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Network+ Study Test
Network+ Study Test
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1
Which 802.11b/g channel operates at 2422 MHz?
Channel 3
Channel 1
Channel 6
Channel 11
2
Which type of fiber media connector is shown in the figure?
MT-RJ
FC
LC
SC
3
Which type of fiber media connector is shown in the figure?
SC
FC
LC
MT-RJ
4
What is the second step in CompTIA’s troubleshooting framework?
Establish a theory of probable cause.
Establish a plan of action to resolve the problem.
Identify the problem.
Implement the solution or escalate as necessary.
5
The subnet mask is which of the following?
255.255.255.128
255.255.255.1
255.255.255.12
255.255.255.255
6
What is the significance of using a cable tester in network diagnostics, and what common issues can it help identify?
measure the data throughput and provide performance metrics
detect electromagnetic interference and crosstalk within wireless networks
Identify shorts, improper connections, & continuity issues
enhance network security by encrypting data transmissions
7
Which cable type is most suitable?
UTP
Fiber-Optic
STP
Thin coax
8
How does a honeypot function in network security?
By encrypting network traffic
By serving as a decoy system to attract and deflect attacks
By actively scanning for vulnerabilities
By managing network access control lists
9
Which of the following is an antenna rating that provides a base point for measuring actual antenna strength?
Isotropic
Harmonized
Paired
Homogeneous
10
With which type of cloud service can consumers deploy but not manage or control any of the underlying infrastructure?
IaaS
Private
PaaS
SaaS
11
Which of the following is a configurable client identification setting used to differentiate one WLAN from another?
LTE
SSID
SID
WPA2
12
Which of the following switches can be used with
nslookup
to ask for a recursive answer to the query?
recurse
defname
vc
search
13
What is the primary function of a hot recovery site in disaster recovery planning?
To store backup media offsite
To conduct tabletop exercises
To provide basic office furniture
To be ready to continue core business functions immediately
14
What is the main difference between congestion and contention in network terms?
Congestion: only on wired networks. Contention: only on wireless networks.
Congestion: Caused by hardware failure. Contention: Software Bugs
Congestion: Packet loss. Contention: High latency
Congestion: High Traffic. Contention: Multiple devices competing
15
How does Port Address Translation (PAT) work, and what advantages does it offer over traditional NAT?
translates private IP addresses to a single public IP address
divides a single public IP address into multiple private addresses
encrypts data packets before transmission, ensuring secure communication
assigns a unique public IP address to each device on a network
16
What is the purpose of DNSSEC?
compresses DNS data to reduce transmission times and improve efficiency
replaces the traditional DNS protocol, offering a new standard
adds security features to DNS by using digital signatures
provides encryption for DNS queries and responses
17
Under what circumstance would you change the default channel on an access point?
To increase the security settings
To release and renew the SSID
When channel overlap occurs between access points
To decrease the security settings
18
What role does the Neighbor Discovery Protocol (NDP) play in IPv6 networks?
network layer, handles autoconfig, discovers nodes, & determines addresses
encrypting IPv6 packets to ensure secure communication between nodes
routing IPv6 packets within local networks, using static routing tables
application layer protocol, managing data flow between IPv6 applications
19
Which of the following best describes the spine and leaf model in modern network architecture?
Designed for small networks, limited scale and fault tolerance
Minimized cable cost but increased latency and less efficient traffic
Even traffic flow, full-mesh with fault tolerance, ideal for datacenters
Simplified design, reduced connections, but limited scale & fault tolerance
20
What is the role of VXLAN Tunnel Endpoints (VTEPs) in a Virtual Extensible Local-Area Network (VXLAN) environment?
encapsulate and decapsulate VXLAN packets
provide security policies and QoS settings to optimize network traffic.
routing Layer 3 packets within a single data center.
manage physical switch configurations
21
What are the key differences between the three-tier hierarchical model and the collapsed core model in network design?
