Which two statements are correct about a policy scheduler?

A policy scheduler is a feature that allows you to specify when a security policy is in effect. You can configure a policy scheduler to start at a specific date and time or start on a recurrent basis, such as daily, weekly, or monthly. A policy scheduler determines the time frame that a security policy is actively evaluated and enforced by the SRX Series device2

A policy scheduler can only be applied to security policies that have the action of permit or reject. A policy scheduler cannot be applied to security policies that have the action of deny. A policy scheduler is not related to the policy-rematch feature, which is used to reevaluate existing sessions when a security policy is modified. A policy scheduler cannot be dynamically activated based on traffic flow volumes2 References:

1: Juniper Security Specialist (JNCIS-SEC) (JN0-334) | Study Guide 3

2: Junos OS Security Configuration Guide | Configuring Policy Schedulers 4