Foundations of Networking: LAN Technologies and Topologies

A device where a message originates or ends is classified as:

Which network type spans a city, often connecting several LANs for one organization?

In which LAN topology do all devices share a single backbone cable, so one cable break drops the entire network?

How many links does a full mesh of n devices require?

Which media access method is used by 802.11 wireless LANs?

The minimum Ethernet frame size is 64 B. Why?

In a 48-bit MAC address, how many bits form the Organizationally Unique Identifier (OUI)?

An Ethernet frame carries EtherType 0x0806. Which upper-layer protocol is it carrying?

Which OSI layer provides logical addressing and routing?

A router's table holds 10.0.2.0/24 and 0.0.0.0/0. A packet for 10.0.2.20 arrives. Which entry is used, and why?

Physical topology describes how data moves between devices, while logical topology is the tangible layout of cables.

In a star topology the central switch or hub is a single point of failure.

Token passing is a contention-based access method in which collisions are possible.

The Frame Check Sequence (FCS) is a 32-bit CRC that the receiver recalculates to detect transmission errors.

A device's MAC address changes when it moves to a different network.

A WAN is typically leased from a service provider.

Ethernet is defined by the IEEE 802.3 standard and specifies both the media access method and the frame format.

The Network layer delivers packets reliably; guaranteeing delivery is its responsibility.

In a peer-to-peer network every device can act as both client and server.

Real campus LANs combine simple star topologies into a hierarchy called the extended-star topology.

Match each network type with its geographic scope.

Match each LAN topology with its defining characteristic.

Match each Ethernet frame field with its purpose.

Match each OSI layer with its role.

Match each media access method with its description.