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CompTIA Network+ > Network Basics > Flashcards

Network Basics Flashcards

1
Q

It can be any device that connects to the network

A

Client

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2
Q

Provides resources to the rest of the network

A

Server

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3
Q

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

A

Hub

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4
Q

▪ Device that allows wireless devices to connect to a wired network
▪ Commonly used in homes, small businesses, and even some large enterprise networks
▪ Acts as a wireless hub

A

Wireless Access Point (WAP)

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5
Q

Connects networked devices such as clients and servers (like a hub)
Can learn what devices are on which ports
Can 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

A

Switch

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6
Q

Connect two different networks together
Intelligently forward traffic to and from a network based on its logical address

A

Router

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7
Q

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

A

Media

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8
Q

Physically connects networks together
Numerous WAN links are available: leased lines, DSL, cable, fiber optic, satellite, cellular, microwave, etc.
Connects internal network to external networks, such as a SOHO network to Internet

A

Wide Area Network (WAN) Link

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9
Q

▪ 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

A

Client/Server Model

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10
Q

Benefits of Client/Server

A

Centralized administration
Easier management
Better scalability

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11
Q

Drawback of Client/Server

A

Higher cost
Requires dedicated resources
Requires network operating system

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12
Q

▪ 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

A

Peer-to-Peer Model

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13
Q

Benefits of Peer-to-Peer

A

Lower cost
No dedicated resources required
No specialized operating system required

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14
Q

Drawbacks of Peer-to-Peer

A

Decentralized management
Inefficient for large network
Poor scalability

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15
Q

Smallest type of wired or wireless network
Covers the least amount of area (few meters)

A

Personal Area Network (PAN)

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16
Q

Examples of a Personal Area Network (PAN)

A

Bluetooth cellphone to car
USB hard drive to laptop
Firewire video camera to computer

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17
Q

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)

A

Local Area Network (LAN)

18
Q

Standard for Ethernet

A

IEEE 802.3

19
Q

Standard for WiFi networks

A

IEEE 802.11

20
Q

Connects building-centric LANs across a university, industrial park, or business park
Covers many square miles and buildings

A

Campus Area Network (CAM)

21
Q

Examples of a Campus Area Network (CAM)

A

College Campus
Business Park
Military bases

22
Q

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

A

Metropolitan Area Network (MAN)

23
Q

Examples of a Metropolitan Area Network (MAN)

A

City departments like the police department
Community college with campuses spread across a county

24
Q

Connects geographically disparate internal networks
Consists of leased lines or Virtual Private Networks tunneled over the Internet
Covers distances around the country or around the world

A

Wide Area Network (WAN)

25
Q

Examples of a Wide Area Network (WAN)

A

The Internet (largest WAN)
Connecting two private corporate networks from New York to Seattle

26
Q

Shows how devices are physically connected by media

A

Physical Topology

27
Q

Shows how the actual traffic flows in the network

A

Logical Topology

28
Q

Uses a cable running through area that required network connectivity
Each device “taps” into the cable using either a T connector or vampire tap
Old technology, not commonly used anymore
Devices on cable form single collision domain

A

Bus Topology

29
Q

Uses a cable running in a circular loop
Each device connects to the ring, but data travels in a singular direction
FDDI (Fiber networks) used two counter-rotating rings for redundancy
On token ring networks, devices wait for a turn to communicate on ring by passing a token

A

Ring Topology

30
Q

Most popular physical LAN topology
Devices connect to a single point
Commonly used with Ethernet cabling, but wireless or fiber is also used
If the central device fails, the entire network fails

A

Star Topology

31
Q

Used for connecting multiple sites
Similar to Star but with WAN links instead of LAN connections
Not redundant, if central office (hub) fails, the whole network can fail

A

Hub-and-Spoke Topology

32
Q

Most redundant topology
Every node connects to every other node
Optimal routing is always available
Very expensive to maintain and operate
Number of Connections

A

Full-Mesh Topology

33
Q

Hybrid of the full-mesh and the hub-and-spoke topologies
Provides optimal routes between some sites, while avoiding the expense of connecting every site
Must consider network traffic patterns to design it effectively

A

Partial-Mesh Topology

34
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

35
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 P2P connections

A

Ad Hoc Mode

36
Q

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

A

Wireless Mesh Topology

37
Q

Uses electromagnetic fields to read data stored in embedded tags

A

RFID

38
Q

Enables two electronic devices to communicate within a 4 cm range

A

NFC

39
Q

Operates with line of sight

A

Infrared (IR)

40
Q

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

A

Z-Wave

41
Q

Collection and transfer of sensor data
Used with remote control systems (tire pressure, TVs, lights)

A

Ant+

CompTIA Network+ (3 decks)

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