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what is logical link controlone of two sublayers of the data link layer of osi reference model as explained by the ieee 802 standard this sublayer is
what is the difference between routable and non- routable protocolsroutable protocols can work with a router and can be used to make huge
what is difference between baseband and broadband transmissionin a baseband transmission the whole bandwidth of the cable is consumed by a one signal
what is mesh networka network in which there are many network links among computers to provide multiple paths for data to
what are the important topologies for networksbus topology in this every computer is directly linked to primary network cable in a single
what are major types of networks and explainserver-based network give centralized control of network resources and depend on server computers to give
what is the difference between tftp and ftp application layer protocols the trivial file transfer protocol tftp allows a local host to obtain files
what is difference between arp and rarpthe address resolution protocol arp is used to associate the 32 bit ip address with the 48 bit physical
what are the data units at dissimilar layers of the tcp ip protocol suitethe data unit formed at the application layer is called a message at the
what is the different type of networking internetworking devices1 repeater also known as a regenerator it is an electronic device that operates only
describe domain constraintsdomain constraints contain entity integrity and referential integrity the domain is a set of values that might be assigned
explain the systems development life cyclethis is the traditional method to develop maintain and replace information systems that contains the
explain the differences between structured data and unstructured datastructured data are facts concerning objects and events the most significant
what is olaponline analytical processing olap is a business intelligence bi reporting system olap gives the user with the capability to sum count
what is a dataseta dataset is an in-memory database that is disconnected from any regular database but has all the significant characteristics of a
what disadvantage of odbc does ole db overcomeby breaking the features and the methods of a dbms into com objects ole db characteristic overcomes a
what are the three types of data sources used with odbcan odbc file data source is a file that can be shared between database users an odbc system
what is the difference between sql server 2000 clustered and nonclustered indexeswith a clustered index the data are kept in the bottom level of the
what is the difference between sql server 2000 complete and differential backupsa complete backup makes a copy of the whole database a differential
what is deadlock how can it be avoided how can it be resolved once it occursdeadlock happens when two transactions are each waiting on a resource
explain the difference between optimistic locking and pessimistic lockingoptimistic locking supposes no transaction conflict will occur and deals
why is database redesign necessarydatabase redesign is essential for two reasons first redesign is essential both to fix mistakes made during the
what is a cascading updatereferential integrity constraints needs that foreign key values in one table correspond to primary key values in another if
what is a recursive relationship give an example not used in the texta recursive relationship is a relationship among an entity and itself for
what is the archtetypeinstance patternthe archetypeinstance pattern happens when one entity tracks occurrences of another entity a common example is