... Cisco Public ITE 1Chapter 6 12 Cisco Thai Nguyen Networking Academy WAN Physical Layer Standards TheWAN physical layer also describes the interface between the DTE and the DCE. –EIA/TIA-232 ... rights reserved. Cisco Public ITE 1Chapter 6 43 Cisco Thai Nguyen Networking Academy Choosing a WAN Link Connection What is the purpose of the WAN? –Do you want to connect local branches, ... ITE 1Chapter 6 42 Cisco Thai Nguyen Networking Academy Internet Connection Options: Metro Ethernet Metro Ethernet is a rapidly maturing networking technology that broadens Ethernet to the...
... reserved. Cisco Public ITE 1Chapter 6 28 The Network Security Wheel The security policy is the four steps of Security Wheel. Step 1: Secure –Secure the network by applying the security policy ... Cisco Public ITE 1Chapter 6 47 Configuring SSH Security To enable SSH, the following parameters must be configured: 1. Hostname 2. Domain name 3. Asymmetrical keys 4. Local authentication ... ITE 1Chapter 6 35 Routers are Targets Because routers provide gateways to other networks, they are obvious targets. Here are some examples of various security problems: –Compromising the...
... speed of 1. 544 Mb/s for transmission over T1 lines. –While it is common to refer to a 1. 544 Mb/s transmission as a T1, it is more correct to refer to it as DS1. –T-carrier refers to the bundling ... ITE 1Chapter 6 11 TDM Examples - T-Carrier Hierarchy DS0: The original unit used in multiplexing telephone calls is 64 kb/s, which represents one phone call. T1: In North America, 24 ... –Data is encapsulated by the sending router. The frame is sent on a physical medium to the WAN. –There are various ways to traverse the WAN, The receiving router uses the same communications...
... Frame Relay Step 1. Setting the IP Address on the Interface –R1 has been assigned 10 .1. 1 .1/ 24, –R2 has been assigned 10 .1. 1.2/ 24. Step 2. Configuring Encapsulation The encapsulation frame-relay ... DLCI. Use the show frame-relay map command to display the current map entries and information about the connections. The output shows the following information: 10 . 14 0 .1. 1 is the IP address ... Public ITE 1Chapter 6 11 Cost Benefits of Multiple VCs More savings arise as the capacity of the access line is based on the average bandwidth requirement of the VCs, rather than on the maximum...
... only (for example, SDSL and IDSL types). The data rate that DSL service can provide depends on the distance between the subscriber and the CO. The shorter the distance: the higher the bandwidth ... connectivity through the residence. – Since the POTS splitter separates the ADSL and voice signals at the NID, there is usually only one ADSL outlet available in the house. – The user can install ... 1Chapter 6 41 Broadband Wireless: Satellite Internet The figure illustrates a two-way satellite Internet system. Upload speeds are about one-tenth of the download speed, which is in the...
... affecting the success of communication include:– The quality of the pathway between the sender and the recipient– The number of times the message has to change form – The number of times the message ... Supporting the Way We Live The Global Communityã The creation of online communities for the exchange of ideas and information has the potential to increase productivity opportunities across the globe.ã ... readressed– The number of other messages being transmitted simultaneously on the Học viện mạng Bách khoa - Website: www.bkacad.com– The number of other messages being transmitted simultaneously on the...