Modems provide a bridge between the analog and digital worlds, offering digital systems the ability to communicate over older transmission technologies. Learn about the types of modems that are used in different environments and the security considerations surrounding the use of these devices.
- [Instructor] Modems provide a bridge between…the analog and digital worlds…offering digital systems the ability…to communicate over older analog transmission technologies.…The word modem is an abbreviated form of two words…that describe the functions that a modem performs.…Modulator and demodulator.…A modem converts a signal from digital form…to an analog form such as audio, electrical impulses,…or whatever is required by the transmission media.…
This is called modulation.…On the other end of the connection…a modem converts that analog transmission…back to digital form,…a process called demodulation.…The earliest modems were used to connect computers…to telephone lines that were designed…to carry audio signals.…The device shown here,…known as acoustic coupler,…converted signals from a computer to sound,…literally allowing computers to speak to each other…over telephone lines.…This technology quickly matured a little bit,…getting rid of the need to attach…a telephone handset to a computer,…and allowing users to directly plug…
Learn about communication and networking best practices, including TCP/IP networking, network security devices, and secure network design and management. Instructor and cybersecurity expert Mike Chapple also includes coverage of converged protocols, network encryption, and wireless networking. You can find Mike's companion study books for this series at the Sybex test prep site and review the complete CISSP Body of Knowledge at https://www.isc2.org/cissp-domains/default.aspx.
- IP addressing
- Switches and routers
- Content distribution networks
- Designing secure networks
- Specialized networking
- Managing secure networks
- Working with virtualized networks like SDNs
- Detecting and preventing network attaches
- Transport encryption
- Wireless networking
- Host security
Skill Level Advanced
CISSP Cert Prep: 2 Asset Securitywith Mike Chapple58m 11s Advanced
1. TCP/IP Networking
2. Network Security Devices
3. Designing Secure Networks
4. Specialized Networking
5. Secure Network Management
6. Virtualized Networks
Port isolation1m 47s
7. Network Attacks
8. Transport Encryption
9. Wireless Networking
10. Host Security
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