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The common safe place to store personal cryptocurrency is_____________.

A.

A digital wallet

B.

in a secure ledger

C.

a bank account

D.

in a secure database

Blockchain has more built-in security than a standard database.

A.

True

B.

False

What is dApp?

A.

A decentralized application

B.

A dishonest application

C.

A decoded application

D.

A distributed application

Who can read records on a public Blockchain?

A.

Everyone on the Blockchain

B.

No one

C.

Only the creator

D.

The users with access permissions

E.

None of the above

What is Ethereum?

A.

Another name for Bitcoin

B.

A platform for creating decentralized applications

C.

A currency

D.

Another name for Blockchain

If a node on the network were to lose a copy of the ledger, the ledger is not lost. The large number of other nodes have a copy and won’t lose track. This is known as___________.

A.

Censorship

B.

Immutability

C.

Transparency

D.

Redundancy

What is a block?

A.

A list or record of data

B.

A wallet that stores digital currency

C.

A pool of unconfirmed transactions

D.

A list or record of certificates

E.

All of the above

One of Blockchain's primary uses of cryptography is ___________.

A.

Keeping the IP addresses a secret

B.

Allowing users to communicate with each other anonymously

C.

Keeping the network configuration a secret.

D.

Providing a public and private encryption key

What is a private Blockchain used instead of a public one?

A.

It is less expensive to develop

B.

It requires less mining power that a public Blockchain

C.

To limit user access and permissions

D.

It requires fewer administrators to manage it

What are the drawbacks of using Blockchain? Select all that apply

A.

High cost of developers

B.

Changing technology and the lack of a stable standard

C.

Its use of cryptography

D.

Its use of new applications