2 cissp ® Official Study Guide Eighth Edition

Know the standard network topologies.
These are ring, bus, star, and mesh.
Know the common network devices.
Common network devices are firewalls, routers, 
hubs, bridges, modems, repeaters, switches, gateways, and proxies.
Understand the different types of firewalls.
There are several types of firewalls: static 
packet filtering, application-level gateway, circuit-level gateway, stateful inspection, deep-
packet inspection, and next-gen.
Know the protocol services used to connect to LAN and WAN communication technologies.
These are Frame Relay, SMDS, X.25, ATM, HSSI, SDLC, HDLC, and ISDN.
Written Lab
1.
Name the layers of the OSI model and their numbers from top to bottom.
2.
Name three problems with cabling and the methods to counteract those issues.
3.
What are the various technologies employed by wireless devices to maximize their use 
of the available radio frequencies?
4.
Discuss methods used to secure 802.11 wireless networking.
5.
Name the LAN shared media access technologies and examples of their use, if known.

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Review Questions 
517
Review Questions
1.
What is layer 4 of the OSI model?
A.
Presentation
B.
Network
C.
Data Link
D.
Transport
2.
What is encapsulation?
A.
Changing the source and destination addresses of a packet
B.
Adding a header and footer to data as it moves down the OSI stack
C.
Verifying a person’s identity
D.
Protecting evidence until it has been properly collected
3.
Which OSI model layer manages communications in simplex, half-duplex, and full-duplex 
modes?