Lesson 2

Question 1

Broadcast Domain

Answer 1

A group of devices on a network that can receive broadcast traffic from each other. Routers create separate broadcast domains.

Question 2

Collision Domain

Answer 2

A group of devices on the same segment that are subject to collisions. Switches create separate collision domains.

Question 3

Crossover Cable

Answer 3

A twisted-pair cable with specific wires swapped or crossed over on one of the two cable connections. Crossover cables connect similar networking devices such as a switch to a switch, a switch to a router, or a cable modem to a router.

Question 4

Default gateway

Answer 4

The IP address on the near side of the router in a subnet. The default gateway usually provides a path to the Internet.

Question 5

Extranet

Answer 5

An area between the Internet and an intranet hosting resources for trusted entities. Trusted entities are able to access these resources through the Internet.

Question 6

Frame

Answer 6

The name of data traveling on the Data Link layer of the OSI Model. Packets travel on the Network layer, and segments travel on the Transport layer.

Question 7

Hub

Answer 7

A hub is a layer 1 device that connects multiple devices in an Ethernet environment. Data sent in one port goes out all other ports, creating a single collision domain for all connected devices.

Question 8

Internet Engineering Task Force (IETF)

Answer 8

An organization that defines Internet communication standards known as RFCs.

Question 9

Intranet

Answer 9

An internal network using the same TCP/IP protocols used on the Internet.

Question 10

Multicast

Answer 10

Network traffic from one network device to multiple other network devices on a network.

Question 11

Packet

Answer 11

The name of data traveling on the Network layer of the OSI Model. Frames travel on the Data Link layer, and segments travel on the Transport layer.

Question 12

Protocol data unit (PDU)

Answer 12

The name of data traveling at layers 5, 6, and 7 of the OSI Model. Data is called a segment on the Transport layer (layer 4), packets are on the Network layer (layer 3), and frames are on the Data Link layer (layer 2)

Question 13

Straight-through cable

Answer 13

A twisted-pair Ethernet cable with all the wires going to the same pins on both connections of the cable. Straight-through cables connect computers to networking devices such as switches.

Question 14

Unicast

Answer 14

Network traffic from one device on a network to one other device on a network.