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comptia a+ 1101 (core 1) (retired) > 2.2 - Compare & contrast common networking hardware > Flashcards

2.2 - Compare & contrast common networking hardware Flashcards

1
Q

What does a router do?

2.2 - Compare & contrast common networking hardware: Routers

A

Forwards data/packets between networks

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2
Q

What do switches do?

2.2 - Compare & contrast common networking hardware: Switches

A

Connect devices on a LAN & forwards data packets between them in a wired fashion

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3
Q

How does a switch send data to the right computer?

2.2 - Compare & contrast common networking hardware: Switches

A

By identifying each device’s MAC address

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4
Q

Meaning of IEEE?

2.2 - Compare & contrast common networking hardware

A

Institute of Electrical & Electronics Engineers

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5
Q

What does a managed switch allow?

2.2 - Compare & contrast common networking hardware: Switches

A

Remote management of switch settings & configurations

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6
Q

How does an unmanaged switch differ from a managed switch?

2.2 - Compare & contrast common networking hardware: Switches

A

By having no configuration options or remote management capabilities

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7
Q

What would be used to conect 2 LANs together?

2.2 - Compare & contrast common networking hardware: Switches

A

A router

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8
Q

What does an AP do?

2.2 - Compare & contrast common networking hardware: (Wireless) Access Points

A

Connects wireless devices to a wired network

It makes forwarding decisions based on the destinatinon MAC address

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9
Q

What do many APs also act as?

2.2 - Compare & contrast common networking hardware: (Wireless) Access Points

A

switches & internet routers

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10
Q

What standards do APs use?

2.2 - Compare & contrast common networking hardware: (Wireless) Access Points

A

IEEE 802.11 & 802.3

802.11 (aka Wi-Fi/WLANs) 802.3 (aka Ethernet)

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11
Q

What is a patch panel?

2.2 - Compare & contrast common networking hardware: Patch Panel

A

Device that acts as a central connection point for network cables

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12
Q

Cable used to connect to patch panels?

2.2 - Compare & contrast common networking hardware: Patch Panel

A

UTP patch cables

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13
Q

What do firewalls do?

Firewalls can be hardware or software

2.2 - Compare & contrast common networking hardware: Firewall

A

Manage network traffic

Based on pre-defined rules

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14
Q

Why do firewalls block ports?

2.2 - Compare & contrast common networking hardware: Firewall

A

To prevent unauthorized access & block potential network threats

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15
Q

What do firewalls block?

2.2 - Compare & contrast common networking hardware: Firewall

A

Ports

Blocking incoming & outgoing traffic

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16
Q

What do most software firewalls protect?

2.2 - Compare & contrast common networking hardware: Firewall

A

Individual computers

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17
Q

What do hardware firewalls protect?

2.2 - Compare & contrast common networking hardware: Firewall

A

Entire networks or enterprise systems

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18
Q

Firewalls

Meaning of ACL?

2.2 - Compare & contrast common networking hardware: Firewall

A

Access Control List

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19
Q

What is ACL?

2.2 - Compare & contrast common networking hardware: Firewall

A

Firewall feature that determines which network traffic is allowed based on specific criteria

criteria like a source & IP address, port #, & protocol

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20
Q

Meaning of PoE?

2.2 - Compare & contrast common networking hardware: PoE

A

Power over Ethernet

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21
Q

What is PoE?

2.2 - Compare & contrast common networking hardware: PoE

A

Ethernet standard that allows to transmit power over ethernet cables

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22
Q

What is PoE a good solution for?

2.2 - Compare & contrast common networking hardware: PoE

A

Devices placed in areas where electrical connections can’t be made

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23
Q

The 2 devices that make up PoE technology?

2.2 - Compare & contrast common networking hardware: PoE

A

PSE & PD

(Power Sourcing Equipment) (Powered Device)

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24
Q

What is the PSE?

2.2 - Compare & contrast common networking hardware: PoE

A

Device that supplies power over Ethernet cables to other devices

i.e. WAPs, routers, switches, etc.

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25
Q

What is the PD?

2.2 - Compare & contrast common networking hardware: PoE

A

Device that receives power over the Ethernet cable

i.e. IP phone, lighting controller, switch, WAPs, etc.

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26
Q

Smaller & cheaper solution to a PoE-enabled switch?

2.2 - Compare & contrast common networking hardware: PoE

A

PoE injector

27
Q

3 PoE standards?

2.2 - Compare & contrast common networking hardware: PoE

A
  • 802.3af
  • 802.3at
  • 802.3bt

Each has different power levels & capabilities

28
Q

802.3af is aka…?

2.2 - Compare & contrast common networking hardware: PoE

A

Type 1 PoE

29
Q

802.3at is aka…?

2.2 - Compare & contrast common networking hardware: PoE

A

Type 2 PoE+

30
Q

803.bt is aka…?

2.2 - Compare & contrast common networking hardware: PoE

A

Type 3 PoE++ & Type 4 PoE++ variation

Not officially recognized by IEEE but used by vendors to avoid confusion

31
Q

What was used before switches?

