Modems provide a bridge between the analog and digital worlds, offering digital systems the ability to communicate over older transmission technologies. In this video, 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 an 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 the computer and allowing users…
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The Certified Information System Security Professional (CISSP) certification is an important component of any security professional's resume, and is a requirement for many top jobs. In this course, prepare for the fourth domain of the exam: Communications and Network Security. Instructor and cybersecurity expert Mike Chapple goes over TCP/IP networking, network security devices, and secure network design. Mike also includes coverage of specialized networking, network attacks, wireless networking, and more. The CISSP exam domains can be found here.
- How IP addresses are assigned and managed
- Multilayer protocols
- VPNs and VPN concentrators
- Designing secure networks
- Firewall management techniques
- Maintaining network availability
- Software defined networking (SDN)
- Port isolation
- Network attacks
- How Wi-Fi networks function
- WPA, WPS, and propagation attacks
- Host-based network security control
Skill Level Advanced
Insights from a Cybersecurity Professionalwith Mike Chapple32m 15s Intermediate
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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