Unit 2 L1-2-3

Which of the following statements is true regarding computer networks?

• They have the same function as a computing device.

• They do not have any hardware, they only run software programs.

• They are a type of computing system.

• They cannot send or receive data.

Which of the following is NOT a common tradeoff to consider in network design?

• Speed vs Coverage

• Cost vs Security

• Reliability vs Scalability

• Compatibility vs. User Preferences

Which of the following is a negative of using optical fibers to transmit data over the internet?

• Over longer distances, they experience signal loss and degradation.

• Installing the infrastructure can be expensive, which can limit its availability in some areas.

• They can be more susceptible to electromagnetic interference, which impacts signal quality.

• They are shared among multiple users, which can lead to congestion and reduced speeds during peak usage times.

How does redundancy improve the scaling of the internet?

• Redundancy improves the scaling of the internet by making sure the number of network connections are limited to only the devices that use the internet.

• Redundancy improves the scaling of the internet by making sure every packet is repeatedly sent until TCP acknowledges the receipt of it, so that no data is lost in transit.

• Redundancy improves the scaling of the internet by increasing the fault tolerance and reliability of the network.

• Redundancy improves the scaling of the internet by making sure that every device has an IP address and can route internet traffic, even when in idle mode.

The figure below represents a network of physically linked computers labeled A, W, X, E, & P. A line between two computers indicates that the computers can communicate directly with each other. Any information sent between two computers that are not directly connected, must go through at least one other computer. For example, information can be sent directly between computers A and X, but information sent between A and W must go through other computers. What is the minimum number of connections that must be broken or removed in the network before computer A can no longer communicate with computer E?

• 1

• 2

• 3

• None; A cannot communicate with E

Which of the following is not a valid IPv4 address?

• 1.234.56.78

• 12.34.56.78

• 1.2.3.4

• 123.45.6.789

Which of the following best describes the primary function of the Domain Name System (DNS) in internet communication?

• DNS encrypts internet traffic to protect user data.

• DNS assigns unique IP addresses to domain names.

• DNS routes data packets between different networks.

• DNS distributes web content to internet browsers.

What is the primary disadvantage of using cookies in a web browser for user interactions and website functionality?

• They take up storage space on your computer

• Privacy concerns and potential tracking

• Limited website functionality

• Increased security threat from malware

What is the relationship between the World Wide Web (WWW) and a Uniform Resource Locator (URL)?

• WWW and a URL are synonymous and can be used interchangeably.

• WWW is a type of URL used exclusively for educational websites.

• A URL is a software program, while the WWW refers to the hardware infrastructure of the internet.

• A URL is a specific website, while the WWW is a system of linked pages, programs, and files.

Your cellphone provider informs you that both your bandwidth and latency will increase when you switch over to 5G. What does this mean for your wireless connection?

• You will not be able to send as many packets at a time, but your packets will travel faster.

• You will be able to send more packets at a time, but your packets will travel slower.

• You will be able to send more packets at a time, and they will travel faster.

• You will not be able to send as many packets at a time, and they will travel slower.