Microsoft MTA Networking Fundamentals (Exam 98-366) — Questions and Answers

Question 1: Which wireless network standard introduced MIMO (Multiple Input, Multiple Output) technology?

802.11g
802.11n (Correct answer)
802.11a
802.11b

Correct answer: 802.11n

IEEE 802.11n introduced MIMO technology, which uses multiple antennas to transmit and receive data simultaneously, significantly increasing throughput and range.

Question 2: A network administrator needs to provide internet access to guest users without exposing the corporate network. What is the best approach?

Use MAC filtering on the corporate SSID
Give guests the Wi-Fi password for the corporate network
Create a separate guest VLAN with internet-only access and firewall isolation (Correct answer)
Set up a second ISP connection

Correct answer: Create a separate guest VLAN with internet-only access and firewall isolation

A guest VLAN with firewall rules provides internet access to visitors while isolating them from internal corporate resources.

Question 3: A company wants to ensure that only corporate laptops can connect to their Wi-Fi network. Which technology should they implement?

WPA2-Personal with a complex passphrase
802.1X authentication with certificates (Correct answer)
MAC address filtering alone
Hiding the SSID

Correct answer: 802.1X authentication with certificates

802.1X with certificate-based authentication ensures only managed devices with valid certificates can authenticate to the network.

Question 4: Which address range is used by APIPA (Automatic Private IP Addressing) when a DHCP server is unreachable?

192.168.0.0/16
169.254.0.0/16 (Correct answer)
10.0.0.0/8
172.16.0.0/12

Correct answer: 169.254.0.0/16

APIPA assigns addresses in the 169.254.0.0/16 range when a DHCP server cannot be contacted.

Question 5: How many usable host addresses are available in a /28 subnet?

16
30
32
14 (Correct answer)

Correct answer: 14

A /28 subnet has 2^4 = 16 addresses, minus 2 (network and broadcast) = 14 usable hosts.

Question 6: How do Microsoft Networking Essentials Exam professionals build trust with clients or stakeholders?

Through marketing only
Through competitive pricing only
By always agreeing with clients
Through consistent competence, transparency, reliability, and ethical behavior (Correct answer)

Correct answer: Through consistent competence, transparency, reliability, and ethical behavior

This is fundamental to Microsoft Networking Essentials Exam practice. Through consistent competence, transparency, reliability, and ethical behavior represents the professional standard for communication in the Microsoft Networking Essentials Exam certification framework.

Question 7: An Exposure Factor (EF) of 0.40 means:

The threat occurs 40 times per year
An asset loses 40% of its value if a threat occurs (Correct answer)
40% of assets are at risk
40% of controls are ineffective

Correct answer: An asset loses 40% of its value if a threat occurs

EF represents the percentage of asset value lost due to a specific threat event.

Question 8: Given the IP address 172.16.50.100/20, what is the network address?

172.16.48.0 (Correct answer)
172.16.50.0
172.16.32.0
172.16.64.0

Correct answer: 172.16.48.0

With a /20 mask, the third octet block size is 16; 50 falls in the 48–63 block, so the network address is 172.16.48.0.

Question 9: What is the purpose of the subnet mask in IP networking?

To encrypt IP packets
To distinguish the network portion from the host portion of an IP address (Correct answer)
To assign IP addresses automatically
To convert domain names to IP addresses

Correct answer: To distinguish the network portion from the host portion of an IP address

A subnet mask identifies which bits of an IP address represent the network and which represent the host, enabling routing decisions.

Question 10: What is the primary purpose of a DHCP server in a network?

Automatically assign IP configuration to clients (Correct answer)
Translate domain names to IP addresses
Encrypt data transmitted between hosts
Filter network traffic based on rules

Correct answer: Automatically assign IP configuration to clients

A DHCP server dynamically assigns IP addresses, subnet masks, default gateways, and DNS server addresses to network clients.

Question 11: What does a DMZ (Demilitarized Zone) represent in network architecture?

A wireless-only network zone
A completely isolated internal network segment
A network segment between the internet and internal network for hosting public-facing services (Correct answer)
A backup network for disaster recovery

Correct answer: A network segment between the internet and internal network for hosting public-facing services

A DMZ is a network segment that sits between the internet and the internal corporate network, used to host public-facing servers like web and email servers while protecting internal resources.

Question 12: How many subnets does a /28 mask create from a Class C network?

