[Free] 2018(June) Dumps4cert CompTIA SY0-401 Dumps with VCE and PDF Download 1041-1050

Dumps4cert.com : Latest Dumps with PDF and VCE Files
2018 May CompTIA Official New Released SY0-401
100% Free Download! 100% Pass Guaranteed!

CompTIA Security Certification

Question No: 1041 – (Topic 6)

Which of the following cryptographic related browser settings allows an organization to communicate securely?

  1. SSL 3.0/TLS 1.0

  2. 3DES

  3. Trusted Sites

  4. HMAC

Answer: A Explanation:

Secure Sockets Layer (SSL) is used to establish a secure communication connection between two TCP-based machines. Transport Layer Security (TLS) is a security protocol that expands upon SSL. Many industry analysts predict that TLS will replace SSL in the future. TLS 1.0 was first defined in RFC 2246 in January 1999 as an upgrade of SSL Version 3.0. As of February 2015, the latest versions of all major web browsers support TLS 1.0, 1.1, and 1.2, have them enabled by default.

Question No: 1042 – (Topic 6)

Which of the following algorithms has well documented collisions? (Select TWO).

  1. AES

  2. MD5

  3. SHA

  4. SHA-256

  5. RSA

Answer: B,C Explanation:

B: MD5 biggest weakness is that it does not have strong collision resistance, and thus it is no longer recommended for use.

C: SHA-1 (also known as SHA) is being retired from most government uses; the U.S.

National Institute of Standards and Technology said, quot;Federal agencies should stop using SHA-1 for…applications that require collision resistance as soon as practical, and must use the SHA-2 family of hash functions for these applications after 2010quot;, though that was later relaxed.

Note: The hashing algorithm must have few or no collisions. This means that hashing two different inputs does not give the same output.

Cryptographic hash functions are usually designed to be collision resistant. But many hash functions that were once thought to be collision resistant were later broken. MD5 and SHA- 1 in particular both have published techniques more efficient than brute force for finding collisions.

Question No: 1043 – (Topic 6)

The public key is used to perform which of the following? (Select THREE).

  1. Validate the CRL

  2. Validate the identity of an email sender

  3. Encrypt messages

  4. Perform key recovery

  5. Decrypt messages

  6. Perform key escrow

Answer: B,C,E Explanation:

B: The sender uses the private key to create a digital signature. The message is, in effect, signed with the private key. The sender then sends the message to the receiver. The receiver uses the public key attached to the message to validate the digital signature. If the values match, the receiver knows the message is authentic.

C: The sender uses the public key to encrypt a message, and the receiver uses the private key to decrypt the message.

E: You encrypt data with the private key and decrypt with the public key, though the opposite is much more frequent.

Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic protocols based on algorithms that require two separate keys, one of which is secret (or private) and one of which is public. Although different, the two parts of this key pair are mathematically linked.

Question No: 1044 – (Topic 6)

Which of the following provides the HIGHEST level of confidentiality on a wireless network?

  1. Disabling SSID broadcast

  2. MAC filtering

  3. WPA2

  4. Packet switching

Answer: C Explanation:

The Wi-Fi Protected Access (WPA) and Wi-Fi Protected Access 2 (WPA2) authentication protocols were designed to address the core, easy-to-crack problems of WEP.

Question No: 1045 – (Topic 6)

Which of the following explains the difference between a public key and a private key?

  1. The public key is only used by the client while the private key is available to all. Both keys are mathematically related.

  2. The private key only decrypts the data while the public key only encrypts the data. Both keys are mathematically related.

  3. The private key is commonly used in symmetric key decryption while the public key is used in asymmetric key decryption.

  4. The private key is only used by the client and kept secret while the public key is available to all.

Answer: D Explanation:

The private key must be kept secret at all time. The private key is only by the client. The public key is available to anybody.

Question No: 1046 – (Topic 6)

Deploying a wildcard certificate is one strategy to:

  1. Secure the certificate’s private key.

  2. Increase the certificate’s encryption key length.

  3. Extend the renewal date of the certificate.

  4. Reduce the certificate management burden.

Answer: D Explanation:

A wildcard certificate is a public key certificate which can be used with multiple subdomains of a domain. This saves money and reduces the management burden of managing multiple certificates, one for each subdomain.

A single Wildcard certificate for *.example.com, will secure all these domains: payment.example.com

contact.example.com login-secure.example.com www.example.com

Because the wildcard only covers one level of subdomains (the asterisk doesn#39;t match full stops), these domains would not be valid for the certificate:

test.login.example.com

Question No: 1047 – (Topic 6)

Due to hardware limitation, a technician must implement a wireless encryption algorithm that uses the RC4 protocol. Which of the following is a wireless encryption solution that the technician should implement while ensuring the STRONGEST level of security?

