)?
• Which cable type is normally used to connect a switch or hub to a router or PC?
• Off-site backups are important for a company's long-term health in the event of a disaster because they ...
• Layer 7 firewalls use which technique to identify applications or protocols?
• What is the purpose of a VLAN?
• Which DNS troubleshooting step is commonly performed?
• Which 802.11 standard is commonly associated with Wi‑Fi 5?
• At which OSI layer does a multilayer switch primarily operate to enable routing?
• Which VPN type is commonly used to secure site-to-site connections over the Internet?
• Remote Access Server (RAS) is typically used to provide what?
• Latency is measured as what?
• In a /24 CIDR, how many bits are used for the network portion?
• Which of the following pairs correctly represents two VPN types commonly used?
• What is typically the first action in the general network troubleshooting process?
• Which statement correctly describes ARP spoofing?
• What is SNMP used for?
• Network Address Translation (NAT) operates primarily at which layer of the OSI model?
• Crossover cables are typically used to connect which devices?
• In SLAAC, what mechanism configures addresses automatically?
• In DNS, what is a CNAME record used for?
• Which statement best describes a virtual switch in a virtualization environment?
• On a switch, which configuration best describes the tagging of frames for multiple VLANs?
• What is considered the best practice for handling personal cellphones accessing company data?
• What capability allows a firewall to analyze the actual application or protocol behind traffic on a given port?
• Which transport protocol provides reliable, ordered delivery with flow control in the TCP/IP suite?
• Which statement about encryption types is true?
• Which statement about a network hub is true?
• VLAN hopping can be mitigated by which actions?
• To connect a switch or hub to a router or PC, which cable should be used?
• Bluejacking exploits which wireless technology?
• Which statement correctly distinguishes a broadcast domain from a collision domain?
• Which statement differentiates a baseline from a standard configuration?
• Which statement best describes multi-factor authentication?
• Which statement best describes what NAT does in IPv4 networks?
• What is the purpose of a load balancer?
• Which port is used for HTTPS?
• Which statement best describes a proxy server?
• Which of the following describes the purpose of a network analyzer in a modern network?
• Which tool is commonly used to capture and analyze live network traffic, such as packet captures for troubleshooting?
• Which routing protocol uses a link-state algorithm to determine shortest paths in large networks?
• Which statement best defines a virtual switch in network virtualization?
• What is the purpose of a DMZ in a network?
• For bulk data encryption, which type is typically most efficient?
• What is a maintenance window?
• Which DNS record maps a domain name to an IPv4 address?
• Which statement best describes the primary benefit of a load balancer?
• Which sequence represents the correct order of common fiber optic connectors from left to right?
• What is the purpose of DHCP?
• What defines a broadcast domain in a network?
• What is the function of a syslog server in a network?
• Which type of agent is used to access a device during a one-time check-in at login?
• In IPv4 addressing, what is the difference between a broadcast domain and a collision domain?
• IPv6 uses addresses of what length?
• What does QoS stand for?
• Which statement best describes an LC fiber optic connector?
• Which device is used to segment a broadcast domain?
• In disaster recovery planning, what does RTO specify?
• Change Management in IT operations is best described as a coordinated process to account for ...
• Which statement best describes the purpose of port forwarding?
• Which protocol prevents switching loops in a LAN by creating a loop-free topology?
• Which of the following best describes the purpose of 802.1Q in switching?
• What is a common security concern with SNMP?
• What is the primary purpose of the MX DNS record?
• 10GBase-SR is a 10 Gigabit Ethernet standard that uses which type of fiber?
• Which layer of the OSI model does a typical Layer 2 switch primarily operate at?
• Why is change control important?
• Where is an IDS commonly deployed in a corporate network?
• An Evil Twin in wireless security refers to
• Which command identifies the path to a remote host?
• In IPv4 networks, what does ARP do?
• Raised floors in data centers are used to
• Which device breaks collision domains on a per-port basis?
• Which statement best describes asset management in a network environment?
• Name two common 802.11 wireless standards and one major improvement.
• Which wireless standard is associated with Wi‑Fi 6 and includes OFDMA?
