DMA is used for __________
A. High speed devices(disks and communications network)
B. Low speed devices
C. Utilizing cpu cycles
D. All of the mentioned
What is an interrupt vector?
A. It is an address that is indexed to an interrupt handler
B. It is a unique device number that is indexed by an address
C. It is a unique identity given to an interrupt
D. None of the mentioned
What is an ISR?
A. Information service request
B. Interrupt service request
C. Interrupt service routine
D. Information service routine
What is a trap/exception?
A. Hardware generated interrupt caused by an error
B. Software generated interrupt caused by an error
C. User generated interrupt caused by an error
D. None of the mentioned
How does the software trigger an interrupt?
A. Sending signals to cpu through bus
B. Executing a special operation called system call
C. Executing a special program called system program
D. Executing a special program called interrupt trigger program
To prevent Service Advertisements (SAPs) from flooding a network, Cisco routers do not forward them. How are services advertised to other networks?
A. Each router builds its own sap table and forwards that every 60 seconds
B. Each router assigns a service number and broadcasts that
C. Saps aren’t necessary with cisco routers
D. Cisco routers filter out all saps