Operating System (OS)
A relocate program form is one which

None of these
can itself performs the relocation of its address-sensitive portions.
All of these
consists of a program and relevant information for its relocation.
cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.

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Operating System (OS)
Link encryption

is used only to debug
is more secure than end-to-end encryption
None of these
is less secure than end-to-end encryption
can not be used in a public network

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Operating System (OS)
The Memory Buffer Register (MBR)

is a hardware memory device which denotes the location of the current instruction being executed.
None of these
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
contains the address of the memory location that is to be read from or stored into.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

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