OA Exams
It is a network of users that share computer resources in a limited area.
a) LANb) WANc) MANd) SAN
Correct Answer: a) LAN
Explanation: A LAN (Local Area Network) is a network in a limited geographical area.
A set of rules established for users to exchange information.
a) Protocolb) Topologyc) Networkd) Encryption
Correct Answer: a) Protocol
Explanation: A protocol defines rules for communication across a network.
How are Local Area Networks (LANs) defined?
a) By speed and sizeb) By protocol and topologyc) By hardwared) By the number of users
Correct Answer: b) By protocol and topology
Explanation: LANs are typically defined by the protocols used and the topology that determines how devices are interconnected.
The network architecture used to interconnect networking equipment.
a) Topologyb) Protocolc) Bandwidthd) Router
Correct Answer: a) Topology
Explanation: Topology refers to the physical or logical layout of a network.
The most common topologies for LANs are?
a) Mesh, Star, Ringb) Bus, Ring, Starc) Tree, Mesh, Ringd) Hub, Star, Bus
Correct Answer: b) Bus, Ring, Star
Explanation: The bus, ring, and star topologies are the most common network topologies.
Which topology uses a token that circulates around the network?
a) Busb) Starc) Token Ringd) Mesh
Correct Answer: c) Token Ring
Explanation: Token Ring topology uses a token that passes through the network to control access.
A network where each device ensures access for message transmission at regular intervals.
a) Busb) Token Ringc) Stard) Mesh
Correct Answer: b) Token Ring
Explanation: Token Ring is a deterministic network where devices get access in a fixed order.
What is the disadvantage of Token Ring topology?
a) Expensive to installb) Difficult to troubleshootc) Token pattern errors can stop the networkd) Difficult to expand
Correct Answer: c) Token pattern errors can stop the network
Explanation: If a token pattern is corrupted, it may stop circulating and halt the network.
What is the solution to Token Ring maintenance issues?
a) Replace all devicesb) Use a Token Ring hubc) Switch to a bus topologyd) Use repeaters
Correct Answer: b) Use a Token Ring hub
Explanation: A Token Ring hub manages the token passing and improves network reliability.
A coaxial cable that is looped through each networking device to transmit data in a bus topology is called?
a) Fiber opticb) ThinNetc) ThickNetd) Token cable
Correct Answer: b) ThinNet
Explanation: ThinNet is a type of coaxial cable used in bus topology.
All devices on this topology can see each other’s data traffic.
a) Meshb) Starc) Busd) Token Ring
Correct Answer: c) Bus
Explanation: In bus topology, data is broadcast to all devices connected on the same cable.
In this topology, devices must wait for transmission pauses.
a) Busb) Starc) Meshd) Token Ring
Correct Answer: a) Bus
Explanation: In a bus topology, only one device can transmit at a time, and others must wait.
What is a disadvantage of the bus topology?
a) Expensive to maintainb) Data corruption from simultaneous transmissionsc) Hard to installd) Difficult to connect devices
Correct Answer: b) Data corruption from simultaneous transmissions
Explanation: If multiple devices transmit simultaneously, data collisions can occur.
Which topology is rarely used in modern networks?
a) Starb) Busc) Meshd) Token Ring
Correct Answer: b) Bus
Explanation: Bus topology is rarely used due to its inefficiency and difficulties with data transmission.
What is the most common topology in today’s LANs?
a) Starb) Busc) Meshd) Ring
Correct Answer: a) Star
Explanation: Star topology is widely used in modern LANs due to its scalability and ease of troubleshooting.
In this topology, twisted-pair cables with modular plugs are used.
Explanation: Star topology uses twisted-pair cables for easy connection to a central switch or hub.
What facilitates data transfer between devices in a star topology?
a) Routerb) Hub or switchc) Cable modemd) Firewall
Correct Answer: b) Hub or switch
Explanation: In a star topology, hubs or switches manage data flow between devices.
A hub transmits data to:
a) One deviceb) All connected devicesc) A switchd) A router
Correct Answer: b) All connected devices
Explanation: A hub broadcasts data to all devices in the network.
A device that repeats signals in a network:
a) Hubb) Switchc) Repeaterd) Modem
Correct Answer: a) Hub
Explanation: Hubs act as multiport repeaters, forwarding data to all connected devices.
What stores the physical address for each device in a star network?
a) Hubb) Switchc) Routerd) Server
Correct Answer: b) Switch
Explanation: A switch stores the MAC addresses of devices connected to its ports and directs traffic accordingly.