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What is the difference between Peer-to-Peer and Client/Server networks?
Peer-to-peer shares data between clients. Client/server shares data ONLY between the server and individual clients.
Data sharing
What is VPN?
What are some VPN protocols?
-PPTP (Port to Port Tunneling Protocol), widely used by Microsoft.
-L2TP/IPsec (Layer 2 Tunneling Protocol with IPsec), widely used by older Cisco equipment.
-SSTP (Secure Socket Tunneling Protocol), more often used by recent Cisco equipment.
-IKEv2, a pure IPsec protocol.
What is the difference between a VPN Concentrator and a VPN Endpoint?
Concentrators are double-duty VPN and router; Endpoints are strictly VPN.
What's the difference between client-to-site and site-to-site VPN?
Site-to-site connects separate networks; client-to-site connects a single client to a network.
Networks
What type of switch is required to create a VLAN?
A managed switch. (Unmanaged switches have no VLAN capability.)
It's gotta be configured somehow...
What is a trunk port?
Trunk ports communicate all traffic on all VLANs, usually for the purpose of interconnected switches.
What is the purpose of a VLAN?
Splits one broadcast domain into two or more broadcast domains, allowing more than one broadcast domain on a single switch.
What is interVLAN routing?
A virtual router on a higher-end switch, used to interconnect the separate VLANs. Performs like a router in that it routes traffic between the separate VLANs. (Otherwise, a physical router is required.)
Interconnectivity
What is the purpose of a rollover cable?
Used to directly manage a switch or router. One side (switch/router) uses a DB9 serial connection; the other uses an RJ45 connector (which is wired differently from an Ethernet jack).
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