Professional 2 Interview Questions and Answers

To find the number of 1s in a binary number, count the occurrences of '1' in the binary representation.

• Iterate through each digit of the binary number and count the occurrences of '1'.

• Use bitwise operations to check if a digit is '1'.

• Example: For binary number '10101', count the occurrences of '1' which is 3.

SRAM is faster and more expensive than DRAM, but requires more power and is volatile.

• SRAM is faster and more expensive than DRAM

• SRAM is used in CPU caches for quick access to data

• DRAM is slower and cheaper than SRAM

• DRAM is used as main memory in computers

Product certification involves a series of steps to ensure a product meets certain standards and requirements.

• Determine the applicable certification requirements based on the type of product and industry

• Submit the product for testing and evaluation by a certified testing laboratory

• Review the test results and documentation to ensure compliance with standards

• Obtain the necessary certification from a recognized certification body

• Maintain compliance through regular audits and upd...read more

SIP call flow describes the sequence of events that occur during a SIP call.

• SIP INVITE message is sent from the caller to the callee

• Callee responds with a SIP 100 Trying message

• Callee sends a SIP 180 Ringing message to indicate that the call is being processed

• Callee sends a SIP 200 OK message to indicate that the call has been accepted

• Media negotiation takes place between the caller and callee

• Call is terminated with a SIP BYE message