Network Certification Practice Test

These questions are part of the practice quiz. Start practicing

• Which technology allows for simultaneous two-way communication?
• What solution should be used for terminating a leased fiber link at a demarcation point?
• What environmental hazards could affect a server with observed corrosion and water in its casing?
• What process should a network engineer complete to ensure access points are properly positioned?
• Which standard architecture should a network administrator research for network virtualization?
• What does the term "system lifecycle" refer to in an organizational context?
• A security administrator wants to ensure that the router setup prevents badly addressed packets from permanently circulating the network. Which of the following accomplishes this?
• What is a significant reason for conducting a posture assessment?
• If a user is accessing a remote desktop via WebSockets, what type of technology is being used?
• What technology is typically used to connect a laptop to a wireless network?
• What is the key difference between static and dynamic IP addressing?
• What does the term "throughput" refer to in networking?
• What does DHCP stand for?
• What does a node do before transmitting packets under Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)?
• What does the acronym IPSec stand for?
• What is the purpose of implementing AAA servers in a networking environment?
• What layer of the OSI model is responsible for data encryption?
• Which policy outlines the acceptable actions regarding the installation of apps on company devices?
• Which category of network does a WAN connect?
• Which tool is typically used to monitor network traffic anomalies and performance issues?
• What might cause a weak wireless signal in the lower levels of a building?
• In network engineering, why is checking the link state important after installing a new switch?
• In networking, what is the significance of a subnet mask of 255.255.255.0?
• Which type of policy is an employee under when going through background checks, account creation, and security training?
• Which network topology offers redundancy and minimizes single points of failure?
• A small business wants to make its website public. Two physical servers that host the website have load balancing configured. Each server has its own Internet Protocol (IP) address. Having only one public IP address from the Internet Service Provider (ISP), what may a network administrator set up so the company's website can interface with public users?
• What determines how many hosts can be on a subnet?
• What is the definition of a network protocol?
• What is the purpose of an SSL certificate?
• Which layer of the OSI model is responsible for the establishment, management, and termination of sessions between applications?
• What type of cable is suitable for installation in building crawl spaces due to its fire-retardant rating?
• In an ad-hoc topology, what does the wireless adapter allow?
• Which protocol should be implemented for an AAA server to validate user credentials for VPN access with a shared secret?
• What type of Domain Name System (DNS) record holds information such as 2001:4860:4860:8888?
• What technology solution does a user utilize when connecting to a remote desktop using WebSockets?
• Which of the following are examples of Key Performance Indicators (KPI) in industrial networks?
• What must be configured to allow a group of servers to retrieve the same content from a single host?
• Which obstacle is crucial to address for a successful BYOD implementation?
• What does the term "broadcast domain" refer to?
• What is the term for a rule that blocks all traffic that does not match specific conditions?
• Which of the following statements about QoS is true?
• What is the term for a site that has approved equipment install permits but is currently empty?
• Which type of assessment is conducted to evaluate an organization's security level and policy implementation?
• What type of antenna would a network technician use to receive and send data from all directions?
• What kind of attack is likely if the network passwords are common words and animal names?
• Which of the following is a common use of the RADIUS protocol?
• What is the main difference between TCP and UDP?
• Which DNS record type holds IPv6 address information?
• Which layer of the OSI model directly interacts with the user?
• What kind of network address typically indicates a connectivity issue?
• What is the appropriate netmask for a Class A address?
• To accommodate a tidy office environment with new multi-functional phones, which configuration should a network administrator implement?
• Which tool is commonly used for network performance monitoring?
• What is one of the primary functions of a Data Loss Prevention product?
• What is the role of a DHCP lease?
• What is an example of a network configuration test command?
• What is the main goal of an attacker setting up an evil twin attack?
• Which two actions are included in the first step of the CompTIA Network+ troubleshooting methodology?
• What function does ARP serve in networking?
• What is the OSI model?
• What tool is appropriate for cutting ethernet cabling?
• In the context of network addressing, what is the primary function of a public IP address?
• What should a bank require from employees to ensure secure access to IT departments?
• What technology should a solutions architect use to create efficient and secure connectivity to corporate clouds?
