PCNSE PRACTICE TESTS - RELIABLE PCNSE TEST LABS

PCNSE Practice Tests - Reliable PCNSE Test Labs

PCNSE Practice Tests - Reliable PCNSE Test Labs

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Palo Alto Networks Certified Security Engineer (PCNSE) certification is a popular and highly sought-after certification in the field of cybersecurity. The PCNSE exam is designed to validate the knowledge and skills of security engineers who work with the Palo Alto Networks Next-Generation Firewall. The latest version of the exam, PCNSE PAN-OS 10.0, was released in 2020 and is based on the latest version of the Palo Alto Networks operating system.

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Palo Alto Networks Certified Network Security Engineer Exam Sample Questions (Q131-Q136):

NEW QUESTION # 131
Which two settings can be configured only locally on the firewall and not pushed from a Panorama template or template stack? (Choose two)

  • A. Master Key
  • B. HA1 IP Address
  • C. Network Interface Type
  • D. Zone Protection Profile

Answer: A,B

Explanation:
Explanation
https://docs.paloaltonetworks.com/panorama/7-1/panorama-admin/manage-firewalls/template-capabilities-and-ex


NEW QUESTION # 132
After switching to a different WAN connection, users have reported that various websites will not load, and timeouts are occurring. The web servers work fine from other locations.
The firewall engineer discovers that some return traffic from these web servers is not reaching the users behind the firewall. The engineer later concludes that the maximum transmission unit (MTU) on an upstream router interface is set to 1400 bytes.
The engineer reviews the following CLI output for ethernet1/1.

Which setting should be modified on ethernet1/1 to remedy this problem?

  • A. Enable the Ignore IPv4 Don't Fragment (DF) setting.
  • B. Adjust the TCP maximum segment size (MSS) value. *
  • C. Change the subnet mask from /23 to /24.
  • D. Lower the interface MTU value below 1500.

Answer: B

Explanation:
Explanation
The engineer should adjust the TCP maximum segment size (MSS) value on ethernet1/1 to remedy this problem. This is because the MTU on an upstream router interface is set to 1400 bytes, which is causing the return traffic from the web servers to not reach the users behind the firewall. By adjusting the TCP MSS value, the engineer can ensure that the return traffic is able to reach the users without any issues.
The TCP MSS is the maximum amount of data that can be transmitted in a single TCP segment, excluding the TCP and IP headers. The TCP MSS is usually derived from the MTU of the underlying network, which is the maximum packet size that can be transmitted without fragmentation. For example, if the MTU is 1500 bytes, which is the default value for ethernet interfaces, then the TCP MSS is 1460 bytes (1500 - 20 bytes for IP header - 20 bytes for TCP header). However, if there are intermediate devices or networks that have a lower MTU than the end-to-end path, then the TCP MSS may need to be adjusted accordingly to avoid packet loss or fragmentation1.
In this case, the firewall has an MTU of 1500 bytes on ethernet1/1, which is connected to a WAN link.
However, an upstream router has an MTU of 1400 bytes on its interface, which means that any packet larger than 1400 bytes will be either dropped or fragmented by the router. This can cause problems for the return traffic from the web servers, which may have a TCP MSS of 1460 bytes or higher, depending on their MTU settings. If these packets have the Don't Fragment (DF) bit set in their IP header, which is common for TCP packets, then they will be dropped by the router and never reach the firewall or the users behind it. If they do not have the DF bit set, then they will be fragmented by the router and reassembled by the firewall, which can cause performance degradation and overhead2.
To avoid these problems, the engineer should adjust the TCP MSS value on ethernet1/1 to match or be lower than the MTU of the upstream router. This can be done by using the CLI command set network interface ethernet ethernet1/1 tcp-mss <value> , where <value> is an integer between 64 and 15003. For example, if the engineer sets the TCP MSS value to 1360 bytes (1400 - 20 - 20), then this will ensure that any TCP packet sent or received by ethernet1/1 will not exceed 1400 bytes in total size, and thus will not be dropped or fragmented by the router. This will allow the return traffic from the web servers to reach the users behind the firewall without any issues4.
References: TCP Maximum Segment Size (MSS), Configure Session Settings, TCP MSS Adjustments, PCNSE Study Guide (page 59)


NEW QUESTION # 133
A company has recently migrated their branch office's PA-220S to a centralized Panoram a. This Panorama manages a number of PA-7000 Series and PA-5200 Series devices All device group and template configuration is managed solely within Panorama They notice that commit times have drastically increased for the PA-220S after the migration What can they do to reduce commit times?

  • A. Use "export or push device config bundle" to ensure that the firewall is integrated with the Panorama config.
  • B. Perform a device group push using the "merge with device candidate config" option
  • C. Update the apps and threat version using device-deployment
  • D. Disable "Share Unused Address and Service Objects with Devices" in Panorama Settings.

Answer: D

Explanation:
https://docs.paloaltonetworks.com/panorama/9-1/panorama-admin/manage-firewalls/manage-device-groups/manage-unused-shared-objects
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000Cm1CCAS


NEW QUESTION # 134
Which Zone Pair and Rule Type will allow a successful connection for a user on the Internet zone to a web
server hosted on the DMZ zone? The web server is reachable using a Destination NAT policy in the Palo
Alto Networks firewall.
A:

B:

C:

D:

  • A. Option D
  • B. Option A
  • C. Option B
  • D. Option C

Answer: C


NEW QUESTION # 135
A logging infrastructure may need to handle more than 10,000 logs per second.
Which two options support a dedicated log collector function? (Choose two)

  • A. M-100 with Panorama installed
  • B. Panorama virtual appliance on ESX(i) only
  • C. M-100
  • D. M-500

Answer: C,D


NEW QUESTION # 136
......

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