Hubs, LANs, Internet Infrastructure : I.T. 10/8 Quiz 1

_____ sit at intersections and perform the routing of packets

routers

what is a packet

small unit of data sent over a network

what are packets made up of?

header, payload, trailer

The Internet consists of connected networks that are each _____ managed

independently

TCO and UDP introduce the concept of _____

ports

_____ networks send data to other _____ networks

backbone, backbone

tier one internet infrastructure

nation worldwide network

tier two internet infrastructure

regional networks

tier three internet infrastructure

local internet service provider

what does PoP stand for?

Point of Presence

What is the Point of Presence?

Point at which multiple networks or devices build a connection with each other

what are peering points?

Locations where Tier-1 and Tier 2 networks are connected for the purpose of exchanging traffic

what is private peering

two networks establish a direct link to each other

what is public peering

traffic is swapped in s specific location at an IXP

what is encoding

converting to coded form

Networks transmit _____ among devices

bits (binary digits)

what does NIC stand for?

network interface controller

what does a NIC do?

connects a computer to a computer network

a LAN is an example of a _____

transmission medium

two devices are connecting through a LAN. what do they need to agree on?

voltage and rate of transmission

binary is either on (___) or off (___)

one, zero

what is a NIC

the physical device that connects a computer to a network

what is a hub used for?

connects multiple devices together to share data and resources

for n devices connecting to the hub, each needs _____

n NICs or cables.

the hub ______ repeats anything received one one cable to all other cables

blindly

a patch cable is a type of ethernet cable that connects _____

electronic devices together, like hubs, switches and routers