Manage and Operate for Palo Alto Networks Certified Network Security Engineer (PCNSE)

This page covers the Manage and Operate domain of the Palo Alto Networks Certified Network Security Engineer (PCNSE) certification. Master Cybersecurity offers 39 practice questions in this domain, drawn from the same content we use across our timed exam simulations. Below are five sample questions with full answer explanations.

Sample Practice Questions

  1. Question 1

    An administrator has been asked to configure active/passive HA for a pair of Palo Alto Networks NGFWs. The administrator assigns priority 100 to the active firewall. Which priority is correct for the passive firewall?
    1. A. 0
    2. B. 99
    3. C. 1
    4. D. 255
    Explanation

    The correct answer is: D. 255.

    Device priority in PAN-OS high availability works so that the lower numeric value is the higher priority, which is the opposite of the intuition many administrators bring from other products. With the active firewall set to 100, the passive member must therefore hold a value greater than 100, and 255 is the only option that qualifies. The values 0, 1 and 99 are all lower than 100 and would make that device the preferred active member, which combined with preemption enabled would cause it to take over, producing exactly the inverted behaviour the numbers were meant to prevent. The practical habit worth adopting is to leave a wide gap between the two values rather than choosing adjacent numbers, so the intent is obvious to whoever reads the configuration next, and to remember that priority only determines which device is preferred when preemption is enabled; with preemption disabled, whichever device becomes active stays active until it fails.

  2. Question 2

    How does an administrator schedule an Applications and Threats dynamic update while delaying installation of the update for a certain amount of time?
    1. A. Configure the option for "Threshold".
    2. B. Disable automatic updates during weekdays.
    3. C. Automatically "download only" and then install Applications and Threats later, after the administrator approves the update.
    4. D. Automatically "download and install" but with the "disable new applications" option used.
    Explanation

    The correct answer is: A. Configure the option for "Threshold"..

    The Threshold option on a dynamic update schedule tells the firewall to wait a specified period after a content release becomes available before installing it, which is the mechanism for delaying installation by a set amount of time. Palo Alto Networks recommends a non-zero threshold in most environments so that a release has been in circulation before it reaches production, and a separate App-ID threshold allows new application identities to be held back longer than threat content. Disabling automatic updates during weekdays restricts when updates may run but does not introduce a delay measured from the release itself. Downloading only and installing later after approval does produce a delay, but it is a manual gate requiring an administrator to act rather than the scheduled, automatic delay the question describes. Downloading and installing with new applications disabled controls which parts of the content take effect rather than when the installation happens, so it addresses impact rather than timing.

  3. Question 3

    If the firewall has the following link monitoring configuration, what will cause a failover?
    1. A. ethernet1/3 and ethernet1/6 going down
    2. B. ethernet1/3 going down
    3. C. ethernet1/3 or ethernet1/6 going down
    4. D. ethernet1/6 going down
    Explanation

    The correct answer is: A. ethernet1/3 and ethernet1/6 going down.

    Link monitoring is configured with a failure condition at two levels, and both are set to all here. Within the link group, a condition of all means every interface in the group must be down before the group is considered failed, so a single interface losing link leaves the group healthy. At the top level, a condition of all means every link group must have failed before a failover is triggered. With one group containing the two interfaces shown, the practical effect is that both must go down together for the firewall to fail over. The options naming a single interface each would be correct only if the group failure condition were any, which is the setting to reach for when any lost link should trigger failover. The option describing either interface going down likewise describes an any condition. Reading both levels rather than only one is the habit this question rewards, because the group condition and the overall condition combine.

  4. Question 4

    An administrator needs to upgrade a Palo Alto Networks NGFW to the most current version of PAN-OS software. The firewall has internet connectivity through an Ethernet interface, but no internet connectivity from the management interface. The Security policy has the default security rules and a rule that allows all web- browsing traffic from any to any zone. What must the administrator configure so that the PAN-OS software can be upgraded?
    1. A. Security policy rule
    2. B. CRL
    3. C. Service route
    4. D. Scheduler
    Explanation

    The correct answer is: C. Service route.

    The firewall can reach the internet through a data interface but not through its management interface, and a service route is the mechanism that redirects the firewall's own outbound requests to a data interface. Configuring one for Palo Alto Networks services sends the software download out of the interface that has connectivity, which is what allows the upgrade to proceed. The Security policy is not the missing piece here, because a rule already permits web-browsing from any zone to any zone, and in any case policy governs traffic transiting the firewall rather than the routing of traffic it originates. A certificate revocation list is unrelated to retrieving software. A scheduler determines when updates are checked for and installed, so it would automate a download that already works but cannot make one succeed when the request has no viable path. Once the service route is in place, a scheduler is a reasonable addition rather than the fix.

  5. Question 5

    Which menu item enables a firewall administrator to see details about traffic that is currently active through the NGFW?
    1. A. ACC
    2. B. System Logs
    3. C. App Scope
    4. D. Session Browser
    Explanation

    The correct answer is: D. Session Browser.

    The Session Browser lists the sessions currently established through the firewall and lets an administrator filter them by address, port, application, user or zone, which is what makes it the place to look at traffic that is active right now. Being able to see and, where necessary, clear an individual live session is what distinguishes it from every log-based view, since logs describe sessions that have already been recorded rather than connections in progress. The ACC visualises log data over a chosen time range, so it describes what has happened rather than what is happening. System logs record device events such as service starts, HA transitions and update results, which concern the firewall itself rather than transiting traffic. App Scope provides comparative and trend views built on historical log data, useful for spotting change over time but again not a live view of the session table.

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