3T: Ideal for small networks. CC: Better scalability and fault tolerance
3T: Simplifies network design. CC: enhances redundancy but more complex
3T: Separated core, distribution, & access CC: combined core & distribution
3T: Combined Core & Distribution CC: Separated core, distribution, & access
22
What is the primary purpose of network discovery in network monitoring?
To perform load testing on the network
To enhance encryption protocols
To manage user access rights
To identify and catalog devices, services, and resources
23
Which type of problem occurs when the signals sent through media interfere with data signals on adjacent wires?
Crosstalk
Jamming
Jitter
EMI
24
How does rack size impact network installation and scalability, and what common dimensions are used in the industry?
Rack size impacts the organization and cooling of network equipment
Rack size has no impact on network installation
Rack size only affects the physical appearance of the network room
Rack size is irrelevant for modern networks
25
What is the function of the Spanning Tree Protocol (STP)?
encrypts data packets to ensure secure transmission between switches
prevents switching loops by dynamically disabling redundant paths
aggregates multiple VLANs into a single VLAN simplifying network management
dynamically adjusts IP addresses to optimize routing paths
26
Which cloud type, using a pay-as-you-go model, is typically used by webmail or online document sharing?
Community Cloud
Private Cloud
Hybrid Cloud
Public Cloud
27
What is the primary function of SSH (Secure Shell) in network management?
To provide a graphical user interface for network device management
To automate network management tasks through API calls
To connect to network devices using a dedicated console port
To enable secure remote access and management of network devices
28
Why is network segmentation important for IoT and IIoT environments?
To reduce the number of devices on the network
To isolate IoT/IIoT devices and contain security breaches
To allow unrestricted communication between all network devices
To simplify network configuration
29
Which of the following protocols enables client systems to access and run applications on a remote system?
MOU
SOW
RDP
CAI
30
Which of the following protocols operates, by default, on ports 5060 and 5061?
SMB (Server Message Block)
DHCP (Dynamic Host Configuration Protocol)
SIP (Session Initiation Protocol)
RDP (Remote Desktop Protocol)
31
What is the purpose of a DNS (Domain Name System) mail exchange (MX) record, and how does it function in email delivery?
Encrypts email messages to ensure secure communication
Maps a domain name to an IP address
Dynamically updates email server addresses based on network traffic
Specifies the mail servers responsible for receiving email messages
32
You are implementing a 1000BASE-T network. Which physical topology does the network use?
Point-to-point
Mesh
Bus
Star/hub and spoke
33
What are the characteristics and typical use cases of the three-tier hierarchical model in network architecture?
Separates Core, distribution, and access layers.
Combines the access and distribution layers, reducing redundancy
Combines Core and Access layers. Offers Minimal Scalability.
Eliminates the core layer and focuses on distribution and access.
34
How does the First Hop Redundancy Protocol (FHRP) ensure high availability and fault tolerance in a network?
uses encryption to secure data transmission between routers
monitors network traffic and dynamically adjusts routing paths
enables multiple routers to share a virtual IP address and MAC address
assigns static IP addresses to multiple routers
35
Which of the following PDUs is associated with the transport layer?
Segments
Frames
Data
Packets
36
What are SNMP (Simple Network Management Protocol) databases called?
MIBs (Management Information Bases)
WINS
HOSTS
Agents
37
Which of the following protocols operates, by default, on port 22?
TFTP (Trivial File Transfer Protocol)
DNS (Domain Name System)
SSH (Secure Shell)
SMTP (Simple Mail Transfer Protocol)
38
What mechanisms are involved in ensuring IPv6 compatibility with existing IPv4 networks?
through dual-stack implementation, allowing devices to use IPv4 and IPv6
tunneling mechanisms such as 6to4 and Teredo, and NAT64 translation
specialized hardware to communicate with IPv4 networks
relies on manual IP address translation at network boundaries
39
Which of the following cabling types is used with 1000BASE-TX?
Cat 4
Cat 6
Cat 5
Cat 3
40
How do jumbo frames impact network performance?