• Which command is appropriate for verifying DHCP configuration on a Windows server?
• What is the key difference between a hub and a switch?
• Which of the following is NOT a type of IP address?
• Which of the following is a key responsibility of a network administrator?
• Which type of handsets utilizes a code to modulate signals for subscriber traffic extraction?
• What is the purpose of the ping command in networking?
• What technology is commonly used for network segmentation?
• What does the acronym TCP stand for?
• Which device operates at the network layer of the OSI model?
• Which Wi-Fi standard operates on the 2.4 GHz spectrum using OFDM?
• What is the purpose of alternate IP addressing?
• What is the role of a firewall in network security?
• Where do twisted pair cabling wires typically terminate in a building?
• Which actions help test the network configuration and connectivity of a remote server?
• Which layer of the OSI model is responsible for establishing, managing, and terminating connections between applications?
• What is typically the impact of high latency on network communication?
• What does the term “dynamic IP addressing” refer to?
• What is a DHCP scope?
• A network technician wants to create efficiencies in network traffic by implementing a device which applies microsegmentation by establishing a point-to-point link between any two network nodes. Which of the following should they implement?
• How is a mesh network defined?
• In a TCP/IP network, which layer handles error detection and recovery?
• What type of connection does TCP provide?
• When troubleshooting a trunk port connected to a corporate network, what aspect should be checked first?
• What type of attack does a user face if they are locked out of their files until they pay a fee as part of a phishing scam?
• Which option best describes a primary characteristic of an Infrastructure as a Service (IaaS) model?
• What is a recommended solution to block unauthorized access to company infrastructure?
• What does network segmentation primarily improve?
• Which protocol is used for transferring files over the internet?
• What does the acronym BGP stand for in networking?
• Which option is connection-oriented and guarantees delivery while upgrading switch firmware remotely over the LAN?
• What role does a RADIUS server play when a user remotely connects to a company firewall?
• What is a key distinction between public and private IP addresses?
• What type of frames can a network engineer implement to manage a payload of up to 9,000 bytes?
• In packet analysis, which field indicates if a conversation was fragmented due to MTU size?
• What is a common purpose of audit logs in network security?
• How does port forwarding assist a user?
• Which protocol is often required for multicast data flow among a group of servers?
• Which protocol is commonly used for secure data transmission over the internet?
• What is the primary function of a firewall in a network?
• What is a significant advantage of using biometric devices for access control?
• In data communication, what does full duplex mean?
• Which type of IP addressing allows a device to maintain the same IP address when it renews its lease?
• What role does a firewall play in cybersecurity?
• What primary benefit does a private cloud delivery model provide?
• What will a network administrator likely need to reconfigure if a firewall is blocking traffic?
• Which protocol is used to securely transfer files over the internet?
• What type of signal degradation might occur if a network cable is poorly terminated?
• What is the main function of an Intrusion Detection System (IDS)?
• In the context of network troubleshooting, what is the significance of gathering information?
• What does a sensor monitoring the water vapor in the air in a server room detect?
• What does WAN stand for in networking?
• What is the primary function of the traceroute command?
• Which technology uses Time Division Multiple Access for slot allocation in mobile phones?
• What method should IT staff use to check faulty crimping in cables?
• Why is it essential for a network engineer to review the Acceptable Use Policy?
• Which troubleshooting tools should engineers configure to address intermittent packet drops on a layer 3 device?
• Which feature allows multiple devices to share a single public IP address in networking?
• In a configuration where transparency is required, which device should the engineer set up?
• Which device should an engineer use to act as a repeater in a network?
• Which type of packet can cause congestion and require proper management techniques in networking?
• Which device most commonly connects wireless clients to a network?
• Which secure protocols use communications protected by the host's private key?
• Which of the following describes a scenario where network diagram types are best utilized?
• What protocol is often used for remote server connection authentication?
• Which device can inspect packets at the application layer to identify potential security threats?
• What tool should a network technician use to test for a short in the network cable?
• What should engineers use to monitor and troubleshoot intermittent packet drops in a wired layer 3 network device?
• Which type of twisted cable includes a foil screen to minimize crosstalk?
