Match the following networking devices with their principal functions:
| Device | Function |
|---|
| i. Router | 1. Forwards packets between networks |
| ii. Switch | 2. Forwards Ethernet frames within a LAN using MAC addresses |
| iii. Repeater | 3. Regenerates or retransmits signals to extend a link |
| iv. Firewall | 4. Enforces traffic-security rules |
Choose the correct matching code.
A) i-4, ii-3, iii-2, iv-1
B) i-3, ii-4, iii-1, iv-2
C) i-1, ii-2, iii-3, iv-4
D) i-2, ii-1, iii-4, iv-3
Explanation:
A router forwards packets between networks, a switch commonly forwards Ethernet frames using MAC addresses, a repeater extends a link by regenerating or retransmitting signals, and a firewall applies security rules to network traffic.