chapter 10  a survivable internet solution for a fully distributed network

... and features can be added quickly and easily as they emerge via a software download, rather than having to perform forklift upgrades • Easily deployed at the customer premise with full frontal ... frontal access to interfaces.Can either be wall-mounted or rack-mounted Application Diversity The high-performance LoopStar 722 edge platform can reach across any type of network (SONET/SDH, Optical ... resiliency, automatic failover of prioritized traffic, and by providing diversely routed aggregation groups for additional redundancy and backup • Transports ILEC-quality T1/E1 services over packet networks...

Ngày tải lên: 10/12/2013, 19:15

... Reasons for nulls: – attribute not applicable or invalid – attribute value unknown (may exist) – value known to exist, but unavailable 1.4 Spurious Tuples  Bad designs for a relational database ... 3.6 Normalization of Relations Practical Use of Normal Forms Definitions of Keys and Attributes Participating in Keys First Normal Form Second Normal Form Third Normal Form General Normal Form Definitions ... (For Multiple Keys) BCNF (Boyce-Codd Normal Form) Informal Design Guidelines for Relational Databases (1)  What is relational database design? The grouping of attributes to form "good" relation...

Ngày tải lên: 12/05/2014, 11:55

... that Network Load Balancing provides a greater benefit than round robin DNS entries because Network Load Balancing automatically excludes servers that are unavailable You can enhance the availability ... in all time zones The senior partners have mandated that the legal assistants have Internet access 24hours -a- day, 7-days -a- week What design changes would you make to ensure that the legal assistants ... handling, and baggage tracking Support for a mission-critical Web-based application that allows customers to make reservations and purchase the tickets over the Internet Private network access to all...

Ngày tải lên: 18/10/2013, 18:15

... a RADIUS Solution Enhancing a RADIUS Design for Availability Optimizing a RADIUS Design for Performance Discussion: Enhancing the RADIUS Solution An organization has a geographically distributed ... the authentication and accounting availability in your design, you can: Make certain that all redundant RADIUS servers use the same user account authentication database, thereby ensuring that ... with RADSVR1 and RADSVR2 Specify VPN ports for remote access Authenticate RADIUS clients and servers, and encrypt all data Specify RADSVR1 and RADSRV2 for authentication and accounting Allow...

Ngày tải lên: 22/10/2013, 16:15

... Module 6: NAT as a Solution for Internet Connectivity 19 Enhancing a NAT Design for Availability and Performance LAN Interface Internet NAT Demand-Dial Interface Private Network Dedicate a Computer ... Introducing NAT Designing a Functional NAT Solution Securing a NAT Solution Enhancing a NAT Design for Availability and Performance An organization has a number of sales representatives that work ... point-of-sales application and an inventory control application The applications are Active Directory– aware applications that store the data for the applications in a SQL Server 7.0 database How...

Ngày tải lên: 24/01/2014, 10:20

... communications: Transmission of digital data in a sequential format Several units can communicate over a single cable C SCADA INTERFACE SCADA (Supervisory Control and Automated Data Acquisition) systems are ... more particle size ranges, each a separate data point Most particle counters accommodate analog and discrete inputs, which will create yet another string of data There are status and alarm points, ... of a few of them is provided below: Dynamic Data Exchange (DDE) Dynamic Data Exchange is what the name implies, a constant “exchange” of data between the particle counter software package and a...

Ngày tải lên: 18/06/2014, 19:20

... Miller, K.J and Zachariah, K.P., Cumulative damage laws for fatigue crack initiation and stage I propagation, Journal of Strain Analysis, 12, 262–270, 1977 Miner, M .A. , Cumulative damage in fatigue, ... of damage In particular, a distinction can be made between theories formulated before and after the 1970s The former are based on a more phenomenological approach, the latter on an analytical ... Damage and Damage Parameter The parameter used for the analytical measurement of damage is the percentage ratio of the area (or volume) of the cavities within the elementary cell to its nominal...

Ngày tải lên: 11/08/2014, 21:21

... of applications that can take advantage of multicast transmissions RIP -for- IP version is an example of a protocol that can take advantage of multicast transmissions to update routing information ... if the area can be summarized with a single route Ensure that multiple ABRs for the same area are summarizing the same routes Ensure that all inter-area traffic crosses the backbone area Keep ... information for unicast packets Unlike RIP -for- IP routers, OSPF routers maintain a map of the network in the link state database Updates to the network are reflected in the link state database...

