Which internet of things (loT) connectivity technology operates on the 2.4GHz and 5GHz bands, as well as all bands between 1 and 6GHz when they become available for 802.11 use. at ranges up to 11 Gbit/s?
802.11ax, also known as Wi-Fi 6, is an internet of things (IoT) connectivity technology that operates on the 2.4GHz and 5GHz bands, as well as all bands between 1 and 6GHz when they become available for 802.11 use, at ranges up to 11 Gbit/s. 802.11ax is designed to improve the performance, efficiency, and capacity of wireless networks, especially in high-density environments such as smart homes, smart cities, and industrial IoT. 802.11ax uses various techniques such as orthogonal frequency division multiple access (OFDMA), multi-user multiple input multiple output (MU-MIMO), target wake time (TWT), and 1024 quadrature amplitude modulation (QAM) to achieve higher data rates, lower latency, longer battery life, and reduced interference for IoT devices. Reference:
* Wi-Fi 6 (802.11ax) - Palo Alto Networks
* What is Wi-Fi 6? | Wi-Fi 6 Features and Benefits | Cisco
* What is Wi-Fi 6 (802.11ax)? - Definition from WhatIs.com
Layer 4 of the TCP/IP Model corresponds to which three Layer(s) of the OSI Model? (Choose three.)
Layer 4 of the TCP/IP model is the transport layer, which is responsible for providing reliable and efficient data transmission between hosts. The transport layer can use different protocols, such as TCP or UDP, depending on the requirements of the application. The transport layer also performs functions such as segmentation, acknowledgement, flow control, and error recovery. 1
The transport layer of the TCP/IP model corresponds to three layers of the OSI model: the transport layer, the session layer, and the presentation layer. The session layer of the OSI model manages the establishment, maintenance, and termination of sessions between applications. The session layer also provides services such as synchronization, dialogue control, and security. The presentation layer of the OSI model handles the representation, encoding, and formatting of data for the application layer. The presentation layer also performs functions such as compression, encryption, and translation. 23
* 1: TCP/IP Model - GeeksforGeeks
* 2: Transport Layer | Layer 4 | The OSI-Model
* 3: Transport Layer Explanation -- Layer 4 of the OSI Model
What are two disadvantages of Static Rout ng? (Choose two.)
Static routing is a form of routing that occurs when a router uses a manually-configured routing entry, rather than information from dynamic routing traffic 1. Static routing has some advantages, such as simplicity, low overhead, and full control, but it also has some disadvantages, such as:
* Manual reconfiguration: Static routes require manual effort to configure and maintain. This can be time-consuming and error-prone, especially in large networks with many routes. If there is a change in the network topology or a link failure, the static routes need to be updated manually by the network administrator 23.
* Single point of failure: Static routing is not fault tolerant. This means that if the path used by the static route stops working, the traffic will not be rerouted automatically. The network will be unreachable until the failure is repaired or the static route is changed manually. Dynamic routing, on the other hand, can adapt to network changes and find alternative paths 23.
At which layer of the OSI model are routing protocols defined?
Routing protocols are defined at the network layer (Layer 3) of the OSI model. The network layer is responsible for routing packets across different networks using logical addresses (IP addresses). Routing protocols are used to exchange routing information between routers and to determine the best path for data delivery. Some examples of routing protocols are BGP, OSPF, RIP, and EIGRP. Palo Alto Networks devices support advanced routing features using the Advanced Routing Engine1. Reference: Advanced Routing - Palo Alto Networks | TechDocs, What Is Layer 7? - Palo Alto Networks, How to Configure Routing Information Protocol (RIP)
Organizations that transmit, process, or store payment-card information must comply with what standard?
PCI DSS stands for Payment Card Industry Data Security Standard, which is a set of requirements intended to ensure that all companies that process, store, or transmit credit card information maintain a secure environment1. The standard is administered by the Payment Card Industry Security Standards Council, and its use is mandated by the major card brands2. PCI DSS covers 12 requirements for compliance, organized into six control objectives, such as building and maintaining a secure network and systems, protecting cardholder data, and implementing strong access control measures3. Reference: Payment Card Industry Security Standards, PCI Security Standards Council -- Protect Payment Data with Industry-driven Security Standards, Training, and Programs, What is PCI Compliance? 12 Requirements & More - Digital Guardian