32
16 (Correct answer)
8
4

Correct answer: 16

A /28 borrows 4 bits from a Class C (/24) network, creating 2^4 = 16 subnets.

Question 13: What is the difference between a hub and a switch?

A hub is faster than a switch
A hub uses IP addresses; a switch uses MAC addresses
A hub broadcasts to all ports; a switch forwards only to the destination port (Correct answer)
A switch operates at Layer 1; a hub at Layer 2

Correct answer: A hub broadcasts to all ports; a switch forwards only to the destination port

A hub broadcasts incoming data to all connected ports (Layer 1), while a switch intelligently forwards data only to the specific port of the destination device using MAC addresses (Layer 2).

Question 14: Which protocol automatically assigns IP addresses to hosts on a network?

ICMP
DHCP (Correct answer)
DNS
ARP

Correct answer: DHCP

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, gateways, and DNS info to clients.

Question 15: How has digital technology transformed Microsoft Networking Essentials Exam practice?

It has replaced all traditional methods
It only affects large organizations
It has enhanced data collection, analysis, communication, and operational efficiency (Correct answer)
It has had no impact

Correct answer: It has enhanced data collection, analysis, communication, and operational efficiency

This is fundamental to Microsoft Networking Essentials Exam practice. It has enhanced data collection, analysis, communication, and operational efficiency represents the professional standard for technology in the Microsoft Networking Essentials Exam certification framework.

Question 16: An administrator needs to divide a 192.168.1.0/24 network into at least 6 subnets. What is the minimum prefix length required?

/26
/28
/25
/27 (Correct answer)

Correct answer: /27

A /27 borrows 3 bits from the host portion, creating 2^3 = 8 subnets, which meets the requirement of at least 6.

Question 17: During a risk assessment, an analyst rates threats based on gut feeling and experience rather than financial figures. This approach is called:

Quantitative risk analysis
Threat modeling
Residual risk analysis
Qualitative risk analysis (Correct answer)

Correct answer: Qualitative risk analysis

Qualitative analysis uses subjective ratings (e.g., High/Medium/Low) rather than exact monetary values.

Question 18: What is the valid host range for the subnet 10.0.0.128/25?

10.0.0.130 – 10.0.0.255
10.0.0.128 – 10.0.0.255
10.0.0.1 – 10.0.0.126
10.0.0.129 – 10.0.0.254 (Correct answer)

Correct answer: 10.0.0.129 – 10.0.0.254

The subnet 10.0.0.128/25 has network address 10.0.0.128 and broadcast 10.0.0.255, leaving 10.0.0.129–10.0.0.254 as valid hosts.

Question 19: What is the function of a repeater in a network?

Assign IP addresses
Filter network traffic
Amplify and regenerate signals to extend network range (Correct answer)
Connect different network types

Correct answer: Amplify and regenerate signals to extend network range

A repeater amplifies or regenerates network signals to extend the maximum distance a signal can travel without degradation.

Question 20: A technician suspects a duplex mismatch between a switch and a server NIC. What symptom would confirm this?

IP address conflicts on the subnet
High late collisions and poor throughput (Correct answer)
DHCP lease exhaustion
DNS resolution failures

Correct answer: High late collisions and poor throughput

Duplex mismatches cause late collisions and significantly reduced throughput because one side operates half-duplex.

Question 21: Which protocol provides connection-less, best-effort delivery of datagrams?

FTP
TCP
HTTPS
UDP (Correct answer)

Correct answer: UDP

UDP (User Datagram Protocol) provides connectionless, best-effort delivery without guarantees of delivery, ordering, or error checking, making it faster than TCP.

Question 22: How should an Microsoft Networking Essentials Exam professional approach a novel situation not covered by standard procedures?

Refuse to proceed
Improvise without documentation
Follow the closest standard procedure exactly
Apply foundational principles, assess risks, consult resources, and document the rationale for decisions (Correct answer)

Correct answer: Apply foundational principles, assess risks, consult resources, and document the rationale for decisions

This is fundamental to Microsoft Networking Essentials Exam practice. Apply foundational principles, assess risks, consult resources, and document the rationale for decisions represents the professional standard for practical in the Microsoft Networking Essentials Exam certification framework.

Question 23: When responding to a help desk ticket, which communication practice best reflects professional standards?

