Paloalto Networks Updated PCCET Exam Questions and Answers by eben

2G/2.5G: 2G connectivity remains a prevalent and viable IoT connectivity option due

to the low cost of 2G modules, relatively long battery life, and large installed base of

2G sensors and M2M applications.

○ 3G: IoT devices with 3G modules use either Wideband Code Division Multiple Access

(W-CDMA) or Evolved High Speed Packet Access (HSPA+ and Advanced HSPA+) to

achieve data transfer rates of 384Kbps to 168Mbps.

○ 4G/Long-Term Evolution (LTE): 4G/LTE networks enable real-time IoT use cases, such

as autonomous vehicles, with 4G LTE Advanced Pro delivering speeds in excess of

3Gbps and less than 2 milliseconds of latency.

○ 5G: 5G cellular technology provides significant enhancements compared to 4G/LTE

networks and is backed by ultra-low latency, massive connectivity and scalability for

IoT devices, more efficient use of the licensed spectrum, and network slicing for

application traffic prioritization.

A stateless firewall is a network firewall that primarily filters traffic based on source and destination IP address, as well as port numbers and protocols. A stateless firewall does not keep track of the state or context of network connections, and only inspects packet headers. A stateless firewall is faster and simpler than a stateful firewall, but it is less secure and flexible. A stateless firewall cannot block complex attacks or inspect packet contents for malicious payloads. References: What Is a Packet Filtering Firewall? - Palo Alto Networks, Common IP Filtering Techniques – APNIC, What is IP filtering? - Secure Network Traffic Management

A next-generation firewall (NGFW) is a security component that can detect command-and-control (C2) traffic sent from multiple endpoints within a corporate data center. A NGFW is a network device that combines traditional firewall capabilities with advanced features such as application awareness, intrusion prevention, threat intelligence, and cloud-based analysis. A NGFW can identify and block C2 traffic by inspecting the application layer protocols, signatures, and behaviors of the network traffic, as well as correlating the traffic with external sources of threat intelligence. A NGFW can also leverage inline cloud analysis to detect and prevent zero-day C2 threats in real-time. A NGFW can provide granular visibility and control over the network traffic, as well as generate alerts and reports on the C2 activity. References:

• Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET)
• Command and Control, Tactic TA0011 - Enterprise | MITRE ATT&CK®
• Advanced Threat Prevention: Inline Cloud Analysis - Palo Alto Networks

Routing Information Protocol (RIP) is an example of a distance-vector routing protocol that uses hop count as its routing metric. To prevent routing loops, in which packets effectively get stuck bouncing between various router nodes, RIP implements a hop limit of 15, which limits the size of networks that RIP can support. After a data packet crosses 15 router nodes (hops) between a source and a destination, the destination is considered unreachable.