Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
What is the TCP/IP layer that includes the User Datagram Protocol (UDP)?
The Transport layer in the TCP/IP model includes the User Datagram Protocol (UDP) and Transmission Control Protocol (TCP). UDP is a connectionless protocol used for fast, lightweight data transmission where reliability is not the priority (e.g., video streaming, VoIP).
Application layer handles end-user services but not transport mechanisms.
Network or internet layer deals with IP addressing and routing, not UDP.
Physical or network access layer concerns hardware transmission methods.
A computer network has software that tracks successful and unsuccessful connection attempts to the network in order to better identify attacks.
Which network security concept does this scenario address?
Accounting (also known as auditing or logging) is a network security concept that tracks user activities, including successful and failed authentication attempts, system changes, and resource access. This helps in detecting and mitigating security breaches.
Authentication verifies user identity but does not track activity.
Availability ensures systems remain operational.
Authorization controls user permissions but does not log activities.
An organization has experienced rogue access points in the past and wants to take actions to mitigate this type of attack.
What should this organization do?
Monitor mode scanning allows administrators to detect unauthorized or rogue access points broadcasting in the network. This technique, along with wireless intrusion detection systems (WIDS), helps identify and block unauthorized devices.
Requiring complex passwords enhances security but does not prevent rogue APs.
Server-side validation secures applications, not wireless networks.
Disallowing ICMP packets is a security measure but does not address rogue APs.
What is the component of the CIA triad for IT security that requires that IP packets be retransmitted if the receiving host has an invalid checksum value?
Integrity in the CIA (Confidentiality, Integrity, Availability) triad ensures that data is not altered in an unauthorized manner. In networking, integrity mechanisms such as checksums, message authentication codes (MACs), and digital signatures verify that transmitted data has not been tampered with. If an IP packet has an invalid checksum, the system detects corruption and requests retransmission, ensuring data integrity.
Confidentiality protects against unauthorized access but does not ensure data consistency.
Availability ensures that resources are accessible but does not verify data correctness.
Consistency is not a formal component of the CIA triad.
When setting up a network, a technician needs a router that connects computers together and connects computers to the internet.
Which router should be used?
A broadband router is a type of network router that connects multiple computers within a local network while also providing internet access. It functions as a gateway between the local network and the internet by handling data packet transmission and routing. Broadband routers are widely used in small offices and homes because they offer essential networking services, including DHCP, NAT, and sometimes wireless connectivity.
Inter-provider border routers are used by ISPs to route data between different providers and do not serve as an internet gateway for end users.
Subscriber edge routers are typically deployed at the edge of an ISP's network to connect subscriber networks but do not provide full internet routing functionalities.
Core routers operate at the backbone level of a network, facilitating high-speed data transfer but not connecting end-user devices directly.
62 questions covering all exam domains, starting from $20
3 domains from the WGU Network-and-Security-Foundation exam outline, with approximate weightings. Every sample question above is tagged with the domain it comes from
This section of the exam measures skills of Network Support Technicians and describes how to choose suitable approaches that follow security policies and industry rules. It explains how organizations apply required standards and how basic compliance methods help reduce risks. Learners understand how to determine effective solutions that keep systems secure and properly maintained.
This section of the exam measures skills of IT Support Specialists and outlines the essential elements of network systems. It introduces how networks operate through devices, connections, and communication processes. Learners receive a simple and clear understanding of the main networking concepts used in current technology settings.
This section of the exam measures skills of Network Support Technicians and highlights the core practices used to protect organizational information. It explains how security measures keep operations running, ensure proper access to data, and maintain confidentiality. Learners see how these foundational security concepts contribute to a reliable and well protected network environment.
Common questions about the exam itself