A. WPA2-AES

B. 802.11ac

  1. WPA-TKIP

  2. WEP

Answer: C Explanation:

WPA-TKIP uses the RC4 cipher.

TKIP and the related WPA standard implement three new security features to address security problems encountered in WEP protected networks. First, TKIP implements a key mixing function that combines the secret root key with the initialization vector before

passing it to the RC4 initialization. WEP, in comparison, merely concatenated the initialization vector to the root key, and passed this value to the RC4 routine. This permitted the vast majority of the RC4 based WEP related key attacks. Second, WPA implements a sequence counter to protect against replay attacks. Packets received out of order will be rejected by the access point. Finally, TKIP implements a 64-bit Message Integrity Check (MIC)

To be able to run on legacy WEP hardware with minor upgrades, TKIP uses RC4 as its cipher. TKIP also provides a rekeying mechanism. TKIP ensures that every data packet is sent with a unique encryption key.

Question No: 1048 – (Topic 6)

Company employees are required to have workstation client certificates to access a bank website. These certificates were backed up as a precautionary step before the new computer upgrade. After the upgrade and restoration, users state they can access the bank’s website, but not login. Which is the following is MOST likely the issue?

  1. The IP addresses of the clients have change

  2. The client certificate passwords have expired on the server

  3. The certificates have not been installed on the workstations

  4. The certificates have been installed on the CA

Answer: C Explanation:

The computer certificates must be installed on the upgraded client computers.

Question No: 1049 – (Topic 6)

Which of the following would Matt, a security administrator, use to encrypt transmissions from an internal database to an internal server, keeping in mind that the encryption process must add as little latency to the process as possible?

  1. ECC

  2. RSA

  3. SHA

  4. 3DES

Answer: D Explanation:

3DES would be less secure compared to ECC, but 3DES would require less computational power.

Triple-DES (3DES) is a technological upgrade of DES. 3DES is still used, even though AES is the preferred choice for government applications. 3DES is considerably harder to break than many other systems, and it’s more secure than DES. It increases the key length to 168 bits (using three 56-bit DES keys).

Question No: 1050 – (Topic 6)

In which of the following scenarios is PKI LEAST hardened?

  1. The CRL is posted to a publicly accessible location.

  2. The recorded time offsets are developed with symmetric keys.

  3. A malicious CA certificate is loaded on all the clients.

  4. All public keys are accessed by an unauthorized user.

Answer: C Explanation:

A rogue Certification Authority (CA) certificate allows malicious users to impersonate any Web site on the Internet, including banking and e-commerce sites secured using the HTTPS protocol. A rogue CA certificate would be seen as trusted by Web browsers, and it is harmful because it can appear to be signed by one of the root CAs that browsers trust by default. A rogue Certification Authority (CA) certificate can be created using a vulnerability in the Internet Public Key Infrastructure (PKI) used to issue digital certificates for secure Web sites.

100% Dumps4cert Free Download!
Download Free Demo:SY0-401 Demo PDF
100% Dumps4cert Pass Guaranteed!
Download 2018 Dumps4cert SY0-401 Full Exam PDF and VCE

Dumps4cert ExamCollection Testking
Lowest Price Guarantee Yes No No
Up-to-Dated Yes No No
Real Questions Yes No No
Explanation Yes No No
PDF VCE Yes No No
Free VCE Simulator Yes No No
Instant Download Yes No No