• Which statement accurately describes TLS in data transmission?
• Which characteristic best describes UDP?
• Which statement best describes a Network-Attached Storage (NAS) device?
• What is 802.1X primarily used for?
• Which VPN type connects individual devices to a corporate network over the Internet?
• Which statement best describes the primary function of a CSU/DSU in a leased-line connection?
• What problem does the Spanning Tree Protocol (STP) solve?
• Which technology would you choose for WAN connections that use virtual circuits and require sharing connectivity among multiple sites?
• What does DSCP stand for in QoS?
• 802.11ac wireless networks primarily operate in which frequency band and use which technique to boost throughput?
• In PKI, which entity is responsible for signing certificates and establishing trust?
• Jumbo frames are often used in SAN environments. Which option best reflects that usage?
• What is a tabletop exercise?
• Which of the following describes an SLA in network operations?
• Raised floors in data centers are primarily used to
• Which multiplexing technique allows multiple signals to be transferred in what appears to be simultaneous subchannels within a single communication channel?
• If an IPv4 packet exceeds the network MTU and the Don't Fragment (DF) bit is not set, what happens to the packet?
• Differentiate between a default gateway and a DNS server.
• What is a default gateway?
• What is the purpose of a subnet mask in IPv4 addressing?
• Rollover cable is used to connect to which port on a router or switch?
• What is the purpose of change management in network operations?
• Which protocol is used to manage credentials centrally, combining authentication and authorization?
• To connect two switches or two hubs, what cable is used?
• Jumbo frames are commonly used in which type of network environment?
• Which device can provide a pass or fail status following industry standards and can report open and short lengths?
• To ensure a hypervisor's VM can communicate with others on the host while keeping traffic from leaving the host network, which action is appropriate?
• Which cable type is used to connect two switches or two hubs?
• Which type of NAS storage level is described by storing data as files?
• In a network topology, which arrangement forms a single linear path with devices connected in a line?
• Which DNS record maps a domain to an IPv6 address?
• What is VLAN hopping and which mitigations help prevent it?
• Which components are part of Public Key Infrastructure?
• What is the function of the transport layer, and which protocols operate there?
• What does a Layer 3 switch primarily add compared to a traditional Layer 2 switch?
• What is the standard sequence of steps in Troubleshooting Theory?
• Which of the following technologies is a common WAN technology used to connect sites?
• Which statement best describes the function of a VLAN in a LAN?
• Which transport protocol is typically used for streaming audio/video, and why?
• What is the difference between latency and throughput?
• How do routers differ from switches in a typical network?
• Which network device segments a broadcast domain?
• Which statement best describes a Storage Area Network (SAN) regarding data transfer?
• Which tool is commonly used to map active devices on a network?
• Which sequence represents the correct order of the general network troubleshooting methodology?
• Spanning Tree Protocol is used in switched networks to prevent what?
• What is Public Key Infrastructure (PKI)?
• Which term describes a wireless network that can broadcast across multiple access points to create a single network name?
• Ladder trays are known for which characteristic?
• Which DNS record specifies the mail server responsible for accepting emails for a domain?
• Which statement best describes 802.1X?
• After implementing a corrective action in a troubleshooting process, which step should be performed next?
• What is asset management?
• In load balancing, what is the purpose of a health check?
• Which layer of the TCP/IP model corresponds to the OSI session and presentation layers?
• In DNS, which record type is used to alias one domain name to another?
• Which NAT type maps many private addresses to a single public IP using different ports?
• NAT reflection supports which scenario?
• What benefit does network segmentation provide?
• Bluejacking refers to sending unsolicited messages over Bluetooth to nearby devices.
• What does a SIEM do in network security?
• What is switch port security?
• Which statement is true about collision domains on routers?
• Which cable type is typically used to connect two routers directly or two PCs directly?
• What is a runbook?
• What is the purpose of a quarantine area in a network?
• Which statement best describes the primary function of a router in a network?
• What is true about a TLS handshake?
• In DHCP snooping, which devices are considered trusted?
• Which WAN technology relies on virtual circuits and point-to-multipoint connections and uses packet switching?