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WorksheetsUnit 8: Network Fundamentals
Total questions: 29
Worksheet time: 15mins
When we send information over the internet, the data we are sending is broken down into small pieces called:
packets
frames
segments
chunks
According to the Domain Name System (DNS), which of the following is not a subdomain of the domain example.com?
example.com/home
about.example.com
blog.example.com
info.example.com
What is the time it takes for a bit to travel from sender to receiver?
bandwidth
latency
throughput
packet loss
When sending bits using light, how do we know when one bit's transmission ends and the next one begins?
By using a clock/timer
By using a stop signal
By using a pause signal
By using a reset signal
Which of the following connection types is the most expensive to implement?
Fiber optic cables
Coaxial cables
Twisted pair cables
Wireless connection
Which of the following connection types is the least expensive to implement?
Ethernet cables(cat-5)
Fiber optic cables
DSL connection
Satellite connection
Which of the following connection types will transmit data the quickest and most reliably?
Fiber optic cables
Coaxial cables
Wireless connection
Twisted pair cables
Which of the following is used to transmit data using light?
Fiber optic cables
Coaxial cables
Twisted pair cables
Ethernet cables(cat-5)
Which of the following is used to transmit data using radio waves?
Wireless routers
Fiber optic cables
Ethernet cables(cat-5)
DSL connection
Which of the following is used to transmit data using electricity?
Ethernet cables (cat-5)
Fiber optic cables
Coaxial cables
Wireless connection
Which of the following is not one of the three main ways we send data over the internet?
Smoke
Electricity
Light
Radio waves
Which of the following helps route the data to the correct destination, and helps piece the data together at the destination?
Metadata
Encryption
Compression
Decryption
Which of the following would pose the greatest threat to a user’s personal privacy if it were to be leaked to the public?
The user’s browser cookies
The user’s search history
The user’s email address
The user’s phone number
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?
Putting helpful tips for operating computers on the city government website
Providing free public Wi-Fi in underserved areas
Subsidizing the cost of computers for low-income families
Offering computer literacy classes for senior citizens
What is the function of the Domain Name System (DNS)?
To translate domain names into IP addresses
To encrypt data transmission
To compress data for faster transmission
To authenticate user identities
What is the purpose of packet metadata?
Metadata helps route the data to the correct destination, and helps piece the data together at the destination
Metadata helps encrypt the data for secure transmission
Metadata helps compress the data for faster transmission
Metadata helps authenticate the sender of the data
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 sent as a single unit over the network. The user’s computer reassembles the file upon receipt.
The file is compressed and then sent over the network. The user’s computer decompresses the file upon receipt.
The file is encrypted and then sent over the network. The user’s computer decrypts the file upon receipt.
Which of the following protocols allows for sending multiple packets between two computers by checking that all packets arrived and that they can be put back together in the proper order?
Transmission Control Protocol (TCP)
Internet Protocol (IP)
User Datagram Protocol (UDP)
Hypertext Transfer Protocol (HTTP)
What information is contained in a packet?
A small part of a digital message, and metadata about the message, including where it came from and where it is going.
The entire digital message, including all its parts and attachments.
Only metadata about the message, including the sender's name and address.
Only the recipient's information, including the recipient's name and address.
What is the function of the Domain Name System (DNS)?
To translate domain names into IP addresses
To encrypt data transmission
To compress data for faster transmission
To authenticate user identities
What is the latency of a system?
The time it takes for a bit to travel from sender to receiver
The amount of data that can be sent in a fixed amount of time
The measure of how many bits can be sent per unit of time
The measure of how many packets can be sent per unit of time
How is the bandwidth of a network measured?
bitrate
latency
throughput
packet loss
What is the bitrate of a system?
The amount of data (in bits) that can be sent in a fixed amount of time
The time it takes for a bit to travel from sender to receiver
The measure of how many bits can be sent per unit of time
The measure of how many packets can be sent per unit of time
Which of the following makes sure that each request is forwarded to its intended recipient?
Router
Switch
Hub
Firewall
Which of the following refers to a widely agreed upon set of rules that standardize communication between machines?
Protocol
Algorithm
Encryption
Decryption
True or False: The Internet is non-existent in the developing world.
True
False
True or False: The Internet is a network connecting individual networks.
True
False
How many possible values can be created with only 2 bits?
2
4
8
16
How many bits are used to encode a character according to the ASCII encoding scheme?
4
6
8
10
