Two Users Need to Send Each Other Emails Over Unsecured

question 714

Multiple Choice

Two users need to send each other emails over unsecured channels. The system should support the principle of non-repudiation. Which of the following should be used to sign the user's certificates?

• A) RA
• B) CA
• C) CRL
• D) CSR

---

Definitions:

Tracheostomy Tube

A tube inserted into a surgically created hole in the trachea to maintain an open airway or to deliver oxygen.

Mechanically Ventilate

To provide assistance or support to a patient’s breathing using a machine (ventilator), often used when a patient cannot breathe adequately on their own.

Nasotracheal Suctioning

A procedure to remove secretions from the nose and trachea to maintain airway patency and prevent infection.

Heart Rate

The number of heartbeats per unit of time, typically expressed as beats per minute (bpm).