Podcast
Questions and Answers
What is the function of a DSLAM in a DSL network?
What is the function of a DSLAM in a DSL network?
- Connect wireless devices to the central office
- Transmit voice over DSL phone line to the telephone network
- Transmit data over DSL phone line to the Internet (correct)
- Control the data distribution in a cable network
Which access network technology provides asymmetric transmission rates?
Which access network technology provides asymmetric transmission rates?
- Cable network (correct)
- Wireless access point
- Fiber optic cable
- DSL
What is the purpose of a cable modem termination system (CMTS) in an HFC network?
What is the purpose of a cable modem termination system (CMTS) in an HFC network?
- Provide high-speed point-to-point transmission
- Manage data and TV transmission in the access network (correct)
- Control wireless LANs within buildings
- Transmit voice data over coaxial cables
Which wireless technology is typically used for wide-area wireless access?
Which wireless technology is typically used for wide-area wireless access?
Which physical media has two concentric copper conductors?
Which physical media has two concentric copper conductors?
What is a characteristic of fiber optic cables?
What is a characteristic of fiber optic cables?
In a DSL network, where does voice data over DSL phone lines go?
In a DSL network, where does voice data over DSL phone lines go?
Which device combines wireless access, routing, firewall, and wired Ethernet capabilities?
Which device combines wireless access, routing, firewall, and wired Ethernet capabilities?
What is the purpose of an Ethernet switch in an enterprise access network?
What is the purpose of an Ethernet switch in an enterprise access network?
Study Notes
Network Structure
- The Internet is a network of networks that connect millions of computing devices (hosts) such as PCs, laptops, mobile devices, and smartphones.
- These devices are connected through access networks, links, and physical media (wired and wireless) to the global Internet.
Network Edge
- The network edge consists of end systems (hosts), access networks, and links.
- End systems can be clients, servers, and other devices that run network applications.
- Servers are often located in data centers.
Network Core
- The network core consists of interconnected routers that forward packets of data.
- The network core is a network of networks, where multiple ISPs (Internet Service Providers) are interconnected.
Communication
- Communication occurs through wireless and wired links, including fiber, copper, radio, and satellite transmission.
- Transmission rates are measured in bandwidth.
Protocols
- Protocols are the set of rules that govern data communication over the Internet.
- Examples of protocols include TCP, IP, HTTP, and 802.11.
- Protocols define the format and order of message transmission and reception, as well as the actions taken on message transmission and receipt.
Internet Services
- The Internet provides services to applications, including Web, VoIP, email, games, e-commerce, and social networks.
- The Internet provides a programming interface to applications, allowing them to connect to the Internet and exchange data.
Security
- The Internet is vulnerable to security threats, and security protocols are necessary to protect data transmission.
History of the Internet
- The Internet has a rich history, with its development influenced by various organizations and individuals.
RFC and IETF
- RFC (Request for Comments) is a series of documents that define the Internet standards.
- IETF (Internet Engineering Task Force) is an organization that oversees the development of Internet standards.
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Description
Test your knowledge on network edge, access networks, physical media, network core, packet switching, circuit switching, Internet structure, network performance, security, protocol layers, and service models based on Chapter 1 of a networking textbook.
