var quiz = {
	questions : [
		{
			text : 'Block algorithms can work in different modes, depending upon how they are going to be used. If Katie is using DES to encrypt data being transferred between a terminal and a server, what mode should she use?',
			img : 'http://media.techtarget.com/WhatIs/images/spacer.gif',
			responses : [
				'CFB <br>',
				'CBC',
				'CTT',
				'OFB'
			],
			answer : 0,
			score : 1,
			expandedAnswer : 'The cipher feedback (CFB) mode is used when DES needs to emulate a stream cipher. When a terminal and a server communicate, they use an asynchronous channel. This means that individual characters need to be encrypted, instead of blocks of data. The CFB mode was developed specifically to encrypt individual characters at a time.',
			moreInfo : ''
		},
		{
			text : 'Which of the following is an incorrect statement?',
			img : 'http://media.techtarget.com/WhatIs/images/spacer.gif',
			responses : [
				'Diffusion reduces the redundancy of values in the resulting ciphertext and helps reduce the frequency of analysis attacks.',
				'Confusion is usually carried out through substitution.',
				'Diffusion is usually carried out through transposition.',
				'Confusion is not used today, but diffusion is used in almost every algorithm today. <br>'
			],
			answer : 3,
			score : 1,
			expandedAnswer : 'The goal of confusion and diffusion in cryptography is to provide more randomness to the process of encryption and reduce the success of several attacks, including frequency analysis. One example of confusion is substitution, where the relationship between the plaintext and ciphertext is obscured. One example of diffusion is transposition, where the redundancy of a plaintext message is spread out through the ciphertext. Both are used in algorithms today.',
			moreInfo : ''
		},
		{
			text : 'Authentication Header (AH) Protocol within the IPsec protocol suite provides data integrity and system authentication.  Which of the following is incorrect?',
			img : 'http://media.techtarget.com/WhatIs/images/spacer.gif',
			responses : [
				'Replay protection is provided through the use of sequence numbers.',
				'Integrity is provided through the use of ICV.',
				'Data origin is provided through the use of MAC.',
				'Data integrity, system authentication and confidentiality are all provided with the AH protocol. <br>'
			],
			answer : 3,
			score : 1,
			expandedAnswer : 'AH provides data integrity and system authentication only. The Encapsulating Security Payload (ESP) protocol provides confidentiality; not the AH protocol.',
			moreInfo : ''
		},
		{
			text : 'Which of the following is not a characteristic of IPsec?',
			img : 'http://media.techtarget.com/WhatIs/images/spacer.gif',
			responses : [
				'Developed because IPv4 has no security mechanisms.',
				'Sets up a secure channel between computers instead of applications.',
				'Can provide host-to-host, host-to-subnet and subnet-to-subnet connections.',
				'Application layer security is integrated. <br>'
			],
			answer : 3,
			score : 1,
			expandedAnswer : 'Application layer security is not a characteristic of IPsec. IPsec works at the network layer and not the layers above it, which would be the application, presentation, session and transport layers.',
			moreInfo : ''
		},
		{
			text : 'HTTP Secure (HTTPS) is HTTP running over SSL. This means that HTTP works at the ______ level and SSL works at the _______ layer. ',
			img : 'http://media.techtarget.com/WhatIs/images/spacer.gif',
			responses : [
				'Application, Transport <br>',
				'Transport, Application',
				'Public, Transport',
				'Application, Public'
			],
			answer : 0,
			score : 1,
			expandedAnswer : 'The layers are in the correct order to fill in the blanks properly. HTTP works at the application layer of a network stack and SSL works at the transport layer.',
			moreInfo : ''
		}
	]
};