1. An array has a fixed predetermined number of components.
2. Any component of an array can be accessed using an index.
3. An array variable name refers to a group of quantities by a single name.
4. When array variables are used an appropriate declaration is required.

Match the following:

Assertion (A): Impulse function is an important function in network analysis.

Reason (R): Convolution integral enables us to find the response of a network to an arbitary input in terms of the impulse response.

1. It should accept an intended transmission without excessive delay
2. The data arriving at a receiving point should be processed rapidly
3. When a transmission calls for a response, the delay of response should be minimum.

1. Internal sorting is used if the number of items to be sorted is very large.
2. External sorting is used if the number of items to be sorted is vary large.
3. External sorting needs auxiliary storage.
4. Internal sorting needs auxiliary storage.