WorksheetsCompTIA Network+ N10-009 Exam Revision Questions
Total questions: 96
Worksheet time: 48mins
Which statement best defines a peer-to-peer network?
Each host acts as both client and server.
A larger network with many servers and clients.
Moves information using logical network and host IDs.
The OS is deployed as a VM on a hypervisor.
In a client-server network, which description is most accurate?
Some nodes act as clients, like PCs and smartphones.
Each node provides identical services.
Only layer 3 devices can participate.
Every node must host virtual appliances.
Which option best describes an Enterprise LAN?
A large network with many servers and clients.
A small network between two laptops.
A home Wi‑Fi network with one access point.
A WAN connecting ISPs across continents.
Which topology is commonly used in WANs, especially in public networks like the Internet?
Mesh topology
Star topology
Ring topology
Bus topology
Which OSI layer moves information around the internetwork using logical network and host IDs?
Network layer
Data Link layer
Physical layer
Transport layer
What are virtual appliances?
The OS is deployed as a VM running on a hypervisor.
Preconfigured physical routers.
A scripting toolkit for CLI automation.
A replacement for binary encoding at the Physical layer.
Which statement accurately defines binary?
Base 2 with digits 0 and 1; each place is the next power of 2.
Base 10 with digits 0–9; each place increases by 10.
Hexadecimal digits 0–F used for MAC addressing.
A compression method for network traffic.
What action should be taken during Troubleshooting Step 1?
Question users about any changes.
Form a theory of probable cause.
Verify system functionality.
Determine next steps if theory is confirmed.
What is emphasized in Troubleshooting Step 3?
If theory is confirmed, determine next steps to resolve the problem.
Question users and document changes.
Escalate immediately to vendor support.
Close the ticket and record lessons learned.
What is the purpose of Troubleshooting Step 7?
Document findings, actions, outcomes, and lessons learned.
Validate theory with a controlled test.
Back up configurations before changes.
Notify users of a scheduled outage.
Which statement about Ethernet standards is true?
They ensure network cabling meets bandwidth requirements.
They guarantee zero packet loss on a LAN.
They require fiber cabling for all backbones.
They prohibit the use of copper in data centers.
Which statement about copper cable is correct?
It transmits electrical signals and creates low voltage.
It transmits optical signals and requires a laser at each end.
It carries only analog voice signals.
It is immune to electromagnetic interference.
Which use case is listed for twisted pair cables?
Used for telephone and data networks.
Used for long-haul submarine cables.
For industrial control systems.
For audio equipment in studios.
What can a plenum space carry?
HVAC systems can run through plenum spaces.
Only electrical conduits are allowed in plenums.
A plenum space cannot carry HVAC systems.
Only water sprinklers may run through plenums.
In the T568A wiring standard, which pairs connect to pins 1 and 2?
Green pairs
Orange pairs
Brown pairs
Blue pairs
Which statement about fiber optic signals is accurate?
They are difficult to intercept and have low attenuation over distance.
They are easily intercepted and suffer from high attenuation.
They require copper repeaters every 10 meters.
They generate low voltage across the conductor.
What do fiber patch cables connect?
Wall ports to NICs and patch panels to switches.
Wireless APs to controllers over PoE.
ISP demarcation to customer routers over DSL.
Servers directly to storage over SAS.
What does Wavelength Division Multiplexing (WDM) use?
Multiple wavelengths on a single strand to carry multiple channels.
Multiple strands for a single channel to reduce latency.
Electrical multiplexing to combine copper pairs.
Time slots that replace Ethernet framing.
Which throughput claim about Cat 6 over 100 meters is correct?
It does not support 100 Gbps over 100 meters.
It supports 100 Gbps over 100 meters.
It supports 400 Gbps over 10 meters.
It only supports 10 Mbps over 100 meters.
Which component connects a host to the transmission medium?
Network Interface Card (NIC)
Small Form-factor Pluggable (SFP) module
Transceiver within a router
Wireless access point radio
Which transceiver type uses LC connectors and supports 10 Gigabit Ethernet?
SFP (Small Form-factor Pluggable)
RJ-45 copper transceiver
QSFP (Quad Small Form-factor Pluggable) for 40 GbE only
GBIC (Gigabit Interface Converter) legacy module
Which device acts as a multiport repeater so that all ports receive transmissions from any port?
Hub
Switch
Router
Bridge
What is the table in a switch that stores mappings of source MAC addresses to switch ports?
