Blockchain Developer Test 4 - Practice Test Geeks

What are the fundamental Blockchain principles that are useful in removing the security risks that must be adhered to?

Securing testing and related methods

Securing applications

Auditing

All of the above

None of the above

Correct! Wrong!

Which of the following is present in each block of a blockchain?

Transactions list

A pointer to the preceding block's hash

Timestamp

All of the above

Correct! Wrong!

In the blockchain, a block can only have one parent block at a time.

True

False

Sometimes

Correct! Wrong!

Which of the following can happen as a result of a blockchain fork?

Multiple hacks

Multiple parent blocks

Multiple children blocks

All of the above

Correct! Wrong!

Which of the following can happen as a result of a blockchain fork?

Tripple DEA

RSA

Blowfish

Twofish

Correct! Wrong!

Which of the above commands is used to establish a connection to an existing Blockchain?

multichaind stockexchange [ip-address]:[-port]

multichaind stockexchange@[ip-address:port]

multichaind @[ip-address]:[port]

multichain stockexchange@[ip-address]:[port]

Correct! Wrong!

On the second server, the multichaind name of multichain>@[ip-address]:[port] command is used to connect to this initialized Blockchain.

The first distributed blockchain implementation is which of the following?

Ethereum

Bitcoin

Ledger

All of the above

Correct! Wrong!

Which of the following can be used to store a blockchain?

A Database

A flat file

Both options are correct

None of the options are correct

Correct! Wrong!

Which of the following cryptographic algorithms is used to generate the hash that uniquely identifies each block in the Blockchain?

SHA256

SHA128

SHA129

Correct! Wrong!

The main advantage of immutability is _______.

Increased Efficiency

Tamper Proof

Accountability

Security settings is more reliable.

Correct! Wrong!

Bitcoin is based on what blockchain?

Public

Private

Private Permissioned

Coded

Correct! Wrong!