CCNA Module 2: Chapter 1 Questions and Answers

CCNA Module 2: Chapter 1 Questions and Answers


Welcome to the first chapter of Module 2 in the CCNA curriculum! This chapter covers important concepts related to networking, including protocols, network models, and network devices. To help solidify your understanding, we have compiled a list of questions and answers that will test your knowledge and enhance your learning experience.

Chapter 1 Questions

  1. What is a computer network?
  2. What are the advantages of using a network model?
  3. Describe the layers of the OSI model.
  4. What are the main components of a LAN?
  5. What is a protocol?
  6. Explain the concept of data encapsulation.
  7. What is the purpose of a router?
  8. What is the difference between a hub and a switch?
  9. What is the function of a firewall?
  10. What are the two main types of IP addresses?

Chapter 1 Answers

  1. A computer network is a collection of interconnected devices, such as computers, servers, and routers, that are linked together to facilitate communication and resource sharing.
  2. Using a network model provides a structured approach to designing, implementing, and troubleshooting networks. It allows for better organization, scalability, and interoperability.
  3. The OSI (Open Systems Interconnection) model consists of seven layers:
    1. Physical layer
    2. Data link layer
    3. Network layer
    4. Transport layer
    5. Session layer
    6. Presentation layer
    7. Application layer
  4. A LAN (Local Area Network) includes devices such as computers, switches, and routers within a limited geographical area, such as a home, office, or campus.
  5. A protocol is a set of rules and standards that govern how data is transmitted and received over a network.
  6. Data encapsulation is the process of wrapping data in different protocol headers as it moves down the layers of the OSI model. It adds the necessary addressing and control information to the data.
  7. A router is a networking device that directs data packets between different networks. It uses routing tables and logical addresses to determine the best path for data transmission.
  8. A hub is a simple networking device that broadcasts data to all connected devices, while a switch intelligently forwards data only to the intended recipient based on MAC addresses.
  9. A firewall is a security device that monitors and controls incoming and outgoing network traffic based on predefined security rules. It helps protect the network from unauthorized access and potential threats.
  10. The two main types of IP addresses are IPv4 and IPv6. IPv4 addresses are 32 bits long and expressed in decimal format (e.g.,, while IPv6 addresses are 128 bits long and expressed in hexadecimal format (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).


By answering these questions, you have gained a deeper understanding of the fundamental concepts covered in Chapter 1 of CCNA Module 2. Remember to continue exploring and practicing to strengthen your knowledge in preparation for the next chapters.

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