Which OSI layer is considered the media access control layer?

If an optical disc will not eject using the eject button or through the operating system, a user can use a(n) _______ to insert into the emergency eject hole

Fill in the blank(s) with correct word

The security measure used to reduce vulnerabilities for MOST network devices that require regular application and monitoring is:

A. patch management B. security limitations C. documentation D. social engineering