MAC Address Table
ARP Cache
Routing Table
CAM-ARP Table
Which protocol resolves an IPv4 address to a MAC address?
Address Resolution Protocol (ARP)
Domain Name System (DNS)
Dynamic Host Configuration Protocol (DHCP)
Internet Control Message Protocol (ICMP)
Which term distinguishes the network ID from the host ID in an IPv4 address?
Network Mask (Netmask)
Default Gateway
Subnet Router Anycast
CIDR Router
Which statement correctly describes an IPv4 address?
It is 32 bits long and represented in binary.
It is 64 bits long and represented only in hexadecimal.
It is 128 bits long and represented in dotted decimal.
It is 32 bytes long and represented in octal.
What device does a host use to forward packets to a different network or subnet?
Default Gateway
Core Switch
DHCP Relay
DNS Resolver
Which command renews a DHCP client lease in Windows?
ipconfig /renew
ipconfig /flushdns
netstat -r
arp -a
Which device combines multiple input signals into one for transmission?
Multiplexer
Demultiplexer
Switch
Repeater
Which network topology connects every device directly to every other device?
Mesh topology
Star topology
Bus topology
Ring topology
Which command checks network connectivity by sending ICMP Echo Requests?
ping
tracert
pathping
nslookup
Which protocol encrypts data in transit between email servers?
STARTTLS
TLS-PSK for Wi-Fi only
SSLv2 mandatory
IMAP without TLS
Which tool is used to monitor and analyze network traffic packets?
Wireshark
Notepad++
PowerShell ISE
Event Viewer
Which term refers to the IP address of the next router in the path to the destination?
Default Gateway
Next Hop
Routing Table
Subnet Mask
Which technology improves network security and performance by segmenting a switched network into separate broadcast domains?
Subnetting
Network Address Translation (NAT)
Port Forwarding
Virtual LANs (VLANs)
Which distance-vector routing protocol selects the best path based on the lowest hop count?
OSPF
EIGRP
RIP
BGP
A routing issue occurs due to a missing route in the router’s configuration. What is the most likely cause?
Incorrect subnet mask
Missing route
Router overload
Incorrect IP address
What mechanism allows an edge router to translate private LAN addresses to public Internet addresses, conserving public IPv4 space?
DHCP
VPN
NAT
DNS
Which protocol at the Transport layer provides connectionless, best-effort delivery without acknowledgments or flow control?
UDP
TCP
HTTP
IP
Which device filters traffic between private and public zones by analyzing connection requests and enforcing rules?
Router
Switch
Load Balancer
Firewall
When a DHCP server provides settings like default gateway, DNS servers, and domain name along with IP address and mask, these are called:
DHCP Options
DHCP Reservations
DHCP Lease Time
DHCP Relay
Which hierarchical model divides an enterprise network into access, distribution, and core layers?
Three-tiered Hierarchy
Flat Network Design
Mesh Topology
Spanning Tree Protocol
A Windows host cannot reach a DHCP server and self-assigns an address in the range 169.254.1.1–169.254.254.254. What feature is this?
Static IP Assignment
DHCP Reservation
APIPA addressing
Link-Local Addressing
On an 802.1Q trunk, which VLAN is untagged traffic placed into by default for legacy devices?
Native VLAN
Management VLAN
Voice VLAN
Default VLAN
How can a network with multiple subnets handle DHCP for all segments without a server on each subnet?
Static IP addressing
DHCP relay
DNS forwarding
NAT traversal
You can ping a host’s default gateway but cannot reach remote networks. What is the likely issue?
DNS issues
Default gateway misconfiguration
Firewall blocking traffic
Routing table issues
What uniquely identifies a host on the Internet and prevents duplicate names across domains?
Hostname only
IP address alone
Subdomain hierarchy
Fully Qualified Domain Name (FQDN)
Which Transport-layer protocol is connection-oriented, uses acknowledgments, and ensures reliable delivery?
UDP
TCP
ICMP
ARP
Which statement best describes the Slew method in network time synchronization?
A rapid correction that sets the clock to the correct time, risking disruption
A slower NTP adjustment that nudges the clock by small increments
A manual process where administrators reset the BIOS clock
A one-time calibration done only at device provisioning
Which option identifies the primary purpose of the File Transfer Protocol (FTP) in enterprise environments?
Providing encrypted email delivery between mail servers
Facilitating administrative upload and download of files to and from servers and appliances
Monitoring CPU and memory utilization on network devices
Synchronizing system time across distributed systems
Syslog is most accurately characterized as which of the following?
