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CompTIA Network+ (N10-008) > Network Basics (1.2 & 2.1) > Flashcards

Network Basics (1.2 & 2.1) Flashcards

1
Q

Purpose of Networks (connect machines / types of traffic / 5 9’s)

A
  • To make connections between machines
  • Converged networks combine multiple types of traffic like data, video, and voice.
  • We expect 99.999% availability (5 9’s) ; which means we expect only 5 minutes downtime per year.
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2
Q

Types of Network Traffic (Everyday functions that carry out)

A
  • File Sharing
  • Video chatting
  • Surfing the Web
  • Social Media
  • Streaming Video
  • E-mail
  • VoIP
  • Messaging
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3
Q

Types of Network Components (first is client)

A
  • Client
  • Server
  • Hub
  • Wireless Access Point (WAP)
  • Switch
  • Router
  • Media
  • Wide Area Network (WAN) Link
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4
Q

Client (Anything that connects to a network)

A
  • Device end-user accesses the network with
  • Found in workstation, laptop, tablet, smartphone, television, server, or any other terminal devices.
  • Can be any device that connects to a network.
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5
Q

Server (provides resources / different servers = different functions)

A
  • Provides resources to the rest of the network.
  • Different servers provide different functions, such as, E-Mail server, Web server, File server, Chat, and Print Server.
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6
Q

Hub (old tech / more ports but increased errors / receives info and rebroadcasts to all other ports)

A
  • Older technology to connect networked devices, such as clients and servers.
  • Can be interconnected to provide more ports, but this eventually leads to increased network errors.
  • Receives information in one port and rebroadcasts it out all the other ports.
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7
Q

Wireless Access Point (WAP)

A
  • Device that allows wireless devices to connect into a wired network.
  • Used in home, small businesses, and large enterprise networks.
  • Acts like a wireless hub
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8
Q

Switch (hub / learns / forwards traffic based on mac address / efficient)

A
  • Connects networked devices such as clients and servers (like a hub)
  • Switches learn what devices are on which switch ports
  • Switches only forward traffic received from a port to the destination port based on the device’s MAC address
  • Provides more security and efficiently uses available bandwidth
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9
Q

Router (networks / forwards traffic / ip for traffic)

A
  • Connect two different networks together.
  • Forwards traffic to and from a network based on its logical address.
  • Most modern routers use Internet Protocol (IP) address to determine routing of traffic.
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10
Q

Media (connection between devices / cable / strengths and limitations

A
  • Connect two devices or a device to a port
  • Made from copper cable, fiber optic cable, or radio frequency waves (WiFi)
  • Each type has strengths and limitations, such as its available bandwidth, capacity, distance that can be covered, and cost to install and maintain
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11
Q

Wide Area Network (WAN) Link

A
  • Physically connects networks together
  • Numerous WAN links are available: leased lines, DSL, Cable, Fiber Optic, Satellite, Cellular, Microwave, …
  • Connects internal network to external networks, such as a SOHO network to Internet
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12
Q

Breakdown of Client/Server Model (dedicated server (files scanners…) / administration and backup )

A

Client/Server Model:

  • Uses dedicated server to provide access to files, scanners, printers, and other resources
  • Administration and backup are easier since resources are located on a few key servers

Benefits:

  • Centralized Administration
  • Easier Management
  • Scalability

Drawbacks:

  • Higher cost
  • Requires dedicates resources
  • Requires network operating system
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13
Q

Breakdown of Peer-to-Peer Model

A

Peer-to-Peer Model:

  • Peers (PCs) share resources (files/printers) with each other directly
  • Administration and backup are more difficult since resources are located on a many PCs which adds to the administrative burden

Benefits:

  • Lower cost
  • No dedicated resources required
  • No specialized operating system required

Drawbacks:

  • Decentralized management
  • Inefficient for large networks
  • Poor scalability
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14
Q