2.2 - Compare & contrast common networking hardware

A

Hubs

32
Q

How does a hub work?

2.2 - Compare & contrast common networking hardware: Hubs

A

Broadcasts data received from 1 port to all the other connected ports

33
Q

What happens when a hub broadcasts data to connected devices?

2.2 - Compare & contrast common networking hardware: Hubs

A

Computer meant for that data accepts it & the rest of the computers drop it

34
Q

How do hubs differ from switches?

2.2 - Compare & contrast common networking hardware: Hubs

A

By not using MAC addresses to forward data packets & not providing advanced features

35
Q

What does a modem do?

2.2 - Compare & contrast common networking hardware

A

Connects devices & networks to the internet over a communication network

i.e. telephone & cable network, satellite, wifi, cellular networks, etc.

36
Q

How does a cable modem connect devices to the internet?

2.2 - Compare & contrast common networking hardware: Cable Modem

A

Demodulating signals from cable provider & sending it to devices via Ethernet or WiFi

37
Q

What is modulation?

2.2 - Compare & contrast common networking hardware

A

Process of encoding data into a signal for transmission

38
Q

What is demodulation?

2.2 - Compare & contrast common networking hardware: Modem

A

Process of decoding modulated signals back to its original form

39
Q

How does a DSL Modem connect devices to the internet?

2.2 - Compare & contrast common networking hardware: DSL Modem

A

Demodulating signals from telephone lines & sending it to devices via Ethernet or WiFi

40
Q

Meaning of DSL?

2.2 - Compare & contrast common networking hardware: DSL Modem

A

Digital Subscriber Line

41
Q

What type of modem is usually faster?

2.2 - Compare & contrast common networking hardware

A

Cable modems

42
Q

What is a gateway?

2.2 - Compare & contrast common networking hardware

A

A modem/Wi-Fi router combo

43
Q

Meaning of ONT?

2.2 - Compare & contrast common networking hardware: ONT

A

Optical Network Terminal

44
Q

What is an ONT?

2.2 - Compare & contrast common networking hardware: ONT

A

Device that connects an ISP’s fiber network to a modem/router

45
Q

When is an ONT used?

2.2 - Compare & contrast common networking hardware: ONT

A

When using fiber-optic internet

(Connecting to internet via fiber-optic cables)

46
Q

What is the term ‘demarc’?

(demarcation point)

2.2 - Compare & contrast common networking hardware: ONT

A

The point where the ISP’s network ends & the customer’s internal network begins.

47
Q

Meaning of NID?

2.2 - Compare & contrast common networking hardware: ONT

A

Network Interface Device

48
Q

What is a NID?

2.2 - Compare & contrast common networking hardware: ONT

A

Device that separates the service provider’s network from the customer’s internal wiring.

49
Q

An ONT is a type of…?

2.2 - Compare & contrast common networking hardware: ONT

A

NID

ONT
50
Q

Meaning of NIC?

2.2 - Compare & contrast common networking hardware: NIC

A

Network Interface Card

51
Q

What is a NIC?

2.2 - Compare & contrast common networking hardware: NIC

A

Hardware that connects a device to a network

52
Q

How can a NIC be installed on a device?

2.2 - Compare & contrast common networking hardware: NIC

A

Built-in or added as an expansion card

53
Q

What are network resources?

A

Resources that are shared among devices on a network

i.e. internet, shared files, printers, etc.

54
Q

What does a NIC allows a device to access?

2.2 - Compare & contrast common networking hardware: NIC

A

Network resources

i.e. Internet, shared files, printers, etc.

55
Q

What would be an easy NIC upgrade?

2.2 - Compare & contrast common networking hardware: NIC

A

Using a USB NIC

56
Q

What do all NICs have?

2.2 - Compare & contrast common networking hardware: NIC

A

A MAC address

57
Q

What is a NIC aka?

2.2 - Compare & contrast common networking hardware: NIC

A

Network adapter

58
Q

Meaning of SDN?

2.2 - Compare & contrast common networking hardware: SDN

A

Software-Defined Networking

59
Q

What is SDN?

2.2 - Compare & contrast common networking hardware: SDN

A

A networking approach that separates the control & data plane in network devices

60
Q

What is a centralized controller in SDN?

2.2 - Compare & contrast common networking hardware

A

Software acting as the brain of an SDN

61
Q

Why does SDN separate the control plane from the data plane?

2.2 - Compare & contrast common networking hardware: SDN

A

For more centralized & flexible management, improving network performance & efficiency

62
Q

How does the centralized controller control behavior in SDN?

aka hardware/software edge devices

2.2 - Compare & contrast common networking hardware: SDN

A

By communicating with network devices via protocol

Like OpenFlow

63
Q

How do network admins control behavior in SDN?

What does the centralized controller do?

2.2 - Compare & contrast common networking hardware: SDN

A

via centralized controller

64
Q

What does SDN enable to create?

2.2 - Compare & contrast common networking hardware: SDN

A

VLANs

comptia a+ 1101 (core 1) (retired) (23 decks)

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