Transcript Document 730283

CS 350
Chapter-5
Conn. devices
Description
Hub
Connect multiple network segments, doesn’t
recognize frame, broadcast to all ports
Repeater
(hubs)
Modem
(POT/DSL/Cabl
e)
NIC
Reamplify/regenerate signals and forward to all
ports
Transceiver
Allow 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
Connect two similar network segments, keep traffic
separated, break up collision domain, software
based
Bridge
Digital data analog carrier  digital data the for
receiver
Provide the physical/electrical/electronic connection
Conn. devices
Description
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 AP
Wireless hub/switch
Basic
router(layer 3
switch)
Connect many, sometimes disparate, network
segments, packet switching/filtering, patch selection
Basic firewall
Blackbox/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
Conn. devices
Description
DNS server
Domains, record types, DNS query
IDS/IPS
Intrusion 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 server
Assign 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 …
How many broadcast domains and
collision domains?