• When viewing a network diagram that shows the data path between a client and a server, which type of diagram might the administrator be looking at?
• What is one benefit of implementing video surveillance as a security measure?
• What is meant by network topology?
• What technology can a system administrator use to troubleshoot remote systems from their desk?
• If a network engineer seeks a cost-effective solution for data storage with hot site redundancy, what would be the best option?
• What term describes the functionality of a hub in a network?
• What is the recommended action for a help desk to eliminate custom configurations on a recycled laptop?
• What does receiving a 169 address typically indicate for a user attempting to connect to a network?
• What is the main function of a Proxy Server in networking?
• Which log should a security administrator audit on a compromised server?
• Why was an administrator unable to ping a server after abruptly losing a Remote Desktop session?
• Which protocol is commonly used to securely transfer files over the Internet?
• Which network topology connects each node to its neighbor in a closed loop?
• Which of the following is a method for protecting data integrity in transmission?
• What is the process called when a network engineer determines each component for a server application and how they will work together?
• Which of the following describes a primary benefit of a mesh network?
• What characterizes an authoritative DNS server?
• Which of the following represents the types of IP addresses?
• What is the primary function of DNS in networking?
• For a consultant trading in an old laptop, what is essential for the help desk before the device is recycled?
• Which methods can effectively regulate physical access to sensitive areas in a building?
• To confirm packet routing to a remote server, which commands should be executed?
• What type of device is likely to cause a high number of data collisions in a network?
• What is the name of the plan addressing large-scale incidents that threaten the performance or security of an entire site?
• In the context of networking, what is a switch most commonly used for?
• What action should an administrator take if the output port of a switch is experiencing frame discards?
• What command would you use in a Cisco switch to view the device's settings?
• What role does an access point serve in networking?
• What type of network environment would typically require remote desktop connections for troubleshooting?
• What is a VPN primarily used for in networking?
• What term describes the interference caused by a poor-quality cable identified during a redundancy check?
• Which approach is used to identify issues by examining each layer of the OSI model starting from Layer 1?
• A technician is setting up an IP camera compliant with the 802.3at standard. What should they set up for the camera?
• What result might occur if a network administrator does not configure firewall settings properly?
• How is a packet defined in the context of networking?
• What does the dictionary of vulnerabilities maintained by cve.mitre.org refer to?
• What does MTBF stand for?
• What is one benefit of using network segmentation?
• What is the maximum length of a USB cable without signal degradation in most cases?
• Which packet types might indicate vulnerabilities during packet analysis?
• When configuring multiple VLANs on a switch, which OSI model layer is being utilized?
• For connectivity between two buildings that are over 750 meters apart, which type of fiber cabling is recommended?
• What does it mean when a network address is described as non-routable?
• What type of power supply can a network engineer purchase that runs on diesel or propane?
• What type of address is assigned when a device cannot connect to a network and receives a 169 address?
• In networking, what is the purpose of load balancing?
• When analyzing server performance, which metric should be monitored to detect packet loss?
• In regards to network security, what is the primary purpose of an onboarding policy?
• What type of switch configuration is commonly implemented for leaf layer access switches in a Software Defined Network (SDN)?
• What does NAT stand for and why is it significant?
• Why is it important for a security team to implement role-based access and least privilege?
• Which of the following solutions is designed to switch traffic to an alternative processing node?
• Which technology offers a mode for simultaneous two-way communication?
• Which of the following is an example of a Key Performance Indicator (KPI)?
• What components are necessary for a hybrid cloud solution according to a company considering a co-location connection?
• Which type of product should an engineer procure to scan content for sensitive information using a dictionary database?
• What type of malformed packets are likely being dropped without alerting the network team?
• What is the term used for packets that exceed the maximum transmission unit in size?
• Which of the following components supports IP address reservation for printers in a Class C network?
• In the CompTIA Network+ troubleshooting methodology, which step focuses on addressing multiple problems one at a time?
• Which of the following characteristics defines a Class C IP address?
• An engineer uses fiber optic cable for a run within a building to a centralized fiber distribution panel in a network closet. Which type of transceiver does the engineer use to achieve 40 GbE speed?
