1 - Connectivity Flashcards

(14 cards)

1
Q

Importance of Connectivity

A
  • IT systems must transmit data internally (CPU ↔ RAM) and externally (to peripherals).
  • Connecting devices allows communication and supports larger IT systems.
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2
Q

Types of Connectivity

A
  • Wired
  • Wireless
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3
Q

Wired

A

→ Uses physical cables to connect devices

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4
Q

Universal Serial Bus (USB)

A
  • Connects peripherals & external storage
  • High transfer speed
  • Max length 3m
  • Can connect multiple devices to one port
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5
Q

High-Definition Multimedia Interface (HDMI)

A
  • Connects displays (monitors)
  • Carries audio + high-resolution video (4K/60Hz)
  • 18Gbps bandwidth
  • No locking mechanism
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6
Q

Ethernet

A
  • Connects IT systems to local networks/routers
  • 100m range, 1000Mbps speed
  • Limited mobility
  • Not common on newer devices
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7
Q

Serial Advanced Technology Attachment (SATA)

A
  • Connects internal storage devices
  • Very fast (6Gbps)
  • Shorter range than USB
  • Cannot supply power
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8
Q

Video Graphics Array (VGA)

A
  • For monitors/projectors
  • Locking mechanism
  • Supports up to 1080p
  • Outdated, no audio
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9
Q

Fiber Optic

A
  • Transfers data using light pulses
  • Very fast (up to 100Gbps)
  • Long range (100km)
  • Expensive
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10
Q

Wireless

A

→ Connection without any physical wired

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11
Q

Infrared

A
  • Used in TV remotes & some peripherals
  • Low interference
  • Requires line of sight
  • Max range 5m
  • Slow (4Mbps)
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12
Q

Bluetooth

A
  • Connects peripherals; used in PANs
  • Automated pairing, low power use
  • Low interference
  • Slow (25Mbps) & poor security
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13
Q

WiFi

A
  • Connects to internet and peripherals
  • Speeds up to 2.5Gbps, range ~70m
  • Cheap to set up, harder to install
  • Security vulnerabilities (hackers)
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14
Q

Mobile Broadband (3G/4G/5G)

A
  • Internet via cellular network
  • Works almost anywhere
  • No setup needed
  • Can be expensive
  • Slower data transfer than WiFi or wired
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