Graphic 184.108.40.206 Determine w/c devices are for core, distrib., and access
Graphic 220.127.116.11 Only physical & data link is changed ATM – asynchronous transfer mode HDLC – high level data link control – used instead of clock in RT to RT comm before
Graphic 18.104.22.168 If space permits add graphics 22.214.171.124 & 126.96.36.199 (if forced to make a choice between the 2 graphic pick 188.8.131.52) PSTN devices – multiplexer (time division and frequency division multiplexing) used in switches
Graphic 184.108.40.206 Ppp- rt to rt
Graphic 220.127.116.11 Circuit-switching for telephone Packet-switching for computers (SMS and email) We can’t use packet-switching for telephone calls because it divides packets We can use circuit-switching for transmitting packets Alternative graphic can be found at the following URL (not necessary to use – just a thought): http://www.cisco.com/image/jpg/en/us/guest/products/ps6438/c1244/cdccont_0900aecd802c2010_0900aecd802c2010-08.jpg graphic 18.104.22.168 Delays (latency) and variability of delay (jitter) are greater in packet-switched than in circuit-switched networks. This is because the links are shared, and packets must be entirely received at one switch before moving to the next.
Graphic 22.214.171.124 Broadband has modulation for transmission to diff. channels Leased line uses dedicated line Telephone lines use analog communication
Graphics 126.96.36.199 & 188.8.131.52
The objective stated above does not make sense to me. Reword the above objective as follows: List factors to consider when selecting a WAN connection Graphic 184.108.40.206