WGU D488 ACTUAL EXAM SCRIPT 2026
COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ 802.11h. Answer: Amendment to Wi-Fi standards that defines a
Dynamic Frequency Selection (DFS) mechanism to avoid
interference with radar and cellular communications in the 5 GHz
frequency band.
◉ 802.1p. Answer: IEEE standard defining a 3-bit (0 to 7) class of
service priority field within the 802.1Q format.
◉ 802.1q. Answer: The 802.1Q protocol is often used to tag frames
destined for different VLANs across trunk links.
◉ 802.1x. Answer: Standard for encapsulating EAP communications
over a LAN (EAPOL) to implement port-based authentication.
◉ 802.3 ethernet standards. Answer: Standards developed as the
IEEE 802.3 series describing media types, access methods, data
rates, and distance limitations at OSI layers 1 and 2 using xBASE-y
designations.
,◉ access control list (ACL). Answer: The collection of access control
entries (ACEs) that determines which subjects (user accounts, host
IP addresses, and so on) are allowed or denied access to the object
and the privileges given (read-only, read/write, and so on).
◉ access point (AP). Answer: A device that provides a connection
between wireless devices and can connect to wired networks,
implementing an infrastructure mode WLAN.
◉ access/edge layer. Answer: Lowest tier in a hierarchical network
topology acting as the attachment point for end systems.
◉ active-active. Answer: High availability cluster configuration
where all nodes are utilized continually.
◉ active-passive. Answer: High availability cluster configuration
where one or more nodes are only utilized during failover.
◉ ad hoc network. Answer: Type of wireless network where
connected devices communicate directly with each other instead of
over an established medium.
◉ address resolution protocol (ARP). Answer: Broadcast mechanism
by which the hardware MAC address of an interface is matched to an
IP address on a local network segment.
,◉ addressing. Answer: Unique identifier for a network node, such as
a MAC address, IPv4 address, or IPv6 address.
◉ adjacent channel interference (ACI). Answer: Troubleshooting
issue where access points within range of one another are
configured to use different but overlapping channels, causing
increased noise.
◉ administrative distance (AD). Answer: Metric determining the
trustworthiness of routes derived from different routing protocols.
◉ administratively down. Answer: Switch or router port that has
been purposefully disabled via the management interface.
◉ advanced persistent threat (APT). Answer: Threat actors with the
ability to craft novel exploits and techniques to obtain, maintain, and
diversify unauthorized access to network systems over a long
period.
◉ angled physical contact (APC). Answer: Fiber optic connector
finishing type that uses an angled polish for the ferrule.
, ◉ antenna type. Answer: Specially arranged metal wires that can
send and receive radio signals, typically implemented as either an
omnidirectional or a unidirectional type.
◉ anycast. Answer: IP delivery mechanism whereby a packet is
addressed to a single host from a group sharing the same address.
◉ application layer (Layer 7). Answer: OSI model layer providing
support to applications requiring network services (file transfer,
printing, email, databases, and so on).
◉ application programming interface (API). Answer: Methods
exposed by a script, program, or web application that allow other
scripts or apps to interact with it.
◉ arp command. Answer: Utility to display and modify contents of
host's cache of IP to MAC address mappings, as resolved by address
resolution protocol (ARP) replies.
◉ Network-based attack. Answer: An attack where an attacker with
access to the target local network segment redirects an IP address to
the MAC address of a computer that is not the intended recipient.
COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ 802.11h. Answer: Amendment to Wi-Fi standards that defines a
Dynamic Frequency Selection (DFS) mechanism to avoid
interference with radar and cellular communications in the 5 GHz
frequency band.
◉ 802.1p. Answer: IEEE standard defining a 3-bit (0 to 7) class of
service priority field within the 802.1Q format.
◉ 802.1q. Answer: The 802.1Q protocol is often used to tag frames
destined for different VLANs across trunk links.
◉ 802.1x. Answer: Standard for encapsulating EAP communications
over a LAN (EAPOL) to implement port-based authentication.
◉ 802.3 ethernet standards. Answer: Standards developed as the
IEEE 802.3 series describing media types, access methods, data
rates, and distance limitations at OSI layers 1 and 2 using xBASE-y
designations.
,◉ access control list (ACL). Answer: The collection of access control
entries (ACEs) that determines which subjects (user accounts, host
IP addresses, and so on) are allowed or denied access to the object
and the privileges given (read-only, read/write, and so on).
◉ access point (AP). Answer: A device that provides a connection
between wireless devices and can connect to wired networks,
implementing an infrastructure mode WLAN.
◉ access/edge layer. Answer: Lowest tier in a hierarchical network
topology acting as the attachment point for end systems.
◉ active-active. Answer: High availability cluster configuration
where all nodes are utilized continually.
◉ active-passive. Answer: High availability cluster configuration
where one or more nodes are only utilized during failover.
◉ ad hoc network. Answer: Type of wireless network where
connected devices communicate directly with each other instead of
over an established medium.
◉ address resolution protocol (ARP). Answer: Broadcast mechanism
by which the hardware MAC address of an interface is matched to an
IP address on a local network segment.
,◉ addressing. Answer: Unique identifier for a network node, such as
a MAC address, IPv4 address, or IPv6 address.
◉ adjacent channel interference (ACI). Answer: Troubleshooting
issue where access points within range of one another are
configured to use different but overlapping channels, causing
increased noise.
◉ administrative distance (AD). Answer: Metric determining the
trustworthiness of routes derived from different routing protocols.
◉ administratively down. Answer: Switch or router port that has
been purposefully disabled via the management interface.
◉ advanced persistent threat (APT). Answer: Threat actors with the
ability to craft novel exploits and techniques to obtain, maintain, and
diversify unauthorized access to network systems over a long
period.
◉ angled physical contact (APC). Answer: Fiber optic connector
finishing type that uses an angled polish for the ferrule.
, ◉ antenna type. Answer: Specially arranged metal wires that can
send and receive radio signals, typically implemented as either an
omnidirectional or a unidirectional type.
◉ anycast. Answer: IP delivery mechanism whereby a packet is
addressed to a single host from a group sharing the same address.
◉ application layer (Layer 7). Answer: OSI model layer providing
support to applications requiring network services (file transfer,
printing, email, databases, and so on).
◉ application programming interface (API). Answer: Methods
exposed by a script, program, or web application that allow other
scripts or apps to interact with it.
◉ arp command. Answer: Utility to display and modify contents of
host's cache of IP to MAC address mappings, as resolved by address
resolution protocol (ARP) replies.
◉ Network-based attack. Answer: An attack where an attacker with
access to the target local network segment redirects an IP address to
the MAC address of a computer that is not the intended recipient.
