Operating System (OS)
System generation:

is always very difficult
None of these
is always quite simple
varies in difficulty between systems
requires extensive tools to be understandable

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Assembler language

is a mnemonic form of machine language
is usually the primary user interface
None of these
is quite different from the SCL interpreter
requires fixed-format commands

ANSWER DOWNLOAD EXAMIANS APP