Unit 2: Internet
Consider the following Internet functions. -Checks if a connected node has knowledge of the destination IP. -If the connected node has knowledge of the destination IP, sends the packet to node. -If the connected node has no knowledge of the destination IP, find other path. Which of the following is the Internet device that handles the above-mentioned actions?
Router
Which of the following provides the fastest Internet connection?
Fiber optic cable (light)
TCP
Reliable and error-checked protocol for non-streaming
The Internet was designed to handle communication in such a way that if singular locations or entire regions are destroyed by natural disasters or war, the Internet can continue to communicate. Which of the following are correct statements about Internet connectivity? 1. The Internet is a large network of interconnected smaller networks. There is not one singular network that controls the communications for all the other networks. 2. Every device on the Internet has a unique IP (Internet Protocol) address. 3. Routers find paths between Internet devices and reroute traffic if any device or an entire large network on the Internet is no longer functional.
1,2, and 3
You must decide between using a wireless connection or Ethernet cable to your home router. Which of the following is a reason to NOT select WIFI?
2. Ethernet cable is more reliable than WIFI. 3. WIFI can have security issues.
If websites exist on the Internet at a specific IP addresses, like 229.150.17.45, how does some network request to a Domain Name, like www.AAAPlumbing.com, manage to find the correct website on the Internet? Who or what handles the conversion from a name to a number?
A DNS (Domain Name System) server handles the conversions.
Server
A computer that provides functionality for others
Client
A computer that uses the resources of another
Modem
A device that converts data for transmission
When two students sit close to each other they are surprised by the appearance of a website. Both students access the exact same webpage of the same web address, at the same time, and there are noticeable differences in appearance. Which of the following might account for these differences?
All of the above
Bit rate
Amount of actual data transmitted in unit of time
Latency
Amount of delay/time it takes to transmit data
Router
Device that moves data packets between computers
ARPANET
First network to implement the TCP/IP protocols
Bandwidth
Maximum possible data transmitted in unit of time
IPv6
More than enough possible addresses for the future
IPv4
Not enough now and looks 255.255.255.255
MAC Address
Permanent unique identifier assigned to hardware
DNS
Phone book between addresses and domain names
Fault Tolerant
Property of continuing to work even with errors
IP
Protocol used to move packets to internet addresses
ISP
Provides service for accessing/using the Internet
UDP
Real-time-like protocol used for streaming with errors
Name Server
Server with domain names and their addresses
Packets
Small piece of data with extra helpful information
IP Address
Temporary unique identifier assigned to hardware
Which of the following is a good analogy for the meaning of Internet bandwidth?
The number of lanes on a highway.
Large files are transmitted on the Internet from source computer to destination computer. The files are not sent whole, but in smaller pieces, called packets, by the router. What is true about the paths of the packets?
The router selects a path and switches to a different path if the link is broken. The router may also switch to another path if the delay is too long.
A person at a home computer tries to browse several new locations on the Web. Initially, websites appear, like Google search and other commonly used websites, but there are difficulties reaching many other web sites. What may explain this problem?
This person may have a bad router that incorrectly tries to find connection and does not have an accurate table of its connections on the Internet.
A router transmits
packets on the Internet