ISC2 · CISSP
Network models and protocols
CISSP · Lesson 16 of 34 · 1:57:26
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In this lesson
Prepare for the ISC2 CISSP exam, on the 2027 outline. In this lesson: the OSI and TCP/IP models, TCP and UDP, IPv4 and IPv6, unicast, broadcast, multicast, and anycast, IPsec, SSH, and TLS, multilayer and converged protocols (iSCSI, VoIP, InfiniBand over Ethernet, Compute Express Link), and transport architecture and performance. Includes three original practice questions.
Preview the topics
- A DNS service uses the same IP address on servers in several countries, and each user reaches the nearest one. Which delivery method is this?
- Calls between hospitals sound choppy, although the bandwidth is sufficient, because packet delays vary a lot. Which metric is the problem?
- Which IPsec component provides confidentiality, by encrypting the payload?