Describe OSI reference model with brief functionality of each layer.
[7 marks]Write the answer in brief. 1. Explain Wide Area Network (4) 2. Describe ARPANET(3)
[7 marks]Discuss effect of noise on parallel lines of twisted pair cable
[7 marks]Write the answer in brief: 1. Differentiate: copper wire and fibre optics (4) 2. Differentiate: Single mode and multi mode fibre (3)
[7 marks]Write the answer in brief: 1. Differentiate: Radio waves & Microwave (4) 2. Differentiate: Infrared & Light waves (3)
[7 marks]Describe Data link layer design issues in brief.
[7 marks]Explain a Stop-and-Wait ARQ protocol for a Noisy Channel.
[7 marks]Write the answer in brief: 1. What is piggybaking? (3) 2. What is sliding window? What is relevance of sending window? (4)
[7 marks]Generate CRC for frame 1101011011 using generator 10011.
[7 marks]What is MAC sub layer? Describe ALOHA in brief.
[7 marks]What is infrastructure mode and ad hoc mode in 802.11 networks?
[7 marks]Describe hidden and exposed station problem. How RTS and CTS help to resolve the problem?
[7 marks]Explain Bluetooth architecture with Protocol Stack.
[7 marks]What is Domain Resource Record? Explain DNS resource record types.
[7 marks]Differentiate Connection oriented and Connection less services.
[7 marks]Draw architecture of WWW and Explain HTTP query and response
[7 marks]Explain why zones are required in DNS
[7 marks]