Ethernet Networking Review

A set of flashcards covering key concepts from the Ethernet Networking lecture notes.

What does CSMA/CD stand for?

Carrier Sense Multiple Access with Collision Detection.

Define half-duplex communication.

A mode where devices can either send or receive data, but not simultaneously.

What is a MAC address?

A 48-bit address assigned to each Ethernet network interface card (NIC), typically written in hexadecimal format.

What are the two types of fiber-optic cabling?

Single-mode and multimode.

What is the purpose of a preamble in an Ethernet frame?

To allow receiving devices to lock onto the incoming bit stream.

What does PoE stand for?

Power over Ethernet.

What is the main difference between half-duplex and full-duplex Ethernet?

Full-duplex allows sending and receiving at the same time using two pairs, while half-duplex does not.

Identify the function of the Frame Check Sequence (FCS) in an Ethernet frame.

FCS is used for error detection through a cyclic redundancy check (CRC).

What is a straight-through Ethernet cable used for?

Connecting a host to a switch or hub, or a router to a switch or hub.

What is a crossover cable used for?

Connecting similar devices such as switch to switch, hub to hub, or host to host.

Define the term 'collision domain.'

A network segment where data packets from multiple devices can collide.

What does the organizationally unique identifier (OUI) in a MAC address signify?

The first 24 bits assigned to a manufacturer by IEEE to uniquely identify their devices.

What is the purpose of the Start Frame Delimiter (SFD) in an Ethernet frame?

To synchronize the receiver by indicating the start of the data.

What is a rolled cable used for?

Connecting a PC to a Cisco router or switch for console access.

What does IEEE 802.3 standard relate to?

It defines the physical and data link layer specifications for Ethernet networking.

What is the maximum distance for 10Base-T Ethernet connections?

100 meters.

Explain the function of the Data field in an Ethernet frame.

It carries the packet sent from the Network layer and can vary in size from 46 to 1500 bytes.