networks

What is the term for a network that covers a large geographic area?

• • A) LAN

  
  

• • B) WAN

  
  

• • C) PAN

  
  

• • D) MAN

  
  

What is the name of the global network of interconnected computers that use the TCP/IP protocol to communicate and exchange information?

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• • A) Internet

  
  

• • B) Intranet

  
  

• • C) Ethernet

  
  

• • D) Extranet

  
  

What is the main benefit of using networks and the internet for creating and sharing data and information in a digital society?

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• • A) It reduces the cost of storage and transmission

  
  

• • B) It increases the speed and efficiency of communication and collaboration

  
  

• • C) It enhances the quality and diversity of knowledge and perspectives

  
  

• • D) All of the above

  
  

What is the main challenge of using networks and the internet for accessing and consuming data and information in a digital society?

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• • A) It requires high bandwidth and reliable connectivity

  
  

• • B) It exposes users to security and privacy risks

  
  

• • C) It demands critical thinking and digital literacy skills

  
  

• • D) All of the above

  
  

How have networks and the internet evolved over time in terms of their structure and functionality?

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• • A) They have become more centralized and hierarchical

  
  

• • B) They have become more decentralized and distributed

  
  

• • C) They have become more homogeneous and standardized

  
  

• • D) They have become more heterogeneous and customized

  
  

Which of the following statements is NOT true about networks and the internet?

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• • A) Networks and the internet allow data and information to be created, accessed and shared in a distributed manner

  
  

• • B) Networks and the internet are defining features of digital society that have evolved over time

  
  

• • C) Networks and the internet involve significant opportunities and dilemmas for life in digital society

  
  

• • D) Networks and the internet are synonymous terms that refer to the same phenomenon

  
  

Consider the following scenario: Alice wants to send a confidential message to Bob over the internet. She uses a public-key encryption scheme to encrypt her message with Bob’s public key. Bob receives the encrypted message and decrypts it with his private key. What are the advantages and disadvantages of this method of communication?

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• • A) The advantage is that only Bob can decrypt the message, and the disadvantage is that Alice needs to know Bob’s public key beforehand

  
  

• • B) The advantage is that Alice and Bob do not need to share any secret keys, and the disadvantage is that the encryption and decryption are computationally expensive

  
  

• • C) The advantage is that the encryption and decryption are fast and efficient, and the disadvantage is that anyone can intercept and read the message

  
  

• • D) Both A and B are correct

  
  

What is the difference between a network topology and a network architecture?

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• • A) A network topology is the physical layout of the network devices and cables, and a network architecture is the logical design of the network protocols and services

  
  

• • B) A network topology is the logical design of the network protocols and services, and a network architecture is the physical layout of the network devices and cables

  
  

• • C) A network topology is the set of rules and standards that govern the communication between network devices, and a network architecture is the set of hardware and software components that implement the network functionality

  
  

• • D) A network topology is the set of hardware and software components that implement the network functionality, and a network architecture is the set of rules and standards that govern the communication between network devices

  
  

Which of the following is NOT a characteristic of a peer-to-peer (P2P) network?

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• • A) Each node can act as both a client and a server

  
  

• • B) There is no central authority or server that controls the network

  
  

• • C) The network is scalable and resilient to failures

  
  

• • D) The network requires a dedicated router or switch to connect the nodes

  
  

Suppose you want to download a large file from a website. The website offers two options: HTTP and BitTorrent. Which option would you choose and why?

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• • A) HTTP, because it is faster and more reliable than BitTorrent

  
  

• • B) HTTP, because it is more secure and legal than BitTorrent

  
  

• • C) BitTorrent, because it distributes the file among multiple peers and reduces the load on the website server

  
  

• • D) BitTorrent, because it allows you to resume the download if the connection is interrupted