Computer Networks and the Internet Quiz
Which of the following is true about geographic information systems (GIS)? More than one answer may be correct.
A GIS uses a global positioning system (GPS) powered by at least 24 satellites. Combined with GPS, GIS is used to guide the transport of goods to different locations. Spatial data generated from GIS is used by organizations to make better decisions.
Which of the following are applications of GIS? More than one answer may be correct.
A gas station uses the location of where travelers are when they search for a gas station on their mobile phone map to determine the best spot to put a billboard advertising their location. Three new neighborhoods are under construction in different parts of a large, rural town. A telecommunications company wants to determine the best locations for cell towers to service all three neighborhoods.
In order for a new block to be added to the blockchain, four criteria must be met. Which of the following are examples of the required criteria? More than one answer may be selected.
A hardware company purchases lumber. The digital signature of the vendor and consumer, as well as the transaction amount and date and time of purchase are stored on a block. An independent bookstore pays off a line of credit used to purchase a bulk order of J.K. Rowling's most recent novel.
A virtual private network creates a secure connection between two computers, allowing for encrypted communications that uses the Internet for data transmissions and communication.
TRUE
Collaboration software allows for the creation of a dedicated workspace where users can add data and workflows, thus enhancing the productivity of teams and organizations.
TRUE
Created in 2015, ethereum is the second most valuable cryptocurrency after bitcoin. Its cryptocurrency is called an ether.
TRUE
One of the technologies on which web services are based is XML. XML stands for Extensible Markup Language.
TRUE
The Internet of Things refers to all devices that are capable of being connected to the Internet.
TRUE
How does VPN software ensure that people accessing a network are authorized to do so?
VPN software authenticates users.
The main advantage of the IPv6 format for IP addresses is that
it can accommodate many more addresses than the IPv4 format.
For the IoT to work properly, you must have which of the following?
network device data
What type of computer users are considered miners?
people who validate cryptocurrency transactions on the digital ledger
Examples of IoT devices include which of the following? More than one answer may be correct.
smart TVs home security cameras smart speakers
With Web 3.0, everyday devices connected to the Web will become
smarter and more capable, given the improved support for the Internet of Things (IoT).
For laptops and tablets to use a LAN to connect to the Internet wirelessly,
the LAN device hosting the ISP connection must act as a wireless access point.
How does each additional block added to the blockchain strengthen the integrity of the entire chain?
Because each block contains information on recording time and sequence for both its transaction and the transaction immediately preceding it, with more blocks there is more transaction history information, making it difficult to falsify.
How is a virtual private network (VPN) different from cloud services security?
Cloud services security includes different policies, procedures, controls, and hardware that make sure cloud-based systems are secure. Virtual Private Networks (VPNs) create a secure connection between two computers. So, while a VPN ensures that individual connections and data transfers are secure, cloud services security works to ensure that the whole system is secure.
Amazon, Kamatera, Salesforce, and Google are all examples of
cloud service providers.
Describe key features of content delivery networks (CDN). More than one answer may be correct.
CDNs are geographically distributed network server groups that work together to deliver web pages and other web content to users. CDNs provide more efficient delivery of Internet and Web content because the closer the CDN server is to the user geographically, the faster the content will be delivered. PoPs include various caching servers that assist in delivering content to website visitors within its operational proximity.
What is the correct term for the small computer within a smartphone that analyzes the sounds entering your phone through the analog/digital converter?
Digital Signal Processor (DSP)
According to the National Institute of Standards and Technology (NIST) there are four cloud computing deployment models. Community cloud is a cloud deployment model where cloud infrastructure is provided to multiple business units within an organization.
FALSE
One noted disadvantage of cloud computing is the issue of overcollaboration between users.
FALSE
What would happen to a cellular network if the base transceiver station stopped functioning? Why?
Since the base transceiver station is responsible for creating low-powered microwave signals that are transmitting cellphone signals to the mobile switching station, a cellular network would not be able to send or receive calls if the station stopped functioning
Which of the following services are often provided by platform as a service (PaaS) vendors? More than one answer may be selected.
build scalable apps without having to write any code provide social media capabilities host hardware and software
A company just received a government contract to provide onboarding services targeted towards people who want to sign up for Medicare. They will be handling sensitive information, including the users' Social Security numbers and home addresses and will host the login page where people will access their Medicare account online. Which of the following are considered major cloud service providers?
cloud services security
What are the major issues faced by organizations in terms of data and information that were addressed by cloud computing? More than one answer may be correct.
data management storage costs
Describe XML and its contribution to the web and web services.
