can you solve them all please

What is the OSI model used for? A. To describe the different functions of a computer system B. To describe the different layers of a network communication C. To describe the different types of software How many layers does the OSI model have? A. 3 B. 5 C. 7 What is the first layer of the OSI model? A. Physical Layer B. Data Link Layer C. Network Layer What is the main function of the Data Link Layer? A. To provide reliable data transmission B. To provide error detection and correction C. To provide data encryption What is the main function of the Transport Layer? A. To provide reliable data transmission B. To provide flow control C. To provide data encryption What is the main function of the Session Layer? A. To establish, maintain, and terminate sessions between applicat B. To provide data encryption What is the main function of the Presentation Layer? A. To provide a common format for data exchange between applications B. To provide error detection and correction C. To provide data encryption What is the main function of the Application Layer? A. To provide a common interface for applications to access network services B. To provide error detection and correction C. To provide data encryption What is the main function of the Physical Layer? A. To provide the mechanical, electrical, and functional interface to the network B. To provide error detection C. To provide data encryptic What is the purpose of a router in networking? A. To provide a unique identifier for each device on a network B. To connect different network segments and determine the best path for data transmission C. To provide a common format for data exchange between applications What is the purpose of a switch in networking? A. To connect different network segments and determine the best path for data transmission B. To provide a unique identifier for applications to access network services 1. What is the main function of the Physical Layer in the OSI model? 2. What is the difference between the Data Link Layer and the Network Layer in the OSI model? 4. What is the main function of the Application Layer in the OSI model? What is the difference between a packet and a frame? A. A packet contains data, while a frame contains both data and header information B. A packet contains header information, while a frame contains both data and header information C. A packet and a frame are the same What is encapsulation in the OSI model? A. The process of adding header information to data 8. The process of removing header information from data C. The process of compressing data What is the purpose of IP addressing in networking? A. To provide a unique identifier for each device on a network B. To provide a common format for data exchange between applications