Q1

Which OSI layer is primarily responsible for routing packets between networks?

1. Application
2. Transport
3. Network
4. Data Link

C) Network (Layer 3). That’s where IP lives, handling logical addressing and routing between networks (routers’ home turf).

Q2

In the TCP/IP model, which layer corresponds most closely to the OSI Network layer (L3)?

1. Link
2. Internet
3. Transport
4. Application

B) Internet. In TCP/IP, the Internet layer handles logical addressing and routing (think IP, ICMP), which maps to OSI Layer 3.

Q3

A standard Ethernet switch primarily operates at which OSI layer?

1. Physical
2. Data Link
3. Network
4. Transport