In a microprocessor, the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set, but the interrupt can be delayed or rejected. Such an interrupt is  

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  1. Non-maskable and non-vectored
  2. Maskable and non-vectored
  3. Non-maskable and vectored
  4. Maskable and vectored

Answer (Detailed Solution Below)

Option 4 : Maskable and vectored
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Vectored Interrupt :

In this type of interrupt, the interrupting device directs the processor for the Interrupt service routine.

Maskable

An interrupt whose interrupt service can be stopped from being serviced temporarily is called Maskable Interrupt.

Non-Maskable 

An interrupt whose service cannot be delayed is called Non-Maskable Interrupt

Hence, Given interrupt is Maskable and vectored

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