Question: Preamble field of 802.3 frames is encoded using which encoding technique?

• 1. Bi Polar
• 2. Uni Polar
• 3. Differential Manchester
• 4. Manchester

Question: What is the maximum throughput of pure ALOHA?

• 1. 01%
• 2. 7.4%
• 3. 16.4%
• 4. 18.4%

Question: Hamming distance for the codes generated using either even or odd parity will be?

• 1. 0
• 2. 1
• 3. 2
• 4. 4

Question: Which transmission media suffers more from transmission impairment?

• 1. Wave guides
• 2. Twisted pair
• 3. Coaxial cable
• 4. Optical Fiber

Question: Key concern in the design of transmission system is?

• 1. Distance and Cost
• 2. Speed and Accuracy
• 3. Accuracy and Simplicity
• 4. Data Rate and Distance

Question: Identify example of unguided transmission media?

• 1. Wireless
• 2. Twisted Pair Cable
• 3. Optical Fibers
• 4. Coaxial Cable

Question: In which topology all devices are connected to a central hub?

• 1. Star topology
• 2. Ring topology
• 3. Tree topology
• 4. Bus topology

Question: Which among following are network services?

• 1. Database service
• 2. Print service
• 3. File service
• 4. All of the above

Question: Which technology is used by ethernet system?

• 1. Ring
• 2. Star
• 3. Tree
• 4. Bus

Question: FTP is the abbreviation of?

• 1. File transmission protocol
• 2. File transfer protocol
• 3. Form transfer protocol
• 4. Form transmission protocol