A de facto standard protocol and supporting software for centralized collection of log events from distributed systems
A peer-to-peer file sharing protocol designed for multimedia content
A transport-layer protocol that ensures sequencing and retransmission
A cloud backup format for archiving system images
In cybersecurity, what does the term Vulnerability refer to?
An automated patch that fixes discovered defects without downtime
A weakness that could be accidentally triggered or intentionally exploited to cause a security breach
A confirmed incident where data has already been exfiltrated
A legal requirement to disclose software defects to regulators
Which statement about Load Balancers aligns with their role in networked services?
They are groups of compromised hosts used to launch DDoS and DRDoS attacks after malware installation
They distribute client requests across multiple servers to improve availability and performance of applications and services
They replace NTP servers by slewing time across data centers
They act solely as storage devices for backing up system logs via Syslog
Which term describes an attack where a malicious server provides incorrect default gateway and/or DNS resolver settings to clients to redirect their traffic?
Rogue DHCP
MAC flooding attacks
Spoofing attacks
Performance metrics
Which backup approach creates a snapshot-style image of the entire system that can be restored to any device of the same make and model?
Incremental backup
Differential backup
State/bare metal
File-level copy
Which attack aims to overwhelm a switch’s memory that stores the MAC address table?
ARP poisoning
MAC flooding attacks
Port scanning
DNS tunneling
Which term refers to indicators such as bandwidth, utilisation, CPU/memory, and storage that are monitored to judge whether a host or appliance is operating normally?
Service level objectives
Baseline thresholds
Performance metrics
Capacity planning
Which description best matches the impact of corrupt forwarding at the Data Link layer (Layer 2), which can be substantial and difficult to mitigate?
Pharming attacks
Spoofing attacks
Brute-force attacks
War driving
What is the term for a logical partition of a network that improves security by isolating traffic between different segments?
Subnet mask
VLAN
Trunk port
DMZ
Which network device forwards frames only to the port associated with the destination MAC address, unlike a hub?
Repeater
Router
Switch
Bridge-mode modem
Which method translates private IP addresses to a public IP address for communication over the internet?
PAT chaining
NAT
Proxy ARP
Split tunneling
Which system translates human-readable domain names into numerical IP addresses to help devices locate each other on the internet?
NAT (Network Address Translation)
DNS (Domain Name System)
ARP (Address Resolution Protocol)
QoS (Quality of Service)
Which device connects different networks and determines the best path for data packets to travel?
Router
Switch
Hub
Repeater
What term describes the networking technique that prioritises certain types of traffic to ensure better performance for critical services?
DMZ (Demilitarized Zone)
QoS (Quality of Service)
VLAN (Virtual LAN)
NAT (Network Address Translation)
Which network segment sits between a trusted internal network and an untrusted external network to add a layer of protection?
VLAN
DMZ
Subnet
WAN
Which protocol maps an IP address to a MAC address within a local network?
DNS
NAT
ARP
ICMP
Which technology provides a secure, encrypted tunnel that allows remote users to access a corporate network over the internet?
NAT
VPN
Proxy caching
Port mirroring
Firewalls can be categorised based on whether they maintain a state table for established connections. Which pair correctly lists these types?
Packet and Proxy
Host-based and Network-based
Stateful and Stateless
Static and Dynamic
An organisation structures its network into zones to guide security rules. Which combination lists five commonly used security zones?
Private server administrative networks, Private client network, Guest, Public server network, Public
Data center, Branch office, Cloud, Remote user, Partner
Core, Distribution, Access, Wireless, Edge
Development, Testing, Staging, Production, Archive
Which option best identifies three examples of physical security measures?
Firewalls, IDS, and IPS
Door locks, security guards, and CCTV
VPN, NAT, and VLAN
QoS, ARP, and DNS
Which set lists three wireless standards that are commonly referenced in enterprise environments?
802.11n, 802.11ac, 802.11ax
802.3af, 802.1Q, 802.1X
SAS, SATA, NVMe
TLS, SSH, IPsec
Which physical security control directly restricts entry to a server room by requiring a physical mechanism to open a door?
Locks
Geofencing
PTZ cameras
Motion-detection lighting
IEEE 802.11n primarily improved WLAN performance by introducing which capability?
Operation only in the 5 GHz band
Support for MU-MIMO and OFDMA
Higher throughput using MIMO and channel bonding
Power-saving mode that disables beacons
A WLAN deployed for legacy devices needs the earliest widely adopted 2.4 GHz standard with data rates up to 11 Mbps. Which IEEE 802.11 version should be enabled?
