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.
2
Q
Types of Connectivity
A
- Wired
- Wireless
3
Q
Wired
A
→ Uses physical cables to connect devices
4
Q
Universal Serial Bus (USB)
A
- Connects peripherals & external storage
- High transfer speed
- Max length 3m
- Can connect multiple devices to one port
5
Q
High-Definition Multimedia Interface (HDMI)
A
- Connects displays (monitors)
- Carries audio + high-resolution video (4K/60Hz)
- 18Gbps bandwidth
- No locking mechanism
6
Q
Ethernet
A
- Connects IT systems to local networks/routers
- 100m range, 1000Mbps speed
- Limited mobility
- Not common on newer devices
7
Q
Serial Advanced Technology Attachment (SATA)
A
- Connects internal storage devices
- Very fast (6Gbps)
- Shorter range than USB
- Cannot supply power
8
Q
Video Graphics Array (VGA)
A
- For monitors/projectors
- Locking mechanism
- Supports up to 1080p
- Outdated, no audio
9
Q
Fiber Optic
A
- Transfers data using light pulses
- Very fast (up to 100Gbps)
- Long range (100km)
- Expensive
10
Q
Wireless
A
→ Connection without any physical wired
11
Q
Infrared
A
- Used in TV remotes & some peripherals
- Low interference
- Requires line of sight
- Max range 5m
- Slow (4Mbps)
12
Q
Bluetooth
A
- Connects peripherals; used in PANs
- Automated pairing, low power use
- Low interference
- Slow (25Mbps) & poor security
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)
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
