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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

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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
What is the PD? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
Device that receives power over the Ethernet cable | i.e. IP phone, lighting controller, switch, WAPs, etc.
26
Smaller & cheaper solution to a PoE-enabled switch? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
PoE injector
27
3 PoE standards? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
- 802.3**af** - 802.3**at** - 802.3**bt** | Each has different power levels & capabilities
28
802.3af is aka...? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
Type 1 PoE
29
802.3at is aka...? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
Type 2 PoE+
30
803.bt is aka...? ## Footnote 2.2 - Compare & contrast common networking hardware: **PoE**
Type 3 PoE++ & Type 4 PoE++ variation | Not officially recognized by IEEE but used by vendors to avoid confusion
31
What was used before switches? ## Footnote 2.2 - Compare & contrast common networking hardware
Hubs
32
How does a hub work? ## Footnote 2.2 - Compare & contrast common networking hardware: **Hubs**
Broadcasts data received from 1 port to all the other connected ports
33
What happens when a hub broadcasts data to connected devices? ## Footnote 2.2 - Compare & contrast common networking hardware: **Hubs**
Computer meant for that data accepts it & the rest of the computers drop it
34
How do hubs differ from switches? ## Footnote 2.2 - Compare & contrast common networking hardware: **Hubs**
By not using MAC addresses to forward data packets & not providing advanced features
35
What does a modem do? ## Footnote 2.2 - Compare & contrast common networking hardware
Connects devices & networks to the internet over a communication network | i.e. telephone & cable network, satellite, wifi, cellular networks, etc.
36
How does a cable modem connect devices to the internet? ## Footnote 2.2 - Compare & contrast common networking hardware: **Cable Modem**
Demodulating signals from cable provider & sending it to devices via Ethernet or WiFi
37
What is modulation? ## Footnote 2.2 - Compare & contrast common networking hardware
Process of encoding data into a signal for transmission
38
What is demodulation? ## Footnote 2.2 - Compare & contrast common networking hardware: **Modem**
Process of decoding modulated signals back to its original form
39
How does a DSL Modem connect devices to the internet? ## Footnote 2.2 - Compare & contrast common networking hardware: **DSL Modem**
Demodulating signals from telephone lines & sending it to devices via Ethernet or WiFi
40
Meaning of DSL? ## Footnote 2.2 - Compare & contrast common networking hardware: **DSL Modem**
Digital Subscriber Line
41
What type of modem is usually faster? ## Footnote 2.2 - Compare & contrast common networking hardware
Cable modems
42
What is a gateway? ## Footnote 2.2 - Compare & contrast common networking hardware
A modem/Wi-Fi router combo
43
Meaning of ONT? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
Optical Network Terminal
44
What is an ONT? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
Device that connects an ISP's fiber network to a modem/router
45
When is an ONT used? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
When using fiber-optic internet | (Connecting to internet via fiber-optic cables)
46
What is the term '*demarc*'? | (demarcation point) ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
The point where the ISP's network ends & the customer's internal network begins.
47
Meaning of NID? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
Network Interface Device
48
What is a NID? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
Device that separates the service provider's network from the customer's internal wiring.
49
An ONT is a type of...? ## Footnote 2.2 - Compare & contrast common networking hardware: **ONT**
NID
50
Meaning of NIC? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Network Interface Card
51
What is a NIC? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Hardware that connects a device to a network
52
How can a NIC be installed on a device? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Built-in or added as an expansion card
53
What are network resources?
Resources that are shared among devices on a network | i.e. internet, shared files, printers, etc.
54
What does a NIC allows a device to access? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Network resources | i.e. Internet, shared files, printers, etc.
55
What would be an easy NIC upgrade? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Using a USB NIC
56
What do all NICs have? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
A MAC address
57
What is a NIC aka? ## Footnote 2.2 - Compare & contrast common networking hardware: **NIC**
Network adapter
58
Meaning of SDN? ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
Software-Defined Networking
59
What is SDN? ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
A networking approach that separates the control & data plane in network devices
60
What is a centralized controller in SDN? ## Footnote 2.2 - Compare & contrast common networking hardware
Software acting as the brain of an SDN
61
Why does SDN separate the control plane from the data plane? ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
For more centralized & flexible management, improving network performance & efficiency
62
How does the centralized controller control behavior in SDN? | aka hardware/software edge devices ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
By communicating with network devices via protocol | Like OpenFlow
63
How do network admins control behavior in SDN? | What does the centralized controller do? ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
via centralized controller
64
What does SDN enable to create? ## Footnote 2.2 - Compare & contrast common networking hardware: **SDN**
VLANs

CompTIA A+ 1101 (Core 1) (Retired) (23 decks)

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