The concept of limiting the routes that can be taken between a
workstation and a computer resource on a network is called:

A.
Path limitation

B.
A trusted path

C.
An enforced path

D.
A security perimeter

Explanation:
Individuals are authorized access to resources on a network through
specific paths and the enforced path prohibits the user from accessing a
resource through a different route than is authorized to that particular
user. This prevents the individual from having unauthorized access to
sensitive information in areas off limits to that individual. Examples of
controls to implement an enforced path include establishing virtual
private networks (VPNs) for specific groups within an organization,
using firewalls with access control lists, restricting user menu options,
and providing specific phone numbers or dedicated lines for remote
access. Answer a is a distracter. Answer c, security perimeter, refers to
the boundary where security controls are in effect to protect assets.
This is a general definition and can apply to physical and technical
(logical) access controls. In physical security, a fence may define the
security perimeter. In technical access control, a security perimeter can
be defined in terms of a Trusted Computing Base (TCB). A TCB is the
total combination of protection mechanisms within a computer system.
These mechanisms include the firmware, hardware, and software
that enforce the system security policy. The security perimeter is the
boundary that separates the TCB from the remainder of the system. In
answer “A trusted path” a trusted path is a path that exists to permit the user to access
the TCB without being compromised by other processes or users.