Instant Access EC-COUNCIL.212-81.v2023-05-30.q74 Actual Practice Test Engine for Free (Page 16)

Welcome to DumpsDB

- Passing Exams, Dumps for Free

Request Exam Contact

Home
Popular Exams
- Oracle
- Fortinet
- Juniper
- Microsoft
- Cisco
- Citrix
- CompTIA
- VMware
- SAP
- EMC
- PMI
- HP
- Salesforce
View All Exams
New Dumps
Upload

Oracle
Fortinet
Juniper
Microsoft
Cisco
Citrix
CompTIA
VMware
SAP
EMC
PMI
HP
Salesforce

Home
EC-COUNCIL Certification
212-81 Exam
EC-COUNCIL.212-81.v2023-05-30.q74 Dumps

««
«
…
7
8
9
10
11
12
13
14
15
16

Question 71

This algorithm was published by the German engineering firm Seimans in 1993. It is a software based stream cipher using Lagged Fibonacci generator along with a concept borrowed from the shrinking generator ciphers.

A.RC4
B.Blowfish
C.Twofish
D.FISH

Correct Answer: D

FISH
https://en.wikipedia.org/wiki/FISH_(cipher)
The FISH (FIbonacci SHrinking) stream cipher is a fast software based stream cipher using Lagged Fibonacci generators, plus a concept from the shrinking generator cipher. It was published by Siemens in 1993. FISH is quite fast in software and has a huge key length. However, in the same paper where he proposed Pike, Ross Anderson showed that FISH can be broken with just a few thousand bits of known plaintext.

Comment: *

Name: *

Email: *

Verification: *

insert code

Question 72

Which of the following is an asymmetric algorithm that was first publically described in 1977?

A.Elliptic Curve
B.Twofish
C.DESX
D.RSA

Correct Answer: D

RSA
https://en.wikipedia.org/wiki/RSA_(cryptosystem)
RSA (Rivest-Shamir-Adleman) is a public-key cryptosystem that is widely used for secure data transmission. It is also one of the oldest. The acronym RSA comes from the surnames of Ron Rivest, Adi Shamir, and Leonard Adleman, who publicly described the algorithm in 1977.
Incorrect answers:
Elliptic Curve - Elliptic-curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. ECC allows smaller keys compared to non-EC cryptography (based on plain Galois fields) to provide equivalent security.
Twofish - is a symmetric key block cipher with a block size of 128 bits and key sizes up to 256 bits. It was one of the five finalists of the Advanced Encryption Standard contest, but it was not selected for standardization. Twofish is related to the earlier block cipher Blowfish.
DESX - is a variant on the DES (Data Encryption Standard) symmetric-key block cipher intended to increase the complexity of a brute-force attack using a technique called key whitening.

Comment: *

Name: *

Email: *

Verification: *

insert code

Question 73

John is going to use RSA to encrypt a message to Joan. What key should he use?

A.A random key
B.Joan's public key
C.A shared key
D.Joan's private key

Correct Answer: B

Joan's public key
https://en.wikipedia.org/wiki/RSA_(cryptosystem)
Suppose Joahn uses Bob's public key to send him an encrypted message. In the message, she can claim to be Alice but Bob has no way of verifying that the message was actually from Alice since anyone can use Bob's public key to send him encrypted messages. In order to verify the origin of a message, RSA can also be used to sign a message.
Suppose Alice wishes to send a signed message to Bob. She can use her own private key to do so. She produces a hash value of the message, raises it to the power of d (modulo n) (as she does when decrypting a message), and attaches it as a "signature" to the message. When Bob receives the signed message, he uses the same hash algorithm in conjunction with Alice's public key. He raises the signature to the power of e (modulo n) (as he does when encrypting a message), and compares the resulting hash value with the message's actual hash value. If the two agree, he knows that the author of the message was in possession of Alice's private key, and that the message has not been tampered with since.

Comment: *

Name: *

Email: *

Verification: *

insert code

Question 74

WPA2 uses AES for wireless data encryption at which of the following encryption levels?

A.128 bit and CRC
B.128 bi and TKIP
C.128 bit and CCMP
D.64 bit and CCMP

Correct Answer: C

128 bit and CCMP
Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) is an encryption protocol that forms part of the 802.11i standard for wireless local area networks (WLANs), particularly those using WiMax technology. CCMP employs 128-bit keys and a 48-bit initialization vector that minimizes vulnerability to replay attacks.

Comment: *

Name: *

Email: *

Verification: *

insert code

««
«
…
7
8
9
10
11
12
13
14
15
16

[×]

Download PDF File

Enter your email address to download EC-COUNCIL.212-81.v2023-05-30.q74 Dumps

Email:

We are the Largest and the most Updated website for all vendors Certification Exam materials around the world.

Using resources of we provide, we strive using dumps to strengthen the community of High level Certification professionals for free.

DMCA
About
Contact Us
Privacy Policy
Terms & Conditions

©2025 DumpsDB

www.dumpsdb.com materials do not contain actual questions and answers from Cisco's certification exams.

Web Analytics