Prepare for the CompTIA Network+ (N10-008) certification exam with these practice questions and answers. This guide covers networking concepts, infrastructure, operations, security, and troubleshooting.
Q: Channel bonding
Answer: Used to reduce redundancy or increase throughput, directly affecting a wireless connection’s speed. Signal strength only refers to the maximum transmitted power by an antenna
Q: Network analyzer
Answer: a useful tool, helping you do things like track traffic and malicious usage on the networki.e. Wireshark
Q: Bluejacking
Answer: sends unsolicited messages over bluetooth to bluetooth enabled devices such as mobile phones, PDAs, or laptop computers
Q: Router
Answer: Allows network segments and broadcast domains to communicate with each other.Allows two broadcast domains for each side of the router
Q: Correct Order of Fiber Connectors
Answer: ST, SC, LC, LC, FC
Q: Crossover cables
Answer: Switch to a switchWorkstation to workstation
Q: Straight-Through Cables
Answer: Computer to switchRouter to modem
Q: Multimode Fiber (MMF)
Answer: Shorter distances than single-mode fiberLarger core size allows for multiple modes of travel for the light signal
Q: Change Management
Answer: Coordinated system to account for upgrades, installs, and network outagesShould include the specific details of what was changed and what things may have been affected by the change
Q: Off-site backups
Answer: Important for a company’s long-term health in the event of a disaster
Q: Network-attached storage (NAS)
Answer: Is a self-contained computer that connects to a home business network and can share files over TCP/IPConsists of a hard disk for storage of files and usually utilizes a RAID system for redundancy and/or performance
Q: Storage Area Network (SAN)
Answer: Specialized LAN designed for data transfer/storageTransfers data at block level with special protocol
Q: Fibre Channel over Ethernet (FCoE)
Answer: Removes need for specialized softwareRuns over your Ethernet
Q: iSCSI (IP Small Computer System Interface)
Answer: Lower cost, built using Ethernet switches (<10 Gbps)Relies on configuration allowing jumbo frames over the network
Q: DHCP snooping
Answer: Layer 2The switch is DHCP firewallTrusted: routers, switches, DHCP serversUntrusted: Other computers, unofficial DHCP servers
Q: Quarantine
Answer: Where devices go that do not meet the regular network’s standards can be placed. They can be checked in this area before connecting
Q: Raised floors
Answer: allow the cabling to be placed under the floor, but still accessible to the network administrators(Hides the cabling)
Q: syslog server
Answer: enables the network administrator to view device error information from a central locationAll network infrastructure devices send system-level information to a centralized server
Q: Evil Twin access points
Answer: Man-in-the-middle attack on a wireless networkMay be used to steal the passwords of unsuspecting users by monitoring their connections or phishing, which involves setting up a fraudulent website
Q: CNAME
Answer: canonical namerecords can be used to alias one name to anotheri.e. google.com & www.google.com
Q: Switching loop
Answer: There is more than one layer 2 path between two endpointsi.e. Two switches connected using both a Cat 6 and a Cat 5eIt can be prevented with Spanning Tree Protocol (STP)
Q: Configuration backup
Answer: Allows a new piece of hardware to be installed and the configuration from the previous device can be restored
Q: 802.11ac
Answer: 5Ghz MIMOprovides support for dozens of non-overlapping channels
Q: Troubleshooting Theory
Answer: Steps a technician uses to solve a problem: identify the problem, establish a theory of probable cause, test the theory, establish and implement a plan of action, verify functionality, and document findings.
Q: NAT
Answer: A method of remapping one IP address space into another by modifying network address information in the IP header packet
Q: RAS (Remote Access Server)
Answer: is a type of server that provides a suite of services to connect users to a network or the internet remotely. Will usually be an RDP or VNC
Q: CSU/DSU (Channel Service Unit/Data Service Unit)
Answer: A piece of equipment that connects a T-carrier leased line from the telephone company to a customer’s equipment (such as a router). It performs line encoding and conditioning functions, and it often has a loopback function for testing.
Q: Proxy Servers
Answer: A third-party computer that passes traffic to and from a specific address without revealing the address of the connected user.Can come up as an unexpected source IP address
Q: You want to ensure that the hypervisor’s VM can communicate but don’t want the network traffic to leave the hypervisor
Answer: Install and configure a virtual switch
Q: switch
Answer: A device for making, breaking, or changing the connections in an electrical circuit.
Q: virtual switch
Answer: A software-based switch that provides functionality similar to physical switches, and is used for connecting virtual systems to form a network.
Q: LACP (Link Aggregation Control Protocol)
Answer: Used to control the combining of ports. Can increase bandwidth and throughput. Can provide network redundancy and load balancing
Q: BEST way to deal with personal cellphones working with company data
Answer: Conduct real-time monitoring of the phone’s activity and usage
Q: Protocol/Packet Analyzer
Answer: Has the capability to capture the TCP handshake and display it for analysis
Q: Bus
Answer: Firewall connects directly to the router, and the router connects directly to the computer. This would form a single line
Q: RADIUS
Answer: Used to manage credentials centrally, combines authentication and authorization
Q: ISAKMP
Answer: Used for securing key exchanges during client-to-server VPN connection. Used in IPsec, which is commonly used in securing the key exchange during the establishment of a client-to server VPN connection
Q: Frame Relay
Answer: relies on virtual circuits and point-to-multipoint connections. specifies the physical and data link layers of digital telecommunication channels using a packet switching methodology
Q: Cable Certifiers
Answer: Can provide a pass or fail status following the industry standards- can show info such as open and short or the length
Q: MX
Answer: record requires in the DNS for a domain for the email server to accept emails- would allow the new server to receive email on behalf of diontraining.com
Q: Time-division multiplexing
Answer: allows for two or more signals or bitstreams to be transferred in what appears to be simultaneous sub channels in one communication channelDelivers multiple calls over a copper wire if you have an ISDN or T1-connection
Q: Management Information Base (MIB)
Answer: used for managing all entities on a network using SNMP protocol
Q: Non-persistent Agent
Answer: Used to access the device during a one-time check-in at loginUsed to perform a one time temporary posture
Q: Rollover cable
Answer: a router/switch console port is connected using this
Q: All ports on a hub make up one
Answer: collision domain
Q: Each port on a router is a
Answer: collision domain
Q: Ladder Trays
Answer: cables can be easily removed or addedcost-effective and allow for easy installation
Q: Route Poisoning
Answer: a method to prevent a router from sending packets through a route that has become invalid within computer networksPrevents routing loops
Q: Multilayer switch is in
Answer: Layer 3
Q: 10GBase-SR
Answer: 10GB Ethernet LAN standard over MMF
Q: Straight Tip
Answer: A fiber connection most common used in fiber and LAN networking applications
Q: ESSID
Answer: a wireless network that can utilize multiple WAPs to a broadcast network
Q: Jumbo frames are commonly used
Answer: in a SAN
Q: What benefit does network segmentation provide?
Answer: Security through isolation
Q: Switches to routers
Answer: Straight-through cable
Q: Switch/hub to switch/hub
Answer: crossover cable
Q: Switch/hub to router/PC
Answer: Straight-through cable
Q: router/pc to router/pc
Answer: crossover cable
Q: Layer 7 firewalls
Answer: Deep pack inspection to identify which applications or protocol is actually being used to send traffic over a given port
Q: NAS uses ____ level storage
Answer: file