1. CS 350 Chapter-5

2. Conn. devicesDescription HubConnect multiple network segments, doesn’t recognize frame, broadcast to all ports Repeater (hubs) Reamplify/regenerate signals and forward to all ports Modem (POT/DSL/Cabl e) Digital data  analog carrier  digital data the for receiver NICProvide the physical/electrical/electronic connection TransceiverAllow NIC/networking device to connect to a different type of media. Ether (100Base-TX) Switch + fiber transceiver to each port + fiber-optic cable+ fiber (100Base-FX)switch BridgeConnect two similar network segments, keep traffic separated, break up collision domain, software based Basic switch (layer 2 switch; Layer3=router) Connect multiple network segments, recognize frame, know MAC addresses and direct to correct port, otherwise flood to all ports w/o receiving port

3. Conn. devicesDescription Multilayer Switch Switching and routing. Packet switching by using application-specific integrated circuit (ASIC) hardware; router uses a microprocessor Content Switch Load balancing, encryption/decryption Wireless APWireless hub/switch Basic router(layer 3 switch) Connect many, sometimes disparate, network segments, packet switching/filtering, patch selection Basic firewallBlackbox/software on a server/router between Internet (public side) and your network(private side) Or, Internet– firewall—DMZ (demilitarized zone, like web and email server)—firewall– internal network

4. Conn. devicesDescription DNS serverDomains, record types, DNS query IDS/IPSIntrusion detection or prevention system Bandwidth Shaper Channel Service Unit/Data Service Unit CSU/DSU, connect transmission medium like a T1 line to a router DHCP serverAssign IP address to hosts using bootP protocol (port68, port 67). Client gets a IP address, a subnet mask, a lease time, the IP address of the DHCP server, default gateway, DNS server IP address/ the domain name …

5. How many broadcast domains and collision domains?