Accessing the WAN – Chapter ppt

... 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 ... fiber in the trunks: –Reduces the number of amplifiers –Thin and lightweight—takes less space –Covers longer distances –Induces less or virtually no noise –Less lo...

Ngày tải lên: 05/07/2014, 03:20

... as Frame Relay. –However, there are times when the benefits outweigh the cost of the leased line. The dedicated capacity removes latency or jitter between the endpoints. –Constant availability ... modem. The modem modulates the binary data into an analog signal at the source and demodulates the analog signal to binary data at the destination. The physical charact...

Ngày tải lên: 05/07/2014, 03:20

... the remote DCE, which decodes the signal back into a sequence of bits. The remote DCE then signals this sequence to the remote DTE.  The connection between the two DCE devices is the WAN ... request requires no authentication, then PPP progresses to the next level. –If an incoming PPP request requires authentication, then it can be authenticated using either the...

Ngày tải lên: 05/07/2014, 03:20

... LANs –A router on each LAN is the DTE. –A serial connection, such as a T1/E1 leased line, connects the router to the Frame Relay switch of the carrier at the nearest POP for the carrier. The ... Step 3. Setting the Bandwidth –Use the bandwidth command to set the bandwidth of the serial interface. Specify bandwidth in kb/s. The EIGRP and OSPF routing protocols use...

Ngày tải lên: 05/07/2014, 03:20

... information –Bots within the organization –Theft of customer or employee data –Abuse of wireless network –System penetration –Financial fraud –Password sniffing –Key logging –Website defacement ... –Insider abuse of network access –Virus –Mobile device theft –Phishing where an organization is fraudulently represented as the sender –Instant messaging misuse –Denial of...

Ngày tải lên: 05/07/2014, 03:20

... If the packet is permitted by the tests, it is then processed for routing. –Outbound ACLs - Incoming packets are routed to the outbound interface, and then they are processed through the ... first filters on the source address, then on the port and protocol of the source. It then filters on the destination address, then on the port and protocol of the destination, and...

Ngày tải lên: 05/07/2014, 03:20

... reassignment of the IP address to another client later, or for the client to get another assignment if the client moves to another subnet. Clients may also renew leases and keep the same IP address. ... clients. The problem is that the network clients typically are not on the same subnet as those servers. Therefore, the clients must locate the servers to receive services...

Ngày tải lên: 05/07/2014, 03:20

... with the hubs of the stars linked to form the region. •interconnect the regions to form the core of the WAN. – Regions could be geographic, connecting between three and 10 areas, and the hub ... for the external system.  Step 3. Narrow the scope –Determine if the problem is at the core, distribution, or access layer of the network.  Step 4. Gather symptom...

Ngày tải lên: 05/07/2014, 03:20

... FastEthernet0 C 192.168.1.0/24 is directly connected, Serial1 S* 0.0.0.0/0 is directly connected, Serial1 RouterB# Understanding The Routing Table Part 1: The Routing Table Structure Part 2: The ... default routing behavior, whether classful or classless, is simple. The command to enable classless routing behavior is: RouterB(config)#ip classless RouterB(config)# The command to di...

Ngày tải lên: 18/03/2014, 14:20

... Concepts  Define the three phases of PPP session establishment © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Version 4.0 Access Control Lists Accessing the WAN – Chapter 5 © ... Describe how the Cisco Enterprise Composite Model (ECNM) provides integrated services over an Enterprise network.  Describe the key WAN technology concepts.  Identify...

Ngày tải lên: 03/04/2014, 13:52