CRL Master Key Systems & Key Control 3

Question 1

What does 'progressive keying' mean in the context of a master key system?

Accepted Answer

A hierarchy where each higher-level key operates all locks that subordinate keys operate

Answer

A system where key access levels increase automatically over time based on seniority

Answer

Gradually replacing all existing keys with a new generation of keys

Answer

A system that adds new lock positions to the hierarchy each calendar year

Question 2

What is the purpose of a 'control key' in a removable interchangeable core lock system?

Accepted Answer

To physically remove and insert the lock core for fast re-keying

Answer

To control which personnel are authorized to duplicate keys

Answer

To override the electronic alarm system tied to the lock

Answer

To set the combination sequence on a combination lock

Question 3

What does 'key bitting' refer to in locksmithing?

Accepted Answer

The cuts or notches made into the key blade that determine which lock it operates

Answer

The specific metal alloy used in manufacturing the key blank

Answer

The way a key is gripped and turned during operation

Answer

The security grade rating assigned to a key by the manufacturer

Question 4

In ALOA master key system notation, what does the abbreviation 'MK' designate?

Accepted Answer

The master key that operates all change key locks within its designated group

Answer

The metal kind or material specification of the key

Answer

The minimum key count required before a system is documented

Answer

The manufacturer's catalog number for a specific key blank

Question 5

What is a 'key schedule' in the context of a master key system?

Accepted Answer

A comprehensive document listing all locks, bitting codes, and which keys operate each lock

Answer

A timetable specifying when certain keys may be used to access an area

Answer

The manufacturer's production timeline for fabricating new key blanks

Answer

A maintenance calendar for scheduling annual key inspection and replacement

Question 6

When a locksmith specifies locks are 'keyed to differ' (KD), what does this mean?

Accepted Answer

Each lock has a unique bitting so no two locks in the system share the same key

Answer

Each lock uses a key from a different manufacturer's product line

Answer

The locks differ in physical appearance but are all operated by the same master key

Answer

Each lock is assigned a different security rating based on its location

Question 7

Which security principle is MOST critical when deciding who receives a master key?

Accepted Answer

Issuing master keys only to personnel who genuinely require broad access

Answer

Ensuring the master key is a distinctive color so it is easily recognized

Answer

Making at least three duplicates of every master key for backup redundancy

Answer

Storing master keys in each authorized employee's personal desk drawer