Computer Networks Lecture 1: Introduction and Application Layer
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Questions and Answers

What is the primary focus of the book 'Computer Networking: A Top Down Approach' by Jim Kurose and Keith Ross?

  • Transport layer protocols
  • Internet structure and performance (correct)
  • Data link layer protocols
  • Application layer protocols

Which chapter of the book 'Computer Networking: A Top Down Approach' is likely to cover the topic of network core?

  • Chapter 1
  • Chapter 4 (correct)
  • Chapter 3
  • Chapter 2

What are the main components included in the network edge according to the lecture agenda?

  • Packet/circuit switching, Internet structure
  • Service models and layers
  • Hosts, access networks, physical media (correct)
  • Loss, delay, throughput

Which of the following is NOT included in the lecture agenda for Introduction to the Internet?

<p>Protocol definition (A)</p> Signup and view all the answers

What is the Internet primarily described as, based on the provided text?

<p>A network of networks (C)</p> Signup and view all the answers

Which layer of the OSI model is likely to be covered in Chapter 5 of the book 'Computer Networking: A Top Down Approach'?

<p>Link Layer (B)</p> Signup and view all the answers

What is the function of packet switches?

<p>Forward packets between different networks (A)</p> Signup and view all the answers

Which devices are considered as traditional computing devices?

<p>Linux workstations (B)</p> Signup and view all the answers

What is the main function of network edges?

<p>Host computing devices (B)</p> Signup and view all the answers

What is the role of the Internet in connecting computing devices?

<p>Interconnects billions of computing devices throughout the world (B)</p> Signup and view all the answers

What types of physical media are used for communication links?

<p>Optical fiber and radio spectrum (C)</p> Signup and view all the answers

What do non-traditional computing devices include?

<p>Watches and eye glasses (B)</p> Signup and view all the answers

How are data transmission rates measured?

<p>In bits/second (A)</p> Signup and view all the answers

What is the function of a router in packet switching?

<p>Forward packets between different networks (C)</p> Signup and view all the answers

What do end systems do when they have data to send to another end system?

<p>Segment the data and add header bytes to each segment (D)</p> Signup and view all the answers

What is the main function of network core?

<p>Interconnect routers/switches or network of networks (D)</p> Signup and view all the answers

What is the average transmission rate offered by 802.11 (WiFi) protocol in Wireless LANs?

<p>450 Mbps (A)</p> Signup and view all the answers

Which technology is used to offer between 1 and 10 Mbps in Wide-area Wireless or cellular networks?

<p>3G (A)</p> Signup and view all the answers

What is the primary network coverage for Wide-area Wireless or cellular networks?

<p>1-5 km (D)</p> Signup and view all the answers

Which protocol is used for network coverage within a building in Wireless LANs?

<p>802.11 (WiFi) (C)</p> Signup and view all the answers

What is the book reference for the lecture 'Computer Networks Lecture 2'?

<p>Addison-Wesley, 2012 (B)</p> Signup and view all the answers

What are the two categories into which wireless networks could be categorized?

<p>Wireless Local Area Networks and Wireless Wide Area Networks (D)</p> Signup and view all the answers

What type of communication media transmits data in electron format and includes two types, Category 5 and Category 6?

<p>Twisted pair copper (D)</p> Signup and view all the answers

Which communication method involves establishing a dedicated communication path between two devices before data transmission begins?

<p>Circuit switching (D)</p> Signup and view all the answers

What type of communication media carries signals in the electromagnetic spectrum without wires and is commonly used in wireless LAN and wide-area networks?

<p>Electro-magnetic radio waves (C)</p> Signup and view all the answers

Which guided physical media transmits data in electron format using glass fiber carrying light pulses?

<p>Fiber optic cable (B)</p> Signup and view all the answers

What is the primary disadvantage of electro-magnetic radio waves as a physical communication media?

<p>Obstruction by objects (B)</p> Signup and view all the answers

Which method of data transmission involves dividing data into smaller units called packets?

<p>Packet switching (C)</p> Signup and view all the answers

What is the characteristic of circuit switching where the circuit remains dedicated to the communication for the duration of the session?

<p>End-to-end resources allocated (D)</p> Signup and view all the answers

What distinguishes Category 5 twisted pair copper from Category 6 twisted pair copper?

<p>$100$ Mbps transmission rate vs $1$ Gbps transmission rate (D)</p> Signup and view all the answers

Which type of communication media transmits data in electron format using two concentric copper conductors?

<p>Coaxial cable (C)</p> Signup and view all the answers

What is the distinguishing feature of fiber optic cable in terms of data transmission?

<p>Low error rate (B)</p> Signup and view all the answers
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