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Communications and Network
information, such as assessing solutions and comparing and contrasting alternative solutions. ○ Biba, Star Model, and Bell-LaPadula are only a few of the security models mentioned in 3.2. This time around, certain models were listed in the exam’s prior edition. Biba and Bell-LaPadula have long been mentioned in study guides and books, but not as much attention has been paid to Star Model. ○ The acronyms SaaS, IaaS, and PaaS are introduced in section 3.5. Other types of systems and services made possible by the cloud include microservices, containerized systems, serverless architectures, and embedded and high-performance computing architectures, as well as cloud-enabled edge computing and virtualized cloud infrastructure. Pay attention to the particular security issues that arise because of the use of these technologies. ○ In Section 3.6, quantum cryptography is introduced as a method. The term “digital certificates” is also introduced. The last test included certificates under “Apply Cryptography,” however this is the first time the word “digital certificate” has been used in a formal sense. Despite this, the fundamentals haven’t changed. When it comes to high availability, the concept of “power” is first introduced in 3.9.
Communication and Network Security
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● 4.1 includes multiple changes: ■ Assess and implement” has been added to the title. ■ It is almost guaranteed that IPv4, IPv6, and IPsec will be included in test questions. ■ In a new area, you’ll find information about security protocols like Kerberos, SSL/TLS, SFTP, SSH, and IPSec, which you should be familiar with. ■ In the section on convergent protocols, new examples have been included, including FCoE, iSCSI, and VOIP. ■ It has been enhanced to incorporate VXLAN, encapsulation, and SD-WAN under the micro-segmentation portion. In the section on wireless networks, new examples are called out: Li-Fi, Wi-Fi, Zigbee, and satellites. Wireless networks (4G and 5G), as well as content distribution systems (CDNs), have been updated (CDNs). What
