Comptia A+ Core 1 > Networking Basic > Flashcards

Networking Basic Flashcards

(84 cards)

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1
Q

Purposes of NIC

A

Provides Ethernet connections to networks

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2
Q

Copper NIC

A

Uses CAT5 or above cables

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3
Q

Fiber NIC

A

Uses fiber optic cables

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4
Q

Wireless NIC connection method

A

Connects using radio frequencies in Wi-Fi ranges (2.5 GHz)

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5
Q

What speeds to hubs operate at?

A

10 or 100 Mbps

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6
Q

What are collisions in terms of networking?

A

When multiple devices send data simultaneously

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7
Q

What do switches do differently than hubs?

A

Prevent collisions and increase security

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8
Q

What is an unmanaged switch?

A

Plug-and-play device

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9
Q

What is a managed switch?

A

Configurable for advanced features

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10
Q

How many ports do switches support?

A

Up to 96

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11
Q

How many ports do hubs have?

A

4 to 48

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12
Q

How do switches forward messages to their intended devices?

A

Using the MAC address

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13
Q

What do WAPs do functionally?

A

Convert radio frequencies into electrical via CAT5/CAT6 cables

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14
Q

What is the action the WAPs do in terms of network connectivity?

A

Facilitates wireless connections to access network services or the internet

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15
Q

What does a router do?

A

Connects different networks and makes forwarding decisions using IP addresses

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16
Q

What do routers connect?

A

Commonly connects LANs to the internet via ISPs

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17
Q

What are firewalls?

A

Security devices that filter incoming/outgoing traffic based on Access Control Lists

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18
Q

Standalone firewall devices

A

Used for enterprise networks

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19
Q

Firewalls integrated into SOHO devices

A

Often combined with routers and modems

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20
Q

Unified Threat Management

A

Combines firewalls with other features like spam filtering and antivirus

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21
Q

What are patch panels?

A

Centralized cable termination point using punchdown blocks and RJ45 ports

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22
Q

POE 802.3af

A

13 Watts

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23
Q

POE+ 802.3at

A

25 Watts

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24
Q

POE++ 802.3bt

A

51 Watts Type 3; 73 Watts Type 4

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25
Cable Modems
Converts coaxial cable RF signals into Ethernet-compatible electrical signals
26
DSL Modems
Converts signals from phone lines into Ethernet-compatible signals
27
Optical Network Terminals
Terminates fiber optic connections
28
How do Optical Network Terminals operate?
Converting light signals to electrical signals for Ethernet transmission
29
Where are cable modems most common?
Residential areas
30
What are DSL modems commonly used for?
High-speed internet over telephone lines
31
What does software defined networking do?
Virtualized network hardware for centralized control via software
32
What does software defined networking allow?
Enables programmatic control of network devices and functions
33
What do all devices on a hub share?
The same collision domain
34
What does a Virtual Local Area Network allow?
Allows logical segmentation of networks on managed switches
35
What do Access Control Lists do?
Define traffic rules for firewalls to allow, block, or drop packets
36
What do Power Injectors do?
Adds PoE capabilities to non-PoE switches for powered devices
37
What does Unified Threat Management do?
Integrates firewalls with antivirus, spam filtering and other security features
38
What is a Personal Area Network?
The smallest network type, covering short distances to connect personal devices
39
What is the focus of Personal Area Networks?
Wires or wireless connectivity within about 10 feet
40
What is a Local Area Network?
A network connecting devices within a limited geographic area, typically within a building
41
What is the typical distance for LANs?
Up to 100 meters
42
What are the standards of a LAN?
Ethernet or Wi-Fi
43
What is a Metroplitan Area Network?
A network connecting multiple LANs within a city
44
How much area does a Metroplitan Area Network cover?
Up to 25 miles or more
45
What is a Wide Area Network?
A network connecting geographically dispersed networks over a large area
46
What is the coverage area of a Wide Area Network?
Across states, countries or globally
47
What is an example of a WAN?
The Internet
48
What is a Wireless Local Area Network?
A wireless network connecting devices withing a limited area using Wi-FI
49
What is the focus of a WLAN?
Mobility within a coverage area without losing network connection
50
What is a Storage Area Network?
A network that provides access to configurable storage pools, often isolated from the main network
51
What is the focus of Storage Area Networks?
High-speed storage access using technologies like iSCSI or fiber channels
52
What is an example of a Storage Area Network?
Data centers using SANs for efficient data storage and retrieval
53
What does Internet of Things mean?
Refers to a global network of appliances and personal devices equipped with sensors, software and network connectivity
54
What does IoT allow?
Allows devices to report state and configuration data and be managed remotely over IP networks
55
What do IP video systems do?
Provide remote collaboration via IP-based video streams
56
Where are IP video systems most common?
Security operations centers with multiple displays and centralized video switching systems
57
What are examples of Physical Access Control Systems
Proximity readers, biometric readers, access control systems and security cameras
58
How do Physical Access Control Systems operate?
They communicate with authentication servers over IP networks
59
IoT Hub and Control System
Central communication point for managing IoT devices i,e, Amazon Echo
60
Sensors
Measure various conditions and relay data to hubs
61
Which protocols are used by IoT devices?
Z-Wave, Zigbee, Wi-Fi, Bluetooth
62
Unshielded Twisted Pair
Four twisted pairs encased in a plastic sheath
63
Shielded Twisted Pair
Includes metal foil for additional EMI protection but is less flexible
64
What is the maximum distance of UTP and STP
100 meters
65
Cat5 Cable Ethernet Standard
100BASE-TX (FastEthernet)
66
Cat5 Bandwidth
100 Mbps
67
Cat5 maximum distance
100 meters
68
Cat5e Cable Ethernet Standard
1000BASE-T (Gigabit Ethernet)
69
Cat5e bandwidth
1 Gbps
70
Cat6 bandwidth
1 Gbps to 100 meters, 10 Gbps to 55 meters
71
Cat6a Ethernet Standard
10GBASE-T
72
CAT6a Bandwidth
10 Gbps
73
Cat7 Ethernet Standard
10GBASE-T
74
Cat7 Bandwidth
10 Gbps
75
Cat8 Ethernet Standard
40GBASE-T
76
Cat8 Bandwidth
40Gbps
77
RJ-45 uses
Twisted pair cables in LANs
78
RJ-11 uses
Landline phones and some DSL modems
79
Bandwidth
Theoretical maximum data capacity of a cable
80
Throughput
Actual data transmitted in real-world conditions
81
Which factors affect throughput?
EMI, cable length and network hardware
82
Plenum-Rated Cables
Designed for places with air circulation, fire resistant and required for public buildings
83
Non-Plenum Rated Cables (Riser Cables)
Used in vertical spaces between floors, insulated with PVC, mostly used in residential environments
84
Direct Bury Cables
Designed for underground use, heavy-duty and waterproof, used in indoors when buildings are connected
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