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WGU D402 OBJECTIVE ASSESSMENT V1 & V2 NEWEST 2026
TEST BANK| D402 COMMUNITY AND PUBLIC HEALTH OA
EXAM WITH COMPLETE REAL EXAM QUESTIONS AND
CORRECT VERIFIED ANSWERS/ ALREADY GRADED A+ (MOST
RECENT!!)
1. A medium-sized organization is expanding its network infrastructure
to support hundreds of new employees while maintaining secure
communication between departments. During the planning process,
the network administrator explains that devices must be able to
communicate efficiently using standardized protocols regardless of the
manufacturer. Which networking model provides the conceptual
framework that standardizes how data is transmitted across a network?
A. OSI (Open Systems Interconnection) Model
B. Software Development Life Cycle (SDLC)
C. Agile Framework
D. CIA Triad
Answer: A
Rationale: The OSI model provides a standardized framework for
network communication by dividing networking functions into seven
layers.
2. A user enters a website address into a web browser to access an
online banking application. Before the browser can establish a
connection with the web server, the domain name must be translated
into an IP address. Which network service performs this function?
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A. Dynamic Host Configuration Protocol (DHCP)
B. Domain Name System (DNS)
C. File Transfer Protocol (FTP)
D. Simple Mail Transfer Protocol (SMTP)
Answer: B
Rationale: DNS translates human-readable domain names into IP
addresses that computers use to communicate.
3. An organization wants all employee computers to automatically
receive IP addresses, subnet masks, default gateways, and DNS server
information whenever they connect to the corporate network. Which
protocol provides this functionality?
A. Hypertext Transfer Protocol (HTTP)
B. Secure Shell (SSH)
C. Dynamic Host Configuration Protocol (DHCP)
D. Internet Control Message Protocol (ICMP)
Answer: C
Rationale: DHCP automatically assigns network configuration
information to client devices.
4. A security administrator wants to ensure that confidential company
data transmitted across the Internet cannot be intercepted and read by
unauthorized individuals. Which security technology provides this
protection?
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A. Encryption
B. Compression
C. Load balancing
D. Network Address Translation (NAT)
Answer: A
Rationale: Encryption protects data confidentiality by converting
readable information into an unreadable format.
5. A company deploys a firewall between its internal network and the
Internet to reduce cybersecurity risks. What is the primary purpose of a
firewall?
A. To monitor and control incoming and outgoing network traffic
according to defined security rules.
B. To permanently store company backups.
C. To automatically assign IP addresses to client computers.
D. To replace antivirus software on every workstation.
Answer: A
Rationale: Firewalls filter network traffic and enforce security policies
by allowing or blocking connections.
6. A cybersecurity analyst discovers that an attacker has sent thousands
of malicious requests to a company's web server, causing legitimate
users to experience slow response times and service interruptions.
Which type of cyberattack is most likely occurring?
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A. Phishing attack
B. Denial-of-Service (DoS) attack
C. SQL Injection
D. Password spraying
Answer: B
Rationale: A DoS attack overwhelms a system with excessive traffic,
making services unavailable to legitimate users.
7. An employee receives an email claiming to be from the company's IT
department requesting immediate verification of login credentials
through a provided hyperlink. The email contains urgent language and
appears convincing, but it was actually sent by a cybercriminal. Which
type of attack is this?
A. Brute-force attack
B. Phishing attack
C. Buffer overflow attack
D. Man-in-the-middle attack
Answer: B
Rationale: Phishing attacks use fraudulent communications to trick
users into revealing sensitive information.
8. A network administrator implements Multi-Factor Authentication
(MFA) for all employees accessing cloud applications. Which statement
best describes the primary benefit of MFA?
WGU D402 OBJECTIVE ASSESSMENT V1 & V2 NEWEST 2026
TEST BANK| D402 COMMUNITY AND PUBLIC HEALTH OA
EXAM WITH COMPLETE REAL EXAM QUESTIONS AND
CORRECT VERIFIED ANSWERS/ ALREADY GRADED A+ (MOST
RECENT!!)
1. A medium-sized organization is expanding its network infrastructure
to support hundreds of new employees while maintaining secure
communication between departments. During the planning process,
the network administrator explains that devices must be able to
communicate efficiently using standardized protocols regardless of the
manufacturer. Which networking model provides the conceptual
framework that standardizes how data is transmitted across a network?
A. OSI (Open Systems Interconnection) Model
B. Software Development Life Cycle (SDLC)
C. Agile Framework
D. CIA Triad
Answer: A
Rationale: The OSI model provides a standardized framework for
network communication by dividing networking functions into seven
layers.
2. A user enters a website address into a web browser to access an
online banking application. Before the browser can establish a
connection with the web server, the domain name must be translated
into an IP address. Which network service performs this function?
,2|Page
A. Dynamic Host Configuration Protocol (DHCP)
B. Domain Name System (DNS)
C. File Transfer Protocol (FTP)
D. Simple Mail Transfer Protocol (SMTP)
Answer: B
Rationale: DNS translates human-readable domain names into IP
addresses that computers use to communicate.
3. An organization wants all employee computers to automatically
receive IP addresses, subnet masks, default gateways, and DNS server
information whenever they connect to the corporate network. Which
protocol provides this functionality?
A. Hypertext Transfer Protocol (HTTP)
B. Secure Shell (SSH)
C. Dynamic Host Configuration Protocol (DHCP)
D. Internet Control Message Protocol (ICMP)
Answer: C
Rationale: DHCP automatically assigns network configuration
information to client devices.
4. A security administrator wants to ensure that confidential company
data transmitted across the Internet cannot be intercepted and read by
unauthorized individuals. Which security technology provides this
protection?
,3|Page
A. Encryption
B. Compression
C. Load balancing
D. Network Address Translation (NAT)
Answer: A
Rationale: Encryption protects data confidentiality by converting
readable information into an unreadable format.
5. A company deploys a firewall between its internal network and the
Internet to reduce cybersecurity risks. What is the primary purpose of a
firewall?
A. To monitor and control incoming and outgoing network traffic
according to defined security rules.
B. To permanently store company backups.
C. To automatically assign IP addresses to client computers.
D. To replace antivirus software on every workstation.
Answer: A
Rationale: Firewalls filter network traffic and enforce security policies
by allowing or blocking connections.
6. A cybersecurity analyst discovers that an attacker has sent thousands
of malicious requests to a company's web server, causing legitimate
users to experience slow response times and service interruptions.
Which type of cyberattack is most likely occurring?
, 4|Page
A. Phishing attack
B. Denial-of-Service (DoS) attack
C. SQL Injection
D. Password spraying
Answer: B
Rationale: A DoS attack overwhelms a system with excessive traffic,
making services unavailable to legitimate users.
7. An employee receives an email claiming to be from the company's IT
department requesting immediate verification of login credentials
through a provided hyperlink. The email contains urgent language and
appears convincing, but it was actually sent by a cybercriminal. Which
type of attack is this?
A. Brute-force attack
B. Phishing attack
C. Buffer overflow attack
D. Man-in-the-middle attack
Answer: B
Rationale: Phishing attacks use fraudulent communications to trick
users into revealing sensitive information.
8. A network administrator implements Multi-Factor Authentication
(MFA) for all employees accessing cloud applications. Which statement
best describes the primary benefit of MFA?