Structure of Network Geography

Shortest to Largest

A
  • Personal Area Network (PAN)
  • Local Area Network (LAN)
  • Campus Area Network (CAN)
  • Metropolitan Area Network (MAN)
  • Wide Area Network( WAN)
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15
Q

Personal Area Network (PAN) (Small network / covers least amount / bluetooth)

A

-Smallest type of wired or wireless network.
-Covers the least amount (about a few meters).
- Examples include:
Bluetooth cellphone to car
USB hard drive to laptop

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16
Q

Local Area Network (LAN) (connection limited / short distance / via wifi or eth)

A
  • Connects components in a limited distance.
  • Each segment is limited to short distances, such as 100 meters with CAT 5 cabling
  • Consists of Ethernet (IEEE 802.3) or WiFi networks (IEEE 802.11) which is Internal wired or wireless networks.
17
Q

Campus Area Network (CAN) (building-centric / many square miles / business parks)

A

-Connects building-centric LANs across a university, industrial park, or business park.
-Covers many square miles and buildings.
Examples:
College Campus
Business Parks
Military bases

18
Q

Metropolitan Area Network (MAN) (scattered connections across city / 25 miles )

A

-Connects scattered locations across a city
-Larger than a CAN, but smaller than a WAN
-Covers up to a 25-mile radius in larger cities
Examples:
City departments like a police department.
Community college with campuses spread across a county.

19
Q

Wide Area Network (WAN) (geographically / vpn / country or world)

A

-Connects geographically disparate internal networks
-Consists of leased lines or VPNs tunneled over the Internet
-Covers distance around the country or around the world
Examples:
The Internet (largest WAN)
Connection between two private corporate networks like from New York to Seattle.

20
Q

Wireless Network Topology (Modes)

A
  • Infrastructure Mode
  • Ad Hoc Mode
  • Wireless Mesh Topology
21
Q

Infrastructure Mode (common network / centralized / WAP (star) / security cont)

A
  • 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
22
Q

Ad Hoc Mode

A

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 P2P connections

23
Q

Wireless Mesh Topology

A

Interconnection of different types of nodes or devices
▪ Consists of clients, routers, and gateways
▪ Utilizes different radio frequencies to extend and expand access
▪ Reliable and redundant connections

24
Q

Internet of Things (IoT)

A

▪ 802.11:
Operates as infrastructure or ad hoc
▪ Bluetooth:
Low energy use variant of Bluetooth which allows for a mesh network
▪ RFID
Uses electromagnetic fields to read data stored in embedded tags
▪ NFC
Enables two electronic devices to communicate within a 4 cm range
▪ Infrared (IR)
Z-Wave
Provides short-range, low-latency data transfer at rates and power consumption lower than Wi-Fi
Used primarily for home automation (Devices such as a TV Remote or cordless equipment)
▪ Ant+
Collection and transfer of sensor data
Used with remote control systems (tire pressure, TVs, lights) (Heart Rate Monitors, Speed Sensors, GPS devices)

25
Q

802.11

A

-Operates as infrastructure or ad hoc

26
Q

Bluetooth

A

-Low energy use variant of Bluetooth which allows for a mesh network

27
Q

RFID

A

-Uses electromagnetic fields to read data stored in embedded tags

28
Q

NFC (two devices / 4cm)

A

-Enables two electronic devices to communicate within a 4 cm range

29
Q

Infrared (IR) ( line of sight / tv remote)

A

-Operates with line of sight (TV remote)

30
Q

Z-Wave (like infrared MAYBE)

A
  • Provides short-range, low-latency data transfer at rates and power consumption lower than Wi-Fi
  • Used primarily for home automation
31
Q

Ant+ (collection of sensor data / heartrate, gps, speed )

A
  • Collection and transfer of sensor data

- Used with remote control systems (tire pressure, TVs, lights)

CompTIA Network+ (N10-008) (23 decks)

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