• Which tool should a technician use to locate the physical connection when the wall jack and network patch panel do not have a label?
• What is the name of the policy that ensures critical workflows are maintained during adverse events?
• Identify the protocol commonly used for sending email.
• When identifying a performance issue reported on the network, what should a network admin do next?
• Which two parts are essential in the first step of the CompTIA Network+ troubleshooting methodology?
• A network technician examining routing protocols is likely using which type of metric based on the number of hops to a destination?
• What cloud solutions are beneficial for a company experiencing rapid customer growth and increased service demands?
• What tool is often used for monitoring the integrity of communications in a network?
• Which networking standard is associated with Power over Ethernet technology?
• What type of address is typically assigned to a device that cannot obtain a valid IP address from a DHCP server?
• What is a characteristic of public IP addresses?
• Which technology is 802.11 primarily associated with?
• How is bandwidth defined in networking?
• Which component is crucial in resolving IP addresses to their corresponding hardware addresses?
• Which of the following can be a consequence of a DoS attack?
• What is a likely action for a network admin after identifying a performance issue on a web server?
• What method should a systems administrator use to convert a MAC address for IPv6 addressing?
• In network management, what does the term 'configuration' refer to?
• What does QoS stand for, which is critical for managing bandwidth in a network?
• What is the role of DHCP in networking?
• In network troubleshooting, the ping command is primarily used to?
• What is the primary purpose of a router in a network?
• What is the primary function of the transport layer in the OSI model?
• What type of cabling can be used effectively for short distances in high-speed network environments?
• At which OSI model layer would a technician likely troubleshoot a VoIP phone connectivity issue?
• What does DHCP stand for?
• What is the purpose of Cisco's CCNA certification?
• Which authentication methods should a network administrator combine to validate a client's access to the network?
• What does the acronym VLAN stand for?
• What is the primary function provided by tunneling in IPv6?
• Which of the following is a benefit of using EUI-64 for IPv6 addressing?
• What does QoS stand for in networking?
• What is a common vulnerability when using simple passwords that could lead to unauthorized access?
• Why is subnetting utilized in networking?
• Which layer of the OSI model is associated with the management of sequence numbers?
• What is the current name for the Wi-Fi category formerly known as 802.11n?
• Which layer of the OSI model is responsible for routing packets between different networks?
• What is the primary function of port forwarding?
• What is the primary purpose of the system being tracked by the inventory system mentioned in the scenario?
• What is subnetting?
• Which topology allows for the direct connection of every device to every other device in the network?
• In MAC address terminology, what does the I/G bit represent?
• What type of handsets does a communications company using TIA/EIA IS-95 require?
• What are common obstacles to address in a "Bring Your Own Device" (BYOD) program?
• What type of address is an IP address?
• What does VLAN stand for and what is its purpose?
• What does the acronym ICMP stand for?
• What is one purpose of ICMP?
• Which device is primarily used to connect multiple computers within the same network?
• How does a proxy server enhance network privacy?
• What is the purpose of error recovery in networking?
• Which of the following is NOT considered a fundamental aspect of networking protocols?
• What does MTU stand for in networking terminology?
• An essential function of a network switch is to:
• What is the key benefit of using a VPN?
• What feature is crucial for enhancing network security by controlling access to specific devices?
• What should a network engineer investigate to help lower traffic collision rates on the network?
• Which port allows a security analyst to read traffic without private keys?
• What is the purpose of a subnet mask?
• What is the main goal of a Denial-of-Service (DoS) attack?
• What protocol is used for remote device management in networking?
• What is the function of a switch in a network?
• What protocol is recommended for implementing authentication in a VPN setup?
• Which protocol is typically used for secure file transfer over a network?
• What is a key characteristic of ransomware?
• What action is likely taken by a threat actor if weakness in a network is discovered?
• If a user is having trouble connecting to WiFi despite using the correct password, what could be a potential issue?
• What does SNMP stand for?
• In what scenario does a client application display a certificate warning to the user?
• Which of the following describes a crossover cable?
• Which protocol and port must be open to synchronize time across network devices?
• What does latency measure in networking?
• An email administrator is setting up records for their new cluster of mail servers. What must each of their MX records point to?