Standard-sized Ethernet frames that prioritize critical traffic
Encrypted Ethernet frames that enhance security
Smaller Ethernet frames that reduce overhead and improve performance
Larger Ethernet frames that reduce overhead and increase efficiency
41
Which 802.11b/g channel operates at 2437 MHz?
Channel 6
Channel 11
Channel 3
Channel 1
42
Which protocol provides centralized validation for users attempting to access a router or NAS?
IPsec
TACACS+
Kerberos
RADIUS
43
Which of the following could be an advantage of a private cloud?
More elastic
Cheaper to build
Stronger security
More scalable
44
Which layer is responsible for managing policies and how does it communicate with other layers?
The infrastructure layer; with management planes by direct routing protocol
The application layer; it communicates with the infrastructure layer
The control layer; it communicates with applications and switches
The management plane; with application and infrastructure layers
45
Which backup method is preferred for its speed in restoring data during a recovery operation, and why?
Incremental
Snapshot
Differential
Full
46
Which of the following connection-oriented protocols offers guaranteed delivery?
FTP
TCP
POP
IP
47
What is the impact of channel overlap in a wireless network?
Decreased network latency
Decreased signal strength
Increased power usage
Reduced network throughput
48
What cable that offers the most resistance to crosstalk?
Shielded mesh
Shielded twisted-pair
Multimode fiber-optic
UTP
49
What role does SNMP play in identifying network issues related to high latency and jitter?
It reduces network congestion.
It simplifies network configurations.
It encrypts network traffic.
It provides real-time monitoring and alerts
50
Which of the following topology types offers the greatest amount of redundancy?
Point-to-point
Mesh
Star
Spine and Leaf
51
Which type of media is used to connect telecommunication rooms, server rooms, and remote locations and offices?
PLC (Programmable Logic Controller)
Tracer
Plenum
Vertical
52
What does a content switch primarily do in a network?
It distributes incoming data to specific application servers.
It provides network redundancy.
It routes data based on IP addresses.
It filters traffic based on MAC addresses.
53
What is the purpose of Dynamic ARP Inspection (DAI) on a switch?
To allow all ARP requests
To increase network speed
To manage VLAN configurations
To protect ports from ARP spoofing attacks
54
Which organization is looked upon for definitions of cloud computing, including the three service models?
NIST (National Institute of Standards and Technology)
FERPA (Family Educational Rights and Privacy Act)
W3C (World Wide Web Consortium)
DoD (Department of Defense)
55
Which of the following DNS record types is used to store information for IPv6 (128-bit) addresses?
A
TXT
MX
AAAA
56
Which of the following switches can be used with
ipconfig
to release the IPv6 address on the specified adapter?
/unfetter
/flush6
/release
/release6
57
What type of cable is used to connect two switches directly, without a special port?
Fiber optic cable
Coaxial cable
Straight-through cable
Crossover cable
58
Cloud computing is often used to offload traffic to a cloud provider if your own servers are overloaded This is known as
Metering
Elasticity
Cloud bursting
Tenacity
59
What is the primary function of NTP (Network Time Protocol)?
It is used to access shared folders on a Linux system.
It is used to communicate utilization information to a central manager.
It provides a mechanism for sharing authentication information.
It is used to communicate time-synchronization information between systems.
60
At which Open Systems Interconnection (OSI) layer would you troubleshoot network cabling issues?
Physical
Session
Network
Data Link
61
Why is it necessary to change default credentials on network devices?
To simplify device configuration
To improve device performance
To prevent unauthorized access by using common, well-known credentials
To comply with user preferences
62
What does MTBF (Mean Time Between Failures) measure?
The anticipated incidence of failure of a system or a component
The effectiveness of disaster recovery plans
The average time required to repair a system
The total downtime of a system
63
In order for cloud computing to be able to scale, which of the following is required?
Malleability
Pliability
Rigidity
Elasticity
64
Which of the following best describes the characteristics and typical applications of a point-to-point network topology?
connects multiple devices to a central hub, offering high scalability
connects multiple devices in a ring configuration with moderate scalability
uses a single shared communication link for all devices
connects two devices directly with a dedicated link
65
What is the cabling that runs from the wall plate or network connection to the telecommunications closet?
