XML uses markups to specify document’s logical structure and is mainly for supporting system data integration.A) TrueB) False 2. XML documents can use any tag names and still be validA) TrueB) False 3. DTD is part of XML specification.A) TrueB) False 4. DTD uses XML syntax.A) TrueB) False 5. XML Schema is more expressive than DTD.A) TrueB) False 6. XML Schema uses XML syntax.A) TrueB) False 7. A well-formed XML document is also valid.A) TrueB) False 8. A valid XML document must also be well-formedA) TrueB) False 9. SAX takes less computer memory than DOM when it parses an XML documentA) TrueB) False 10. XPath expressions are for connecting different XML elementsA) TrueB) False 11. XSLT is for replacing CSS.A) TrueB) False 12. XML technology is mainly forA) Integration of heterogeneous information systems B) Integration of data of heterogeneous information systems C) Presentation of business dataD) Specifying style rules for data presentation 13. Entity names are for definingA) Aliases for long strings B) Specifying business dataC) Specifying special characters that cannot be used directly in an XML document D) HTTP request 14. Which of the following is not required for an XML document to be well-formed?A) There can only be one root element B) There is no partial element overlappingC) Attribute values are delimited by single or double quotesD) The document only uses a pre-defined set of tag names 15. If a program uses XML to specify its configuration parameters, which of the following technologies should be used to read its XML configuration file?A) SAX B) DOMC) XSLTD) XPath 16. Which of the following technologies should be used to define entity names?A) DTD B) XML SchemaC) XSLTD) XSLT 17. A DTD document declares that an element has type PCDATAA) This type elements can only contain plain text B) This type elements can contain nested elementsC) This type elements can contain text and entity references D) This type elements cannot have contents 18. XML namespaces are normally in form of a URLA) There must be a web page as the destination of a namespace URL B) There must be a web site as the destination of a namespace URLC) There must be a web service as the destination of a namespace URLD) It is not necessary to have a web page or web site as the destination of a namespace URL 19. An XML Schema document does not specify the minOccurs value of a declared element. Its instance documents should have at least how many occurrences of this element corresponding to this element declaration?A) 0B) 1C) 2D) 3 20. Which node set is denoted by XPath expression “//@id”?A) All “id” elements at the current level B) All “id” attributes at the current level C) All “id” elements at the current level as well as its nested lower levelsD) All “id” attributes at the current level as well as its nested lower levels

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200 Words minimum for each questions1)Multiplexers are used to help companies minimize their network communications costs. How do they work and what types of equipment are needed?2)From our week 4 electronic reserve readings, Paganini and Mallada (2009) describe the ability of routers using TCP/IP to split traffic to reduce congestion on a network. How does this work and how can it be improved to possibly reduce business costs for communication?