How did the ATBASH cipher work?

By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes Y, etc.)

By rotating text a given number of spaces

By shifting each letter a certain number of spaces

The server that grants Kerberos tickets

What is the basis for the difficulty in breaking RSA?

Equations that describe an elliptic curve

The most widely used digital certificate standard. First issued July 3, 1988. It is a digital document that contains a public key signed by the trusted third party, which is known as a Certificate Authority, or C

Relied on by S/MIME. Contains your name, info about you, and a signature of a person who issued the certificate.

Which of the following is required for a hash?

Variable length input, fixed length output

Not vulnerable to a brute force attack

Variable length input, fixed length output

Used to take the burden off of a CA by handling verification prior to certificates being issued. Acts as a proxy between user and C

Receives request, authenticates it and forwards it to the CA.

PKI (Public Key Infrastructure)

With Cipher feedback (CFB) what happens?

The ciphertext block is encrypted then the ciphertext produced is XOR'd back with the plaintext to produce the current ciphertext block

The block cipher is turned into a stream cipher

The message is divided into blocks and each block is encrypted separately. This is the most basic mode for symmetric encryption

With Electronic codebook (ECB) what happens:

The message is divided into blocks and each block is encrypted separately. This is the most basic mode for symmetric encryption

The cipher text from the current round is XORed with the plaintext from the previous round

The block cipher is turned into a stream cipher

The cipher text from the current round is XORed with the plaintext for the next round

ECCouncil 212-81 Practice Test 3 - Free Online Exam Questions 81-120

Spam

Selling illegal goods, money scams etc.

Hate Speech

Serious attack on a group.

Harassment and bullying

Harassing an individual (including doxing)

Harmful activities

Threatening or glorifying violence or serious harm, including self-harm

Adult content (Consensual)

Nudity/Sexual content

Sexual exploitation and abuse (child safety)

Sexually explicit or suggestive imagery or writing involving minors

Sexual exploitation and abuse (adults and animals)

Sexually explicit or suggestive imagery or writing involving non-consenting adults or non-humans

Plagiarism

Reusing content without attribution (link and blockquotes)

Poorly written

Not in English or has very bad formatting, grammar, and spelling

Inappropriate credential

Author's credential is offensive, spam, or impersonation

Other

Ex. Illegal content, incomplete question...

ECCouncil 212-81 Practice Test 3

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