2.2 network devices/ software defined networking

Question 1

Routes traffic between IP subnets. Makes forwarding decisions based on IP address. Often connects diverse network types (LAN, WAN, Copper, Fiber).

Answer 1

Routers

Question 2

Bridging done in hardware. Forwards traffic based on data link address. Has many ports and features. May provide Power over Ethernet (PoE).

Answer 2

Switches

Question 3

Switches that can be operated remotely. Interconnect with other switches via 802.1Q.

Answer 3

Managed switch

Question 4

Cannot be operated remotely. Very little integration with other devices. Fixed configuration. Low price point.

Answer 4

Unmanaged switch.

Question 5

Not a wireless router. Extends the wired network onto the wireless network. Usually involves a separate network device with a built-in antenna, transmitter, and adapter.

Answer 5

Access point

Question 6

Combination of punch-down blocks and
RJ-45 connectors. Cables that run through the walls from the hosts are connected to this device.

Answer 6

Patch Panel

Question 7

Filters traffic by port number. Can encrypt traffic into/out of the network. Protect your traffic between sites. A common security technique.

Answer 7

Firewall

Question 8

Power provided on an Ethernet cable. One wire for both network and electricity. Phones, cameras, wireless access points. Useful in difficult-to-power areas. Power provided at the switch.

Answer 8

Power over Ethernet (PoE)

Question 9

Can provide PoE to a device when a switch does not support PoE.

Answer 9

PoE Injectors

Question 10

Port for PoE. Provide power to devices connected.

Answer 10

PoE switch

Question 11

PoE Standards

Answer 11

Minimum power per port provided to the device. Maximum power per port provided by the power sourcing device. Required cable category. Power over pairs. Released date. (See table in book).

Question 12

Used in networks that use twisted pair cabling to connect devices and can join segments into larger networks. Difficult to find today. Becomes less efficient as network traffic increases. “Multi-port repeater” (Traffic going in one port is repeated to every other port).

Answer 12

Hub

Question 13

Broadband Transmission across multiple frequencies. High-speed networking Speeds up to 1 Gigabit/s are available. Multiple services, (Data, voice, video).

Answer 13

Cable modem

Question 14

Use existing phone lines with a DSL modem and a network card.

Answer 14

Digital Subscriber Line (DSL)

Question 15

Provides internet access from a fiber network. Connects the ISP fiber network to the copper network.

Answer 15

Optical network terminal (ONT)

Question 16

Expansion cards that are installed into slots in a desktop computer. Connects the computer to a network. Most large and small devices have this integrated and built in. The fundamental network device. Many options - Single port, multi-port, copper, fiber.

Answer 16

Network Interface card (NIC)

Question 17

Networking devices have different functional planes of operation– Data, control, and management planes. Split the functions into separate logical units extend the functionality and management
of a single device Perfectly built for the cloud.

Answer 17

SDN (Software Defined Networking)