ITPEC IP April 2026 Question 30
Which of the following is an appropriate explanation of the routing function of a router, which is a device constituting a network?
Explanation
It connects different networks and chooses the optimal path to relay packets — that is routing.
A router sits between networks, such as a company LAN and the Internet. For each packet it reads the destination IP address, looks it up in its routing table and forwards the packet to the next router on the best path. Routing tables are set by hand or learned from other routers through routing protocols. This is network layer (layer 3) work.
Answer (b)
Why not others:
- •(a) — describes MDM (mobile device management), which monitors and configures a company's smartphones and tablets from one place
- •(c) — describes a media converter, which converts signals between optical fibre and copper cable at the physical layer
- •(d) — describes a DNS server, which answers queries by converting host names into IP addresses
Key rule: A router forwards between networks by IP address; a switch forwards within one LAN by MAC address.
Networks · AI-written, may contain errors
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