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CompTIA Network+ > Network Basics > Flashcards

Network Basics Flashcards

1
Q

A connection between machines.

A

Network

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2
Q

An end-user device that has access to the network.

Examples include:
- Workstation
- Laptop
- Tablet
- Smartphone
- Television
- Server
- Other terminal device

A

Client

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3
Q

A device that provides resources to the rest of the network.

A

Server

Examples include:
- E-mail server
- Web server
- File server
- Chat server
- Print Server

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4
Q

Older technology that connects networked devices receiving information in one port and rebroadcasts it out to all other ports.

Issue however is because this can be daisy-chained to open up more ports, network errors may occur.

A

Hub

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5
Q

Device that allows wireless devices to connect with wired network.

Common use cases include:
- Homes
- Small businesses
- some large companies

A

Wireless Access Point (WAP)

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6
Q

Connects networked devices like clients and servers (like a hub).

Use Cases:
- Learns which devices are on which port
- Forwards traffic received from a port to a destination port based on the device’s MAC address
- Provides more security and efficiently uses available bandwidth

A

Switch

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7
Q

Connects two different networks together by using Internet Protocol (IP) address to determine where traffic goes.

A

Router

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8
Q

Used to connect two devices or a device to a port.

Each has its strengths and limitations like bandwidth, distance, and cost to install/maintain.

Made from:
- Copper cable
- Fiber optic cable
- Radio frequency waves (WiFi)

A

Media

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9
Q

Physically connects networks together so home networks have access to the outside world.

Examples include:
- Leased lines
- DSL
- Cable
- Fiber Optic
- Satellite
- Cellular
- Microwave

A

Wide Area Network (WAN) Link

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10
Q

Network resource model that dedicates a device to provide customers access to a business resources.

A

Client/Server Model

Opposite of peer-to-peer.

Benefits:
- Centralized administration
- Easier to manage
- Better to scale

Drawbacks:
- Higher cost
- Requires dedicated resources
- Requires network operating system

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11
Q

A network model that is used to share resources between users directly.

A

Peer-to-Peer Model

Opposite of client/server.

Benefits:
- Low cost
- No dedicated resources required
- No specialized operating system required

Drawbacks:
- Decentralized management
- Inefficient for large networks
- Poor scalability

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12
Q

Smallest wired/wireless network that covers the least amount of area.

Examples:
- Bluetooth
- USB hard drive to laptop
- Firewire videocamera to computer

A

Personal Area Network (PAN)

Use Cases:
- Listening to music from phone to the car via Bluetooth
- Retrieving files via flashdrive

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13
Q

Connects devices in a limited distance.

Examples:
- Small office
- 1 floor of the office

Consists of:
- Ethernet (IEEE 802.3)
- WiFi Networks (IEEE 802.11)

A

Local Area Network (LAN)

Use Cases:
- Playing video games amongst each other at home
- Connecting work computers amongst each other to share files
- Getting software updates from home Wi-Fi to the car

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14
Q

Connects building-centric LANs.

Examples:
- University
- Industrial Park
- Business Park

A

Campus Area Network (CAN)

Use Cases:
- Cal Poly Wi-Fi

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15
Q

Connects scattered locations across a city.

Examples:
- City departments like a police department
- Community college with campuses spread across a county

A

Metropolitan Area Network (MAN)

Use Cases:
- Cal Poly Wi-Fi and extensions that reach to the farmland

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16
Q

Connects geographically separate internal networks.

Examples:
- The Internet
- Leased lines or Virtual Private Networks tunneled over the Internet
- Covers distances around country or the world

A

Wide Area Network (WAN)

Use Cases:
- Businesses in one state/country connected with another office from a different state/country
- Being able to connect to cellular satellite to listen to music in the car

17
Q

Topology that describes how networks are physically connected by media.

A

Physical Topology

18
Q

Topology that describes the actual traffic flows in the network.

A

Logical Topology

19
Q

Outdated way of connecting devices by using cables running through an area that required network connectivity.

Easy for traffic to collide with each other because they enter into a single domain.

A

Bus Topology

20
Q

Uses a cable running in a circular loop.

Each device is connected to the ring however collisions were avoided by each device having a turn to communicate.

A

Ring Topology

Use Case:
- FDDI (Fiber Networks) = uses two counter-rotating rings creating redundancy

21
Q

Most popular physical LAN topology that has devices connect to a single point.

Commonly used with Ethernet cabling but can be wireless/fiber as well.

If central device fails, then entire network fails.

A

Star Topology

22
Q

Used to connect multiple sites.

Similar to Star but with WAN links instead of LAN connections.

Not redundant, if central office fails, the whole network fails.

A

Hub-and-Spoke Topology

23
Q

Most redundant topology where every device is connected to each other.

Optimal routing is available however this is very expensive to maintain and operate.

A

Full-Mesh Topology

24
Q

Hybrid of full-mesh and hub-and-spoke topologies.

Provides optimal routes between some sites, while avoiding the expense of connecting every site.

Need to know network traffic patterns to design it effectively.

A

Partial-Mesh Topology

25
Q

Most common type of wireless network.

Requires centralized management.

Uses a wireless access point as a centralized point like a star topology.

Supports wireless security controls.

A

Infrastructure Mode

26
Q

Decentralized wireless network.

No routers or access points are required.

Forwarding decisions for data on the network are made dynamically.

Allows creation/joining of networks “on-the-fly”.

Creates peer to peer connections.

A

Ad Hoc Mode

27
Q

A wireless network architecture that interconnects different types of nodes and devices.

Consists of clients, routers, and gateways.

Utilizes different radio frequencies to extend and expand access.

Reliable and redundant connections.

A

Wireless Mesh Topology

28
Q

The interconnection of devices through the internet.

A

Internet of Things

29
Q

Type of internet of things that can operate as infrastructure or ad hoc.

A

802.11 (WiFi)

30
Q

Uses a small amount of battery to connects devices amongst each other creating a mesh network

A

Bluetooth

31
Q

Uses electromagnetic field to read data stored in embedded tags.

A

Radio Frequency ID

Use Cases:
- Entering a room with a card without inserting the card

32
Q

Internet of things that enables two electronic devices to communicate within a 4cm range.

A

Near-Field Communication (NFC)

Use Cases:
- Apple Pay

33
Q

Internet of things that operates with line of sight.

A

Infrared (IR)

34
Q

Internet of things that provides short-range, low-latency data transfer at rates and power consumption lower than Wi-Fi.

A

Z-Wave

Use Cases:
- Home automation like turning off the lights, lowering the volume manually.

35
Q

Internet of things that collects and transfers sensor based data.

A

Ant+

Use Cases:
- Remote control systems using the phone (TV’s, lights)

CompTIA Network+ (1 decks)

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