802.11a
802.11b
802.11g
802.11ac
Refer to the first network diagram: Identify the topology shown and select the most accurate description.
Bus topology where all devices share a single backbone cable
Star topology where all nodes connect to a central switch or hub
Ring topology where data travels in one direction between neighbors
Mesh topology where every node has a link to every other node
Refer to the second and third network diagrams: Which pairing correctly matches each image to its topology?
Image 9.1.2: Star; Image 9.1.3: Bus
Image 9.1.2: Full mesh; Image 9.1.3: Hybrid (combination of topologies)
Image 9.1.2: Ring; Image 9.1.3: Tree only
Image 9.1.2: Bus; Image 9.1.3: Star
Refer to the image: Identify the network device shown. It has multiple WAN/LAN ports, console interfaces, and performs packet forwarding between different logical networks at the OSI Network layer.
Router
Switch
Wireless access point
Network interface card
Refer to the image: Identify the network device shown. It provides many Ethernet ports and is used to establish contention-free network segments at OSI layer 2.
Switch
Router
Modem
Firewall appliance
Which topology connects each node to a central point, typically a switch or a router?
Star topology
Mesh topology
Hybrid topology
Bus topology
Which topology is often used in WANs where each device has a point-to-point connection with every other device?
Mesh topology
Star topology
Ring topology
Tree topology
Which statement best describes a hybrid topology?
A topology that uses a single physical layout for the whole network
A topology that uses a combination of physical or logical topologies
A topology limited to wireless networks only
A topology where every device connects directly to every other device
At which OSI layer does a router primarily operate when forwarding packets between logical networks of different layer 1 and 2 types?
Network layer (Layer 3)
Data Link layer (Layer 2)
Physical layer (Layer 1)
Transport layer (Layer 4)
What is the full form of the abbreviation WEP in networking security?
Wired Equivalent Privacy
Wireless Encrypted Protocol
Wide Ethernet Protection
Web Encryption Profile
What does TKIP stand for in Wi‑Fi security?
Temporal Key Integrity Protocol
Transport Key Internet Protection
Trusted Key Infrastructure Policy
Token Key Interchange Procedure
In the context of wireless communication, RF stands for:
Radio Frequency
Routing Function
Rapid Frame
Remote Facility
A secure tunnel over a public network is commonly called a: What does VPN stand for?
Virtual Private Network
Verified Public Node
Variable Packet Network
Virtual Packet Notation
In remote connectivity, the acronym RAS expands to:
Remote Access Service
Router Authentication System
Remote Administration Server
Resource Allocation Suite
Which statement best defines a datacentre in the context of cloud and enterprise IT?
A site dedicated to provisioning server resources
A desktop computer used for local virtualization
A wireless access point for public networks
A client application for remote login
In networking, what does North-South traffic refer to?
Traffic moving between servers inside the same rack
Traffic that goes to and from a datacentre
Traffic that moves between virtual machines on the same host
Traffic limited to storage arrays within a SAN
Scalability can be achieved by which pair of actions?
Overclocking CPUs and compressing logs
Adding nodes (horizontal scaling) or adding resources to each node (vertical scaling)
Replacing spinning disks with SSDs and enabling caching
Segmenting VLANs and changing subnets
Which cloud model is described as a means of provisioning IT resources such as servers, load balancers, and SAN components quickly?
IaaS
SaaS
PaaS
On-premises
Which cloud model is a different model of provisioning software applications, typically delivered to end users?
IaaS
SaaS
PaaS
Bare-metal hosting
Which cloud model provides resources somewhere between SaaS and IaaS?
PaaS
SaaS
IaaS
Colocation
What best describes the function of a NAT gateway in a cloud environment?
Allows an instance to connect out to the Internet or to other AWS services but does not allow connections initiated from the Internet
Enables public inbound SSH access to private subnets
Provides DNS resolution for internal hostnames
Creates a site-to-site VPN between datacentres
Which statement most accurately explains a playbook in automation?
A manual checklist for technicians to follow without code
Each configuration or build task is performed by a block of code, scripting as many stages of the SOP as possible with defined points for human verification
A collection of firewall rules managed only through a GUI
A compiled binary that runs without human oversight or documentation
A team needs to scale a web service to handle more users while keeping cost efficient. Based on the provided guidance, which approach is most appropriate?
Buy a larger single server only
Add more nodes to distribute load or increase resources per node, depending on constraints
Migrate to a different programming language
Disable logging to reduce I/O
