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Re: My CCENT Notes
Basic Security Cisco's Adaptive Security Appliance (ASA)- Security device that provides many features. Firewall- A device that filters packets based on a security policy. Proxy Servers- Servers that cache web document for faster access and it also blocks access to certain web pages. Intrusion Detection System (IDS)- A… -
Re: My CCENT Notes
First I wanted to say great notes. They make for a good second reference to my own notes for the CCENT. I did want to bring this to attention though. Protect and restrict are actually backwards. Protect - Drops the frame and DOES NOT increase the counter. Restrict - Drops the frame and DOES increase the counter. Can be… -
Re: My CCENT Notes
Layer 2 Switching A switch is a layer 2 device that creates collision domains. Each port on a switch is its own collision domain. Microsegmentation- 1 collision domain per port/interface. A bridge is also a layer 2 device and is similar to a switch. Differences: bridge is software base and contains less ports. A switch is… -
Re: My CCENT Notes
Great guide! I've been regularly comparing my notes (I'm using Odom's Second Edition ICND1 Certification Guide) to yours that you post here. Quick question for you: I've noticed you sometimes include some information that I dont see in my book; are you using Odom's newer 3rd edition or Lamele's CCNA book, or something else… -
Re: My CCENT Notes
Cisco's Three layer Hierarchy model Why do we care about cisco's model? Because it is used to design, maintain scalability, reliable and cost effective networks. Core Layer: The core of the network. Its job is to switch traffic as fast as possible with reliability. Dont: Dont do anything to slow down the network such as… -
Re: My CCENT Notes
HUBS and CSMACD Hubs are layer 1 devices. All a hub is a multi-port repeater. Hubs are 1 collision domain and 1 broadcast domain no matter how many host are connected to it. How does it work? When a host sends or receives information the hub will send that information to all host plugged into the hub except the port where… -
Re: My CCENT Notes
WLAN (Wireless) WAP (wireless access points) are used to create wireless networks. WAP's are half duplex and act like hubs. Layer 2 devices. There are two main types of WLAN: 1) Ad-hoc- No AP is needed. Devices communicate directly together. (IBSS A.K.A independent basic service set). 2) Infrastructure- WAPs are used to… -
Re: My CCENT Notes
WAN (Wide Area Networks) WANs connects multiple networks that span a large radius. In a nut shell the easiest way to differentiate a WAN from a WLAN or LAN is that you typically lease a WAN. KEY TERMS CPE (Customer Premise Equipment)- Equipment owned and located by the subscriber's side. Demarcation Point (A.K.A Demarc…
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