XML stands for Extensible Markup Language and is one of the key technologies upon which web services are based. XML is a markup language based on recommendations from the World Wide Web Consortium (W3C). XML defines rules for document encoding that can be read by humans and machines. Though XML is similar to HTML, HTML has much more limited capabilities, e.g., can only be used to create web pages
A PaaS vendor offers its clients the ability to quickly build a customer loyalty app that allows customers to earn points for every purchase. The client chooses what features they'd like the app to have from a predetermined list of choices. What is this an example of?
mobile software development kit
While using her phone's GPS to drive to her vacation destination, Siena needs to find a gas station. She enters into her phone's GPS that she is looking for a gas station that is no more than five miles away from the route she is currently on. What is this an example of?
proximity location
A cloud-based service offered by vendors and hosted on a vendor's cloud that allows users to access a software application using a web browser and Internet connection is referred to as software as a system.
FALSE
A global positioning system is focused on the capture, analysis, use, and management of spatial location information. It integrates different types of data to create visualizations using maps and 3D scenes.
FALSE
From the following list, select all the characteristics of Internet Protocol (IP) addresses.
An IP address can be static or permanently assigned to a device. An IP address can be translated into a domain name using recognizable words. An IP address in the IPv4 format uses four-decimal notation, such as 182.124.7.9.
A server is a group of two or more devices/computers that are connected to allow them to exchange information and share resources.
FALSE
Trello is a collaboration hub that is composed of channels where teams and members of the organization can communicate, thus replacing email and making communication seamless.
FALSE
The purpose of the application protocol layer of TCP/IP is to
define how email programs and other software communicate within and across networks.
Which cryptocurrency offers a blockchain-based platform that can be used to develop decentralized applications?
ethereum
Explain how the hash contained within each block of the blockchain enhances the security of the entire blockchain?
Each hash is a unique identifier for the block that it is added to, representing the transaction that occurred. Because each block contains not only its hash, but the hash of the previous block, it provides the mechanism which strengthens each block within the chain. Without the data contained within the hash, verifying strings of blockchain would be more difficult and security within the blockchain would be weaker.
Which of the following are correct regarding blockchain? More than one answer may be selected.
For business contracts, blockchain makes it almost impossible to change any information in a contract. This is advantageous for businesses that are dealing with multiple contracts. In supply chain management, blockchain can verify with almost absolute certainty where items and goods are along the supply chain, thus removing guesswork and inefficiencies for shippers and customers. Blockchain can be used to assist with quality assurance by tracing mistakes and errors in manufacturing back to where they occurred.
Explain what happens when an Internet user enters a webpage URL (web address, such as Wikipedia.org) into a browser, to enable the user to view the webpage.
The students should explain the steps the browser takes to process this request, including using DNS to look up the IP address of the desired website, using TCP to address the connection request packet (i.e., create and add a "shipping label"), and sending the request to the website via an ISP. Students also may note that the browser must request and download/receive the webpage contents for them to become viewable.
Which is the best explanation of how the World Wide Web (WWW) differs from the Internet?
The web is only one of many applications that runs on and is accessed through the Internet.
In addition to overall digital flexibility, technological savings, and increased collaboration, computing in the cloud provides organizations with
disaster recovery.
According to the U.S. National Institute of Standards and Technology (NIST), what is rapid elasticity with respect to cloud computing?
Cloud computing relies on the Internet, rather than individual devices, for processing, storage, software, and applications, in addition to other services. Organizations use cloud services instead of internally run and monitored infrastructures for data storage and software management. NIST has identified five essential characteristics of cloud computing, one of which is called rapid elasticity. Rapid elasticity describes how cloud service vendors can easily and quickly, and in some cases automatically, provide expanded computing capabilities per customer needs and demands. Rapid elasticity is one of the greatest benefits of cloud computing for the user: it alleviates concerns of storage capacity limitations and the need for monitoring internal space availability.
Discuss the four types of cloud deployment models outlined by the U.S. National Institute of Standards and Technology (NIST).
Cloud deployment models are configurations of available cloud environment frameworks. These frameworks consist of storage capacity, computing and network needs, and accessibility. NIST has identified four configurations, or cloud deployment models, chiefly by who uses the frameworks and how they use them. The four cloud deployment models are labeled as: private cloud, community cloud, public cloud, and hybrid cloud. Private cloud is a cloud infrastructure that it is used by a single organization with multiple users, for instance a company with various business units. A private cloud may be owned and operated by the organization, a third party, or a combination of the two. It may exist on-premise or off. Community cloud is a cloud infrastructure used by a community of users from organizations who share common concerns and requirements. Like private clouds, community clouds may be owned and operated by the organizations, a third party, or a combination of the two. It may exist on-premise or off. Access to content is generally restricted to those in the community. Public cloud is intended for use by the general public, often for file sharing and email. Access is not restricted. Public clouds can be owned and operated by a variety of entities, e.g. businesses, schools, and government departments. It exists strictly on the premises of the cloud service provider. Hybrid cloud is a combination of any of the other three infrastructures. Each of the infrastructures maintains its unique identity, but all are bound by technology that enables portability of data and applications.
Which of the following statements about blockchain are true? More than one answer may be selected.
In blockchain, the previous hash links two blocks together, which prevents anyone from inserting a block where one should not be. At its inception, members of a newly created blockchain network must agree to the rules and guidelines that will govern their blockchain.