Respond only after fully resolving the issue to avoid giving false hope
Close the ticket automatically if no response is received within 24 hours
Use highly technical jargon to demonstrate expertise
Acknowledge the request promptly and provide regular status updates (Correct answer)

Correct answer: Acknowledge the request promptly and provide regular status updates

Prompt acknowledgment and regular updates keep the user informed and reflect professional communication standards.

Question 24: Which cable type uses light to transmit data and is immune to electromagnetic interference?

Fiber optic (Correct answer)
Coaxial
Cat 5e
Cat 6a

Correct answer: Fiber optic

Fiber optic cables transmit data as pulses of light through glass or plastic fibers, making them immune to electromagnetic interference (EMI) and capable of long-distance, high-speed transmission.

Question 25: What is a corrective action in Microsoft Networking Essentials Exam quality systems?

Blaming individuals for errors
Ignoring minor issues
A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence (Correct answer)
Temporary workarounds only

Correct answer: A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence

This is fundamental to Microsoft Networking Essentials Exam practice. A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence represents the professional standard for quality in the Microsoft Networking Essentials Exam certification framework.

Question 26: What is the purpose of PoE (Power over Ethernet)?

Deliver electrical power through Ethernet cables to devices (Correct answer)
Encrypt data over Ethernet
Connect devices across different network segments
Increase Ethernet cable speed

Correct answer: Deliver electrical power through Ethernet cables to devices

PoE (Power over Ethernet) delivers electrical power along with data through standard Ethernet cabling, eliminating the need for separate power supplies for devices like IP phones and wireless access points.

Question 27: What does 'due diligence' mean in the context of a network security assessment?

Thoroughly evaluating risks, controls, and compliance requirements before making recommendations (Correct answer)
Installing the latest software updates as the only required step
Implementing every possible security control regardless of cost
Deferring all security decisions to the client

Correct answer: Thoroughly evaluating risks, controls, and compliance requirements before making recommendations

Due diligence means conducting a thorough, structured evaluation of risks and existing controls before advising on security posture.

Question 28: What role does data analytics play in Microsoft Networking Essentials Exam practice?

It replaces professional judgment
It supports evidence-based decision making by identifying patterns and trends in relevant data (Correct answer)
It creates unnecessary complexity
It is only for IT professionals

Correct answer: It supports evidence-based decision making by identifying patterns and trends in relevant data

This is fundamental to Microsoft Networking Essentials Exam practice. It supports evidence-based decision making by identifying patterns and trends in relevant data represents the professional standard for technology in the Microsoft Networking Essentials Exam certification framework.

Question 29: A network administrator uses excessive technical jargon in a status email to business stakeholders. What is the most likely outcome?

The email will be forwarded to technical staff who can translate it
Stakeholders may misunderstand the message, lose confidence, or make uninformed decisions (Correct answer)
Stakeholders will request more technical detail in future communications
Stakeholders will appreciate the technical depth and trust the administrator more

Correct answer: Stakeholders may misunderstand the message, lose confidence, or make uninformed decisions

Jargon-heavy communication to non-technical audiences creates confusion and erodes confidence in IT's ability to communicate value.

Question 30: An organization decides to stop offering a particular online service because the security risks are too great to manage. This is an example of:

Risk acceptance
Risk mitigation
Risk transference
Risk avoidance (Correct answer)

Correct answer: Risk avoidance

Risk avoidance eliminates the risk entirely by choosing not to engage in the activity that creates it.

Question 31: Which address resolution protocol maps IP addresses to MAC addresses on a local network?

RARP
ARP (Correct answer)
DNS
NAT

Correct answer: ARP

ARP (Address Resolution Protocol) resolves IPv4 addresses to MAC addresses so frames can be delivered on the local network.

Question 32: Which class of IPv4 address uses the range 192.168.0.0 to 192.168.255.255 as private address space?

Class B
Class A
Class D
Class C (Correct answer)

Correct answer: Class C

Class C private addresses fall in the range 192.168.0.0–192.168.255.255, as defined by RFC 1918.

Question 33: What does the acronym NAT stand for in networking?

Network Address Translation (Correct answer)
Node Addressing Table
Network Access Technology
Network Authentication Transfer

Correct answer: Network Address Translation

NAT (Network Address Translation) maps private IP addresses to a public IP address, allowing multiple devices to share one public IP.

Question 34: When evaluating two competing network topology designs using evidence-based methods, which criterion provides the most objective comparison?

