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In a raw Itanium, a "Processor Abstraction Layer" (PAL) is integrated into the system. When it is booted the PAL is loaded into the CPU and gives a low-level interface that abstracts some instructions and gives a mechanism for processor updates distributed via a BIOS update.
During BIOS initialization an additional layer of code, the "System Abstraction Layer" (SAL) is loaded that gives a uniform API for execution-specific platform functions.
On top of the PAL/SAL interface sits the "Extensible Firmware Interface" (EFI). EFI is not part of the IA-64 architecture but by convention it is needed on all IA-64 systems. It is a easy API for access to logical aspects of the system (display, storage, keyboard, etc) combined with a lightweight runtime environment (same to DOS) that allows basic system administration tasks such as configuring storage adapters, flashing BIOS and running an OS boot-loader.
Once the OS has been booted, some aspects of the PAL/SAL/EFI stack remain resident in memory and can be accessed by the OS to perform low-level tasks that are implementation-dependent on the underlying hardware.
What is replacement algorithm? When the cache is full and a memory word that is not in the cache is referenced, the cache control hardware must decide which block should be del
EBS uses an embedded ARM microprocessor.
Differentiate between pre-emptive and non-pre-emptive scheduling. Pre-emptive scheduling : in its approach, center processing unit can be taken away from a process if there is a
Method overloading is to overload methods using similar class name by writing different parameters. This is known as Method Overloading.
Describe briefly how firewalls prevent network. A firewall is only a program or hardware device which filters the information coming via the Internet connection within your pr
a) What command do you use to file all active and available sockets? These should also contain UNIX domain sockets, which are primarily used for local connections. b) What sta
What is a decoder? Draw the logic circuit of a 3 line to 8 line decoder and explain its working. Ans. Decoder: it is a combinational logic circuit which converts Binary words
Define device interface. The buffer registers DATAIN and DATAOUT and the status flags SIN and SOUT are part of circuitry commonly called as a device interface.
What are the differences between a Database index and a match code? Match code can have fields from several tables whereas an index can have fields from only one table.
decomposition
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