Horizontal
Intermediate
Backbone
Vertical
66
Which of the following connectors are used with UTP media?
UPC
RJ-45
LC
APC
67
How does the spine and leaf model ensure consistent latency and efficient traffic distribution in datacenters?
Bus topology that minimizes the number of hops between devices
Star topology with centralized switches
Full-mesh topology where each leaf switch connects to every spine switch
Ring topology and fixed paths for data transmission
68
You are using channel 1 (2412 MHz). What RF range would be used if you switched to channel 3?
2417
2427
2408
2422
69
Why is it most important to disable unnecessary services on a server?
To increase network traffic
To simplify server management
To close potential entry points that could be exploited by attackers
To increase server performance
70
Which of the following best describes a zero-day attack?
A type of phishing attack
An attack using outdated software
An exploit that uses a vulnerability on the same day it is discovered
An attack that occurs due to user negligence
71
Why is monitoring network performance baselines critical for effective network management?
To establish a point of reference for identifying deviations
To identify ways to increase network traffic
To predict hardware failures
To simplify network configurations
72
The 802.11a standard supports how many nonoverlapping channels?
8
4
12
48
73
At which Open Systems Interconnection (OSI) layer does a router operate?
Layer 5
Layer 3
Layer 2
Layer 4
74
When changing a new wireless AP to 128-bit encryption, how must the client system be configured?
client wireless security settings must be set to autodetect
client systems must be set to 128-bit encryption
Wireless security does not support 128-bit encryption
client system inherits security settings from the AP
75
Which of the following is considered a vulnerability scanner?
nmap
Blackhole
netstat
OVAL
76
What are the key differences between straight-through and crossover cables?
Straight-through cables are for high-speed data transmission
ST are for connecting different devices; CO are for similar devices
Straight-through cables are for wireless, crossover for wired connections
Straight-through cables are interchangeable with crossover cables
77
Which key feature of Zero Trust Architecture (ZTA) involves continuously monitoring and verifying trustworthiness?
Continuous authentication; it ensures that permissions adjust dynamically
Policy-based authentication; it enforces multifactor authentication
Least privilege; it limits access to only what is necessary
Microsegmentation; it reduces lateral movement within the network
78
Which attack involves tricking a DNS server into accepting and caching false information about a domain’s address?
Cross-site scripting
DNS poisoning
ARP spoofing
SQL injection
79
Which Open Systems Interconnection (OSI) layer handles error detection and correction?
Data Link
Transport
Network
Physical
80
Which of the following is the primary benefit of using a Virtual Private Network (VPN) over the public Internet?
Improved error detection
Enhanced data security through encryption
Simplified network administration
Increased bandwidth
81
How does VLAN hopping compromise network security?
By altering DNS records
By encrypting data packets to prevent inspection
exploiting switch configurations to gain access to resources on other VLANs
By injecting malicious code into network traffic
82
Which feature of a switch enables it to improve network performance by reducing collisions?
Multilayer switching
Full-duplex communication
Load balancing
Error detection
83
What is the primary function of the presentation layer of the OSI model? Name two common data formats.
It manages sessions and translates data formats (e.g., JPEG, MP3)
It translates data formats and encrypts data (e.g., JPEG, ASCII)
It manages data compression and logical addressing (e.g., TIFF, EBCDIC)
It handles error detection and correction (e.g., ASCII, EBCDIC)
84
What are the advantages/disadvantages of mesh topology in wired network, regarding redundancy and cabling complexity?
Reduced cabling complexity and low costs, but poor scalability
Simple implementation and low costs, but poor redundancy
Redundancy with multiple connections, but high complexity and costs
Minimal cabling and easy troubleshooting but poor redundancy and high costs
85
What are the advantages and disadvantages of a full mesh topology in a wired network?
It is cost-effective and easy to maintain
It simplifies network design with minimal cabling
fault tolerance due to redundant paths but extensive cabling
high scalability with reduced cabling requirements
