71

A well-formed XML document must have:?

a Two root element
b No root element
c Exactly one root element
d Only numeric tag
Correct: (C) Exactly one root element
72

Which is a valid self-closing XML element??

a <student>
b </student>
c <student />
d <student><student>
Correct: (C) <student />
73

Which statement is correct??

a HTML is a programming language
b XML is always used only fro web page styling
c HTML structure web content; XML structure data
d HTML and XML have identical rule
Correct: (C) HTML structure web content; XML structure data
74

Which XML element name is invalid because of its format??

a Student_name
b student1
c student-name
d student name
Correct: (D) student name
75

Which element typically contains visible page content??

a <head>
b <body>
c <title>
d <meta>
Correct: (B) <body>
76

Which tag represents a thematic break, often shown as a horizontal line??

a <br>
b <line>
c <hr>
d <h6>
Correct: (C) <hr>
77

Which network typically covers a school computer lab??

a WAN
b MAN
c LAN
d GAN
Correct: (C) LAN
78

Which device forwards packets between different networks??

a Hub
b Router
c Repeater
d Keyboard
Correct: (B) Router
79

Which address is typically 48 bits in Ethernet??

a IPv4
b IPv6
c MAC address
d Port number
Correct: (C) MAC address
80

What is the main function of DNS??

a Encrypt files
b Resolve domain names
c Assign file permission
d Compress images
Correct: (B) Resolve domain names