Ngày tải lên: 18/10/2013, 18:15

... data packets to a designated computer - called the gateway on the local area network The gateway forwards data packets to the Internet on behalf of your system It also performs the complementary ... different names for the same location, you may have both a name, called a hostname, and a number, called an IP number, that serve as the address for your machine To translate between these two notations, ... Samba has proven its reliability and high performance in many organizations According to the online survey at http://www.samba.org/pub/samba/survey/ssstats.html, Bank of America is using Samba...

Ngày tải lên: 14/12/2013, 13:15

... information or explanation on optimizing IP performance IP Stack IP Stack Delay and Latency IP MTU Data Data Data Data IP TCP Data Link Link Link IP TCP Data Link Header Trailer Trailer Header ... TCP/IP as a Solution for Networking Discussion: Evaluating TCP/IP Availability and Performance Requirements Slide Objective To evaluate options for enhancing the availability and performance of a ... installation, can influence the performance that you can ultimately achieve In particular, when WAN networks span large distances, the delay through a network becomes a significant factor in any...

Ngày tải lên: 21/12/2013, 05:18

... locations: LocationA, LocationB, and LocationC Links exist between LocationA and LocationB, LocationA and LocationC, and LocationA and the Internet Support for a remote access server at LocationA, ... LocationA, which provides VPN access for the Internet No support on routers for DHCP and BOOTP forwarding A mission-critical Web-based application available on a 24-hours -a- day, 7days -a- week scale ... address and configuration information to enable IP communication The DHCP Server maintains a database that includes available and allocated IP addresses for defined subnets and the client TCP/IP...

Ngày tải lên: 17/01/2014, 08:20

... records For organizations that have a separate private and public namespace, create the subdomain for WINS under the private namespace For organizations that have the same namespace for private and ... Separate Public and Private Namespace You can integrate DNS into the existing namespace of an organization by creating separate public and private namespaces The existing namespace is contained ... local and remote locations can enhance the availability of DNS By adding additional DNS servers at remote locations, DNS availability can be ensured in the event of a wide area network (WAN)...

Ngày tải lên: 17/01/2014, 08:20

... will be able to: Evaluate WINS as a solution for NetBIOS name resolution Evaluate and create a functional design for baseline name resolution Select appropriate strategies to secure a WINS solution ... redundancy and load balancing When you use replication, all servers contain the same WINS database information Timely WINS Database Replication Highly available WINS implementation designs call for timely ... enough available bandwidth to allow any required WINS replication between locations • Servers are available on all subnets in all locations that can act as WINS proxies • Each location has an equipment...

Ngày tải lên: 24/01/2014, 10:20

Ngày tải lên: 26/01/2014, 07:20

... businesses have a distinct advantage over their larger kin A small company can totally replace its computers or upgrade its software faster than a large company and at a proportioned cost A case in ... Software standardization is another frustrating factor in information management An example is a New York–based employee having trouble communicating with a colleague in England The American sends ... equally as valuable That organizational intelligence quotient (IQ) shows up when looking at an organization’s accumulated knowledge Think about how we approach intellectual capital Most organizations...

Ngày tải lên: 26/01/2014, 15:20

... SUMMARY OF FOUNDATION CONCEPTS AND PARADIGMS • Most studies of sublethal effects apply experimental designs appropriate for ANOVA or ANCOVA and not take full advantage of available ecological ... Hartley, Bartlett, Cochran, or Levene tests Usually these tests are done after those for normality because several formally require that the data set be normally distributed Although ANOVA and ... the same variance for all treatments The least powerful tests assume the least, for example, the Wilcoxon rank sum test with a Bonferroni adjustment of Type I error rates Quantal data Transform?...

Ngày tải lên: 18/06/2014, 16:20

... Michigan Department of Natural Resources 1988 Remedial action plan for Saginaw River and Saginaw Bay East Lansing: Michigan Department of Natural Resources, Surface Water Quality Division, Great Lakes ... cropland to derive the average usage of nitrogen fertilizer per acre of cropland Average phosphate application data for all the cropland were based on the USDA National Agricultural Statistical ... potential 10.7 SUMMARY The National Oceanic and Atmospheric Administration (NOAA) Great Lakes Environmental Research Laboratory (GLERL) and Western Michigan University are developing a spatially distributed, ...

Ngày tải lên: 18/06/2014, 16:20