Set - 1

Question 11 :

What are Super servers?

Answer :

These are fully-loaded machines which includes multiprocessors, high-speed disk arrays for intervene I/O and fault tolerant features.


Question 12 :

What is a TP Monitor?

Answer :

There is no commonly accepted definition for a TP monitor. According to Jeri Edwards' a TP Monitor is "an OS for transaction processing".


Question 13 :

TP Monitor does mainly two things extremely well. They are Process management and Transaction management.?

Answer :

They were originally introduced to run classes of applications that could service hundreds and sometimes thousands of clients. TP Monitors provide an OS - on top of existing OS - that connects in real time these thousands of humans with a pool of shared server processes.


Question 14 :

What is meant by Asymmetrical protocols?

Answer :

There is a many-to-one relationship between clients and server. Clients always initiate the dialog by requesting a service. Servers are passively awaiting for requests from clients.


Question 15 :

What are the types of Transparencies?

Answer :

The types of transparencies the NOS middleware is expected to provide are:-
Location transparency
Namespace transparency
Logon transparency
Replication transparency
Local/Remote access transparency
Distributed time transparency
Failure transparency and
Administration transparency.