C839V5 REAL EXAMINATION. LATEST
UPDATE. QUESTIONS AND
ELABORATE ANSWERS. 2026. PASS
GUARANTEE.
- ANSWER-gas - QUESTION -Within Ethereum applications we define the
concept of _____. This is basically the unit that is used to measure the amount
of work that is required to perform a single Keccak-256 hash.
A. gas
B. mining
C. smart contracts
- ANSWER-NOBUS ('nobody but us') - QUESTION -A _____ backdoor
describes an instance where it is where it is mathematically possible for
government agents to crack the encryption, but no-one else can.
A. true random
B. key escrow
C. NOBUS
- ANSWER-64 - QUESTION -Skipjack has a block size of _____bits.
A. 64
,B. 80
C. 128
- ANSWER-160 - QUESTION -The hash value in bits for SHA-1 is ____.
A. 128
B. 160
C. 256
- ANSWER-128 - QUESTION -The hash value in bits for MD4 is ____.
A. 128
B. 160
C. 256
128 - QUESTION -The hash value in bits for MD5 is ____.
A. 128
B. 160
C. 256
,- ANSWER-variable; fixed - QUESTION -Hashing involves taking a _____
length input and producing a _____ length output (message digest).
A. fixed; fixed
B. variable; fixed
C. fixed; variable
- ANSWER-Transport - QUESTION -IPSec ______ mode involves "end-to-
end" encryption; i.e. data remains encrypted from the time it leaves a sender's
device to the time it arrives at the receiver's device.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Tunnel - QUESTION -IPSec ______ mode involves encryption
from gateway to gateway, i.e. just through the public network space.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Tunnel
, Remember, with tunnel mode, encryption does not happen until just before it
leaves the local network. Traffic likely remains unencrypted between the end
user device and the local network boundary. - QUESTION -A security
analyst on a local network using monitoring tools is likely to only be able to
read contents of traffic encrypted using IPSec ______ mode.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Chas key - QUESTION -_____ is a lightweight cryptography
method for signing messages (MAC). It boasts a relatively undemanding
hardware implementation (only ~3,333 gates required at 1MHz clock rate)
making it suitable for IoT implementation.
- ANSWER-128 - QUESTION -Chas key has a key size of _____ bits.
A. 256
B. 128
C. 80
UPDATE. QUESTIONS AND
ELABORATE ANSWERS. 2026. PASS
GUARANTEE.
- ANSWER-gas - QUESTION -Within Ethereum applications we define the
concept of _____. This is basically the unit that is used to measure the amount
of work that is required to perform a single Keccak-256 hash.
A. gas
B. mining
C. smart contracts
- ANSWER-NOBUS ('nobody but us') - QUESTION -A _____ backdoor
describes an instance where it is where it is mathematically possible for
government agents to crack the encryption, but no-one else can.
A. true random
B. key escrow
C. NOBUS
- ANSWER-64 - QUESTION -Skipjack has a block size of _____bits.
A. 64
,B. 80
C. 128
- ANSWER-160 - QUESTION -The hash value in bits for SHA-1 is ____.
A. 128
B. 160
C. 256
- ANSWER-128 - QUESTION -The hash value in bits for MD4 is ____.
A. 128
B. 160
C. 256
128 - QUESTION -The hash value in bits for MD5 is ____.
A. 128
B. 160
C. 256
,- ANSWER-variable; fixed - QUESTION -Hashing involves taking a _____
length input and producing a _____ length output (message digest).
A. fixed; fixed
B. variable; fixed
C. fixed; variable
- ANSWER-Transport - QUESTION -IPSec ______ mode involves "end-to-
end" encryption; i.e. data remains encrypted from the time it leaves a sender's
device to the time it arrives at the receiver's device.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Tunnel - QUESTION -IPSec ______ mode involves encryption
from gateway to gateway, i.e. just through the public network space.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Tunnel
, Remember, with tunnel mode, encryption does not happen until just before it
leaves the local network. Traffic likely remains unencrypted between the end
user device and the local network boundary. - QUESTION -A security
analyst on a local network using monitoring tools is likely to only be able to
read contents of traffic encrypted using IPSec ______ mode.
A. Tunnel
B. Transport
C. Trusted
- ANSWER-Chas key - QUESTION -_____ is a lightweight cryptography
method for signing messages (MAC). It boasts a relatively undemanding
hardware implementation (only ~3,333 gates required at 1MHz clock rate)
making it suitable for IoT implementation.
- ANSWER-128 - QUESTION -Chas key has a key size of _____ bits.
A. 256
B. 128
C. 80