Which design looks simpler on paper
Measured performance against defined SLAs and quantified risk scores for each design (Correct answer)
Which design uses more familiar equipment brands
The personal preference of the senior engineer

Correct answer: Measured performance against defined SLAs and quantified risk scores for each design

Measuring against defined SLAs and quantifying risk provides objective, reproducible criteria that remove personal bias from design decisions.

Question 35: What is the broadcast address of the subnet 192.168.10.64/26?

192.168.10.127 (Correct answer)
192.168.10.255
192.168.10.95
192.168.10.128

Correct answer: 192.168.10.127

A /26 has a block size of 64; the 64 subnet spans .64–.127, so the broadcast address is 192.168.10.127.

Question 36: A department head requests faster Wi-Fi in their office. Before responding, what should a network administrator do?

Ask the department head to submit a formal budget request before any discussion
Assess current Wi-Fi performance data, identify root cause, then communicate findings and options (Correct answer)
Explain that Wi-Fi speeds cannot be improved without a full infrastructure replacement
Order new access points immediately to demonstrate responsiveness

Correct answer: Assess current Wi-Fi performance data, identify root cause, then communicate findings and options

Assessing performance data first ensures the response is accurate and solution options are relevant and cost-effective.

Question 37: Which Windows tool displays active TCP/UDP connections, listening ports, and associated process IDs?

ipconfig /all
arp -a
tracert
netstat -ano (Correct answer)

Correct answer: netstat -ano

The netstat -ano command lists all active connections and listening ports along with the process ID (PID) responsible for each.

Question 38: What is the maximum cable length for a standard Cat 5e Ethernet (100BASE-TX) run?

100 meters (Correct answer)
200 meters
150 meters
50 meters

Correct answer: 100 meters

The maximum recommended cable length for Cat 5e Ethernet (100BASE-TX) is 100 meters (328 feet) to ensure reliable signal quality.

Question 39: What is the primary function of a network switch?

Connect different networks together
Assign IP addresses to devices
Filter traffic based on IP addresses
Forward frames based on MAC addresses within a network (Correct answer)

Correct answer: Forward frames based on MAC addresses within a network

A network switch forwards Ethernet frames to the correct port based on the destination MAC address, operating at Layer 2 of the OSI model.

Question 40: What is the primary purpose of a patch panel in a network infrastructure?

Provide a central point for organizing and connecting network cables (Correct answer)
Assign IP addresses to devices
Amplify network signals
Route traffic between VLANs

Correct answer: Provide a central point for organizing and connecting network cables

A patch panel provides a centralized, organized termination point for network cabling, making it easier to manage and reconfigure network connections in a data closet.

Question 41: Which subnet mask allows the most hosts per subnet when applied to a Class C network?

255.255.255.224
255.255.255.128 (Correct answer)
255.255.255.240
255.255.255.192

Correct answer: 255.255.255.128

255.255.255.128 (/25) leaves 7 host bits, providing 126 usable hosts — the most among the options listed.

Question 42: What device operates at Layer 3 and forwards packets between different networks?

Hub
Bridge
Router (Correct answer)
Switch

Correct answer: Router

A router operates at Layer 3 (Network Layer) and uses IP addresses to forward packets between different networks, making routing decisions based on routing tables.

Question 43: Which of the following IPv4 addresses is a Class A private address?

172.32.0.1
192.169.0.1
10.200.50.1 (Correct answer)
169.254.1.1

Correct answer: 10.200.50.1

RFC 1918 defines 10.0.0.0/8 as the Class A private range; 10.200.50.1 falls within it.

Question 44: Which type of network topology connects all devices to a single central cable?

Bus topology (Correct answer)
Star topology
Ring topology
Mesh topology

Correct answer: Bus topology

In a bus topology, all devices connect to a single shared cable (the bus), and a break in the cable can bring down the entire network.

Question 45: What is the default subnet mask for a Class B IP address?

255.255.0.0 (Correct answer)
255.255.255.0
255.0.0.0
255.255.255.128

Correct answer: 255.255.0.0

Class B addresses use a default subnet mask of 255.255.0.0, providing 65,534 usable host addresses per network.

Microsoft MTA Networking Fundamentals (Exam 98-366)

The Microsoft Technology Associate (MTA) Networking Fundamentals exam (98-366) tests foundational knowledge of network infrastructure, hardware components, and protocols and services. It is an entry-level certification for candidates beginning an IT networking career.

Questions

45 min

Time Limit

70%

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