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WorksheetsNetworks and the Internet
Total questions: 25
Worksheet time: 13mins
A city government is attempting to reduce the digital divide between groups with differing access to computing and the Internet.
Which of the following actions is LEAST likely to be effective in this purpose?
Holding basic computer classes at community centers
Providing free wireless Internet connections at locations in low-income neighborhoods
Putting helpful tips for operating computers on the city government website
Requiring that every school and library have assistive devices that allow people with disabilities to access computer resources
Which of the following best explains what happens when a new device is connected to the Internet?
A device driver is assigned to the device.
An Internet Protocol (IP) address is assigned to the device
A packet number is assigned to the device.
A Web site is assigned to the device
How is the bandwidth of a network measured?
Bitrate. Higher bitrate means higher bandwidth
Voltage. Higher voltage means higher bandwidth
Frequency of waves. Higher frequency means higher bandwidth
Light. More light means higher bandwidth.
What is the bitrate of a system?
The number of bits used to encode a single letter
The amount of data (in bits) that can be sent in a fixed amount of time
The strength of the network connection
The distance that data needs to travel in a network
Which of the following is a benefit of the fault-tolerant nature of Internet routing?
The ability to use a hierarchical naming system to avoid naming conflicts
The ability to provide data transmission even when some connections between routers have failed
The ability to resolve errors in domain name system (DNS) lookups
The ability to use multiple protocols such as hypertext transfer protocol (HTTP), Internet protocol (IP), and simple mail transfer protocol (SMTP) to transfer data.
What is the Internet Protocol (IP)?
A set of rules describing what behavior is acceptable on the Internet
A law that says that the Internet is for everyone
A protocol that defines the structure of an Internet address and assigns a unique address to every device on the Internet
An agreement that sets a limit on the number of computers than can be on the Internet at any given time
What information is contained in a packet?
The entirety of a digital message
The entirety of a digital message, and metadata about the message, including where it came from and where it is going
A small part of a digital message.
A small part of a digital message, and metadata about the message, including where it came from and where it is going
What is the purpose of the Digital Millennium Copyright Act?
To make all content on the Internet free for everyone to use.
To criminalize the act of circumventing, or getting around, access controls that block access to copyrighted works.
To make the internet open and accessible to all
To help get rid of copyright laws
What is the function of the Domain Name System (DNS)?
To sell website names to web developers
To assign a unique domain name to every computer
To make sure that each IP address has only one corresponding domain name
To translate domain names into IP addresses
Is the following statement true, or false:
Everyone in the world has internet access.
True
False
Two computers are built by different manufacturers. Which of the following best describes whether these two computers can communicate with each other across the Internet?
The computers cannot communicate, because different manufacturers use different communication protocols.
The computers can communicate, but additional hardware is needed to convert data packets from one computer’s protocol to the other computer’s protocol.
The computers can communicate directly only if the messages consist of text. Other formats cannot be interpreted across computers.
The computers can communicate directly because Internet communication uses standard protocols that are used by all computers on the Internet.
Which of the following are true about Internet routing?
I - For any two points on the Internet, there exists only one path between the two points
II - Routing on the Internet is fault tolerant and redundant
I only
II only
Both I and II
Neither I nor II
Which of the following statements are true about the Internet?
I - The Internet connects devices and networks all over the world
II - The Internet helps people collaborate to solve problems
III - The Internet helps people communicate
IV - There are no negative consequences of the Internet, it is purely positive
I only
I and II only
I, II, and III
II, III, and IV
A user enters a Web address in a browser, and a request for a file is sent to a Web server. Which of the following best describes how the file is sent back to the user?
The file is broken into packets and sent over a network. The packets must be reassembled by the user’s computer when they are received. If any packets are missing, the browser re-requests the missing packets.
The file is broken into packets and sent over a network. The user’s browser must request each packet, in order, until all packets are received.
The server attempts to connect directly to the user’s computer. If the connection is successful, the entire file is sent at once. If the connection is unsuccessful, an error message is sent to the user.
The server repeatedly attempts to connect directly to the user’s computer until a connection is made. Once the connection is made, the entire file is sent.
Which of the following sends bits over the internet using radio waves?
Ethernet cable
Wifi Router
Fiber Optic Cable
phone line
What is a benefit of Fiber Optic Cables?
They are inexpensive
They are easy to work with
They can cover a very long distance with low signal loss
Packets travel slower on fiber optic cables
Which of the following is NOT a way that bits (information) travels through the internet?
Light
Radio Waves
Electricity
Circuits
The Internet is:
A philosophy of making information and knowledge accessible to all
A network of networks
Built on open, agreed upon protocols
All of the above
It is possible for an entire country to be disconnected from the Internet, either
accidentally or on purpose.
True
False
What is the latency of a system?
The amount of data (in bits) that can be transmitted at any given time
The distance that data needs to travel in a network
The time it takes for a bit to travel from sender to receiver
The strength of the network connection
What machine listens for HTTP requests to come in to a website’s domain?
A router
A browser
A server
A uniform resource locator
What is a browser?
A website that allows you to search the Internet
A program on your computer that allows you to visit websites
A piece of hardware inside your computer that connects your computer to the Internet
A computer that listens for Internet requests coming into a particular IP address and responds with web pages
Packets of data all travel on the same path as each other to their destination
True
False
In 2023, what is the approximate percentage of the world population that has access to the Internet?
About 35%
About 50%
About 65%
About 90%
Who is considered the "father of the internet"?
I. Ava Lovelace
II. Bob Kahn
III. Vint Cerf
IV. Bill Gates
I only
II only
III only
II and III
