A legal firm needs to send a contract to a client and later prove that the client received the exact document and that it was not altered. The firm also wants to prove that they sent it. Which cryptographic process should the firm use?

Send a SHA-256 hash of the contract via email and the contract separately.

Sign the contract with the firm's private key and send the signed document to the client.

Use a symmetric key to encrypt the contract and share the key over the phone.

Encrypt the contract with the client's public key and send it.

Which component of a public key infrastructure (PKI) is responsible for issuing and revoking digital certificates?

Certificate Revocation List (CRL)

A network administrator is troubleshooting an issue where two servers using TLS 1.2 are failing to establish a connection. The error log shows 'no shared cipher'. The servers are configured with different cipher suites. Which action should the administrator take to resolve the issue while maintaining strong security?

Disable all cipher suites on both servers and use a pre-shared key for encryption.

Use a weaker cipher suite like TLS_RSA_WITH_AES_128_CBC_SHA to ensure compatibility.

Replace the servers' certificates with self-signed certificates to bypass cipher negotiation.

Configure both servers to support a common set of strong cipher suites, such as TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384.

EC-CouncilNetwork Defense Essentials

Domain 6Objective 1

Cryptographic Techniques and Algorithms NDE Practice Questions (Page 6)

Part of the Cryptography, PKI, and Data Security domain, which makes up ~15% of our current practice bank.

39questions here

8free pages

6concepts

Questions 26–30

26application · medium
A legal firm needs to send a contract to a client and later prove that the client received the exact document and that it was not altered. The firm also wants to prove that they sent it. Which cryptographic process should the firm use?
Select an answer first
27foundation · easy
Which of the following is an asymmetric encryption algorithm?
Select an answer first
28foundation · easy
Which component of a public key infrastructure (PKI) is responsible for issuing and revoking digital certificates?
Select an answer first
29expert · hard
A network administrator is troubleshooting an issue where two servers using TLS 1.2 are failing to establish a connection. The error log shows 'no shared cipher'. The servers are configured with different cipher suites. Which action should the administrator take to resolve the issue while maintaining strong security?
Select an answer first
30foundation · easy
Which algorithm is an example of symmetric encryption?
Select an answer first

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Cryptographic Techniques and Algorithms NDE Practice Questions (Page 6)

Questions 26–30

A legal firm needs to send a contract to a client and later prove that the client received the exact document and that it was not altered. The firm also wants to prove that they sent it. Which cryptographic process should the firm use?

Which of the following is an asymmetric encryption algorithm?

Which component of a public key infrastructure (PKI) is responsible for issuing and revoking digital certificates?

Which algorithm is an example of symmetric encryption?

Keep studying — Cryptography, PKI, and Data Security