Technical Questions

• Job queue


• Ready queue


• Device queue

stack is portion of RAM used for saving the content of Program Counter and general purpose registers.

LIFO stacks, also known as "push down" stacks, are the conceptually simplest way of saving information in a temporary storage location for such common computer operations as mathematical expression evaluation and recursive subroutine calling.

It is a technique proposed by Lamport, used to order events in a distributed system without the use of clocks. This scheme is intended to order events consisting of the transmission of messages. Each system 'i' in the network maintains a counter Ci. Every time a system transmits a message, it increments its counter by 1 and attaches the time-stamp Ti to the message. When a message is received, the receiving system 'j' sets its counter Cj to 1 more than the maximum of its current value and the incoming time-stamp Ti. At each site, the ordering of messages is determined by the following rules: For messages x from site i and y from site j, x precedes y if one of the following conditions holds....(a) if Ti

DDks are device driver kits, which are equivalent to SDKs for writing device drivers. Windows NT includes DDks.

An interrupt which can be never be turned off (ie. disabled) is known as Non-Maskable interrupt

extern int i is a declaration and not a definition, hence Error occured.

Risk analysis is a method to determine how much risk is involved in something. In testing, it can be used to determine when to test something or whether to test something at all. Items with higher risk values should be tested early and often. Items with lower risk value can be tested later, or not at all. It can also be used with defects. Severity tells us how bad a defect is: "how much damage can it cause?" Priority tells us how soon it is desired to fix the defect: "should we fix this and if so, by when?"

Defects with High Severity and Priority are tested first.

*( ( a <= 20 ) ? &b : &c ) = 30;