unit-1 networks

Which of the following network types covers the largest geographical area?

• A. PAN
• B. LAN
• C. WAN
• D. MAN

Which layer of the OSI model is responsible for error detection and correction in data transmission?

• A. Physical Layer
• B. Data Link Layer
• C. Network Layer
• D. Transport Layer

Which of the following transmission types requires a clock signal to synchronize data transfer between sender and receiver?

• A. Synchronous Transmission
• B. Asynchronous Transmission
• C. Parallel Transmission
• D. Serial Transmission

What is the main advantage of a LAN compared to a WAN?

• A. Higher bandwidth
• B. Larger coverage area
• C. Lower cost
• D. More security

Which layer of the OSI model is responsible for logical addressing and routing of data packets?

• A. Physical Layer
• B. Data Link Layer
• C. Network Layer
• D. Transport Layer

What is the purpose of the framing process in the datalink layer?

• A. To add physical addresses to data packets
• B. To detect and correct transmission errors
• C. To break data into smaller units for transmission
• D. To establish a connection between sender and receiver

Which of the following transmission types is commonly used in high-speed internet connections such as cable or fiber optic networks?

• A. Synchronous Transmission
• B. Asynchronous Transmission
• C. Parallel Transmission
• D. Serial Transmission

Suppose you are designing a network for a small office with ten employees. Which type of network would be most suitable in this case?

• A. LAN
• B. WAN
• C. MAN
• D. PAN

What is the function of the checksum field in the datalink layer?

• A. To add physical addresses to data packets
• B. To detect and correct transmission errors
• C. To break data into smaller units for transmission
• D. To establish a connection between sender and receiver

What is the purpose of the MAC address in the datalink layer?

• A. To add physical addresses to data packets
• B. To detect and correct transmission errors
• C. To break data into smaller units for transmission
• D. To establish a connection between sender and receiver