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NSA COMPUTER NETWORK TEST EXAM WITH GUARANTEED ACCURATE ANSWERS

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NSA COMPUTER NETWORK

Institution
NSA COMPUTER NETWORK

What are the 2 keys to decimal/hex/octal/binary conversions? - ACCURATE ANSWERS 1. Binary is the intermediary 2. BE CAREFUL What is endianness? - ACCURATE ANSWERS The order or sequence of bytes of a word of digital data in computer memory What is big endian? - ACCURATE ANSWERS The most signi...

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nsa computer network test exam
nsa computer network test exam with guaranteed acc

Institution NSA COMPUTER NETWORK
Course NSA COMPUTER NETWORK

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NSA COMPUTER NETWORK TEST
EXAM
NSA COMPUTER NETWORK TEST EXAM WITH GUARANTEED ACCURATE ANSWERS

What are the 2 keys to decimal/hex/octal/binary conversions? -
ACCURATE ANSWERS✔✔ 1. Binary is the intermediary
2. BE CAREFUL

What is endianness? - ACCURATE ANSWERS✔✔ The order or
sequence of bytes of a word of digital data in computer memory

What is big endian? - ACCURATE ANSWERS✔✔ The most significant
byte is stored at the smallest memory address and the least significant
byte is stored at the largest memory address

,What is little endian? - ACCURATE ANSWERS✔✔ The most
significant byte is stored at the largest memory address and the least
significant byte is stored at the smallest memory address

With regards to endianness, what is "network order?" - ACCURATE
ANSWERS✔✔ Network order refers to data being sent across a
medium in big endian (most significant byte first) in the Internet
Protocol

What is the endianness of most processor architectures, including Intel
x86, AMD x86-64, ARM, and RISK-V? - ACCURATE ANSWERS✔✔
Little endian

In what two situations is paying attention to endianness important? -
ACCURATE ANSWERS✔✔ 1. When sending data between two
different computers. The communication protocol must ensure that even
if the two computers' endianness differs, the data isn't corrupted. IP does
this by defaulting to network order.

2. When investigating memory dumps. You must understand the
endianness of the computer whom the memory dump comes from to
properly be able to analyze the dump.

4 part memory hierarchy - ACCURATE ANSWERS✔✔ 1. Registers
2. Caches
3. Main memory
4. Storage

,How many bytes are in a word? - ACCURATE ANSWERS✔✔ 2 bytes

How many bytes are in a single ASCII character? - ACCURATE
ANSWERS✔✔ 1 byte

How many bytes are in a single UTF-8 character? - ACCURATE
ANSWERS✔✔ 1 to 4 bytes (variable)

What are the 5 segments of a process's memory? - ACCURATE
ANSWERS✔✔ From low to high addresses:
1. Text segment (code / executable instructions)
2. Initialized data segment
3. Uninitialized data segment
4. Heap segment (dynamic memory allocations, grows toward high
addresses)
5. Stack segment (function arguments, local variables, grows toward low
addresses)

What is a *solid state drive*? - ACCURATE ANSWERS✔✔ An SSD is
a form of memory that uses integrated circuits for persistent memory
(flash memory)

What is a *hard disk drive*? - ACCURATE ANSWERS✔✔ An HDD is
a form of memory that uses magnetic properties to store and retrieve
digital data on spinning disks

, What is user space? - ACCURATE ANSWERS✔✔ The section of
memory in which normal user processes run. Processes running in this
space only have access to a limited part of this space (the process's own
space and any shared memory sections). Process in this space can only
access kernel space through controlled system calls.

What is kernel space? - ACCURATE ANSWERS✔✔ The section of
memory in which kernel processes run. Processes running in this space
have access to all memory spaces, user and kernel. Significantly higher
privilege than user space.

Name the seven layers of the *OSI model* - ACCURATE
ANSWERS✔✔ 1: Physical
2: Data Link
3: Network
4: Transport
5: Session
6: Presentation
7: Application

Name the four layers of the *TCP/IP model* - ACCURATE
ANSWERS✔✔ 1: Link
2: Internet
3: Transport
4: Application

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