Leave a Reply

Your email address will not be published. Required fields are marked *

  • Categories

  • Tags

  • Hot Exams

  • Hot Exams

  • Hot Catageories

  • microsoft dumps

    62-193 Dumps
    70-243 Dumps
    70-246 Dumps
    70-247 Dumps
    70-331 Dumps
    70-332 Dumps
    70-333 Dumps
    70-334 Dumps
    70-339 Dumps
    70-341 Dumps
    70-342 Dumps
    70-345 Dumps
    70-346 Dumps
    70-347 Dumps
    70-348 Dumps
    70-354 Dumps
    70-355 Dumps
    70-357 Dumps
    70-383 Dumps
    70-384 Dumps
    70-385 Dumps
    70-398 Dumps
    70-410 Dumps
    70-411 Dumps
    70-412 Dumps
    70-413 Dumps
    70-414 Dumps
    70-417 Dumps
    70-461 Dumps
    70-462 Dumps
    70-463 Dumps
    70-464 Dumps
    70-465 Dumps
    70-466 Dumps
    70-467 Dumps
    70-469 Dumps
    70-470 Dumps
    70-473 Dumps
    70-475 Dumps
    70-480 Dumps
    70-481 Dumps
    70-482 Dumps
    70-483 Dumps
    70-484 Dumps
    70-485 Dumps
    70-486 Dumps
    70-487 Dumps
    70-488 Dumps
    70-489 Dumps
    70-490 Dumps
    70-491 Dumps
    70-492 Dumps
    70-494 Dumps
    70-496 Dumps
    70-497 Dumps
    70-498 Dumps
    70-499 Dumps
    70-517 Dumps
    70-532 Dumps
    70-533 Dumps
    70-534 Dumps
    70-535 Dumps
    70-537 Dumps
    70-640 Dumps
    70-642 Dumps
    70-646 Dumps
    70-673 Dumps
    70-680 Dumps
    70-681 Dumps
    70-682 Dumps
    70-684 Dumps
    70-685 Dumps
    70-686 Dumps
    70-687 Dumps
    70-688 Dumps
    70-689 Dumps
    70-692 Dumps
    70-694 Dumps
    70-695 Dumps
    70-696 Dumps
    70-697 Dumps
    70-698 Dumps
    70-703 Dumps
    70-705 Dumps
    70-713 Dumps
    70-734 Dumps
    70-735 Dumps
    70-740 Dumps
    70-741 Dumps
    70-742 Dumps
    70-743 Dumps
    70-744 Dumps
    70-745 Dumps
    70-761 Dumps
    70-762 Dumps
    70-764 Dumps
    70-765 Dumps
    70-767 Dumps
    70-768 Dumps
    70-773 Dumps
    70-774 Dumps
    70-775 Dumps
    70-776 Dumps
    70-778 Dumps
    70-779 Dumps
    70-980 Dumps
    70-981 Dumps
    70-982 Dumps
    74-343 Dumps
    74-344 Dumps
    74-409 Dumps
    74-678 Dumps
    74-697 Dumps
    77-418 Dumps
    77-419 Dumps
    77-420 Dumps
    77-421 Dumps
    77-422 Dumps
    77-423 Dumps
    77-424 Dumps
    77-425 Dumps
    77-426 Dumps
    77-427 Dumps
    77-428 Dumps
    77-600 Dumps
    77-601 Dumps
    77-602 Dumps
    77-603 Dumps
    77-604 Dumps
    77-605 Dumps
    77-725 Dumps
    77-726 Dumps
    77-727 Dumps
    77-728 Dumps
    77-729 Dumps
    77-730 Dumps
    77-731 Dumps
    77-853 Dumps
    77-881 Dumps
    77-882 Dumps
    77-883 Dumps
    77-884 Dumps
    77-885 Dumps
    77-886 Dumps
    77-887 Dumps
    77-888 Dumps
    77-891 Dumps
    98-349 Dumps
    98-361 Dumps
    98-362 Dumps
    98-363 Dumps
    98-364 Dumps
    98-365 Dumps
    98-366 Dumps
    98-367 Dumps
    98-368 Dumps
    98-369 Dumps
    98-372 Dumps
    98-373 Dumps
    98-374 Dumps
    98-375 Dumps
    98-379 Dumps
    98-380 Dumps
    98-381 Dumps
    98-382 Dumps
    98-383 Dumps
    98-388 Dumps
    AZ-100 Dumps
    AZ-101 Dumps
    AZ-102 Dumps
    INF-203x Dumps
    INF-204x Dumps
    INF-205x Dumps
    INF-206x Dumps
    MB2-700 Dumps
    MB2-701 Dumps
    MB2-702 Dumps
    MB2-703 Dumps
    MB2-704 Dumps
    MB2-706 Dumps
    MB2-707 Dumps
    MB2-708 Dumps
    MB2-709 Dumps
    MB2-710 Dumps
    MB2-711 Dumps
    MB2-712 Dumps
    MB2-713 Dumps
    MB2-714 Dumps
    MB2-715 Dumps
    MB2-716 Dumps
    MB2-717 Dumps
    MB2-718 Dumps
    MB2-719 Dumps
    MB2-877 Dumps
    MB5-705 Dumps
    MB6-700 Dumps
    MB6-701 Dumps
    MB6-702 Dumps
    MB6-703 Dumps
    MB6-704 Dumps
    MB6-705 Dumps
    MB6-884 Dumps
    MB6-885 Dumps
    MB6-886 Dumps
    MB6-889 Dumps
    MB6-890 Dumps
    MB6-892 Dumps
    MB6-893 Dumps
    MB6-894 Dumps
    MB6-895 Dumps
    MB6-896 Dumps
    MB6-897 Dumps
    MB6-898 Dumps