ICTN 2150 MODULE 2 EXAM REVIEW
Data-link layer - Answers - responsible for node-to-node data transfer between directly
connected network nodes.
Data-link layer sublayers - Answers - responsible for node-to-node data transfer
between directly connected network nodes.
Topologies of WAN - Answers - point-to-point, hub-and-spoke, and mesh
point-to-point - Answers - a direct, private, and secure data connection between two
specific locations, such as offices or data centers, bypassing the public internet
Hub-and-Spoke - Answers - a centralized network architecture where peripheral,
isolated networks (spokes) connect to a central, highly secure network (hub)
mesh - Answers - a modern, distributed, and composable security approach that allows
disparate security tools to interoperate and share intelligence across a hybrid,
decentralized environment
star - Answers - Cloud Security Alliance (CSA) Security, Trust, Assurance, and Risk
extended star - Answers - a network structure that connects multiple basic star networks
together by connecting their central hubs or switches to a main, central node.
half-duplex
what does it do and where is it found? - Answers - a communication mode allowing data
to travel in both directions, but only one direction at a time on a single channel
full-duplex
what does it do and where is it found? - Answers - a communication method allowing
data to be sent and received simultaneously between two devices, enabling real-time,
two-way interaction without interruptions or collision
Carrier Sense Multiple Access with Collision Detection
What does it do and where is it found? - Answers - allows devices on a shared network
(like early Ethernet) to detect collisions when multiple stations transmit simultaneously
Carrier Sense Multiple Access with Collision Avoidance
What does it do and where is it found? - Answers - reduces data collisions in wireless
networks by requiring devices to "sense" if a channel is idle before transmitting and
using random backoff timers to avoid simultaneous transmission
Data-link layer - Answers - responsible for node-to-node data transfer between directly
connected network nodes.
Data-link layer sublayers - Answers - responsible for node-to-node data transfer
between directly connected network nodes.
Topologies of WAN - Answers - point-to-point, hub-and-spoke, and mesh
point-to-point - Answers - a direct, private, and secure data connection between two
specific locations, such as offices or data centers, bypassing the public internet
Hub-and-Spoke - Answers - a centralized network architecture where peripheral,
isolated networks (spokes) connect to a central, highly secure network (hub)
mesh - Answers - a modern, distributed, and composable security approach that allows
disparate security tools to interoperate and share intelligence across a hybrid,
decentralized environment
star - Answers - Cloud Security Alliance (CSA) Security, Trust, Assurance, and Risk
extended star - Answers - a network structure that connects multiple basic star networks
together by connecting their central hubs or switches to a main, central node.
half-duplex
what does it do and where is it found? - Answers - a communication mode allowing data
to travel in both directions, but only one direction at a time on a single channel
full-duplex
what does it do and where is it found? - Answers - a communication method allowing
data to be sent and received simultaneously between two devices, enabling real-time,
two-way interaction without interruptions or collision
Carrier Sense Multiple Access with Collision Detection
What does it do and where is it found? - Answers - allows devices on a shared network
(like early Ethernet) to detect collisions when multiple stations transmit simultaneously
Carrier Sense Multiple Access with Collision Avoidance
What does it do and where is it found? - Answers - reduces data collisions in wireless
networks by requiring devices to "sense" if a channel is idle before transmitting and
using random backoff timers to avoid simultaneous transmission
