var quiz = { questions : [ { text : 'In a LAN, which of the following terms best equates to the term VLAN?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'Collision domain', 'Broadcast domain
', 'Subnet domain', 'Single switch', 'Trunk' ], answer : 1, score : 1, expandedAnswer : '', moreInfo : 'Check out the definition of a VLAN.' }, { text : 'Which of the following facts determines how often a nonroot bridge or switch sends an 802.1d STP Hello BPDU message?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'The Hello timer as configured on that switch.', 'The Hello timer as configured on the root switch.
', 'It is always every two seconds.', 'The switch reacts to BPDUs received from the root by sending another BPDU two seconds after receiving the root BPDU.' ], answer : 1, score : 1, expandedAnswer : 'Nonroot switches forward Hellos received from the root; the root sends these Hellos based on the root\'s configured Hello timer.', moreInfo : 'Learn more about the IEEE 802 Standard in this Fast Reference.' }, { text : 'Which of the following commands correctly configures a static route?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'ip route 10.1.3.0 255.255.255.0 10.1.130.253
', 'ip route 10.1.3.0 serial 0', 'ip route 10.1.3.0/24 10.1.130.253', 'ip route 10.1.3.0/24 serial 0' ], answer : 0, score : 1, expandedAnswer : 'The correct syntax lists a subnet number, then a subnet mask in dotted decimal form, and then either an outgoing interface or a next-hop IP address.', moreInfo : 'Learn how to verify the IP routing table in this tip.' }, { text : 'What does the acronym VLSM stand for?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'Variable-length subnet mask
', 'Very long subnet mask', 'Vociferous longitudinal subnet mask', 'Vector-length subnet mask', 'Vector loop subnet mask' ], answer : 0, score : 1, expandedAnswer : 'Note that sometimes VLSM stands for variable-length subnet masking, which refers to the process of using different masks in the same classful network, whereas variable-length subnet mask refers to the subnet masks themselves.', moreInfo : 'Learn how to use VLSM to formulate a scalable IP addressing plan.' }, { text : 'Which of the following fields can be compared using a named extended IP ACL but not a numbered extended IP ACL?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'Protocol', 'Source IP address', 'Destination IP address', 'TOS byte', 'None of the other answers are correct.
' ], answer : 4, score : 1, expandedAnswer : 'Named extended IP ACLs can match the exact same set of fields as can numbered extended IP ACLs.', moreInfo : 'Learn how to verify the CEF Forwarding Information Base table.' }, { text : 'Which of the following summarized subnets represent routes that could have been created for CIDR\'s goal to reduce the size of Internet routing tables?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ '10.0.0.0 255.255.255.0', '10.1.0.0 255.255.0.0', '200.1.1.0 255.255.255.0', '200.1.0.0 255.255.0.0
' ], answer : 3, score : 1, expandedAnswer : 'CIDR\'s original intent was to allow the summarization of multiple A, B and C networks to reduce the size of Internet routing tables. Of the answers, only 200.1.0.0.255.255.0.0 summarizes multiple networks.', moreInfo : 'Read about configuring spare networks in terms of CIDR addressing in this expert answer.' }, { text : 'Which of the following IPv4-to-IPv6 transition methods allows an IPv4-only host to communicate with an IPv6-only host?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'Dual-stack', '6to4 tunneling', 'ISATAP tunneling', 'NAT-PT
' ], answer : 3, score : 1, expandedAnswer : 'Network Address Translation-Protocol Translation (NAT-PT) translates between IPv4 and IPv6, and vice versa. The two tunneling methods allow IPv6 hosts to communicate with other IPv6 hosts, sending the packets through an IPv4 network. Dual-stack allows a host or router to concurrently support both protocols.', moreInfo : 'Check out our Learning Guide on preparing a network for IPv6 migration.' }, { text : 'Which of the following statements describes part of the process of how a LAN switch decides to forward a frame destined for a broadcast MAC address?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'It compares the unicast destination address to the bridging, or MAC address, table.', 'It compares the unicast source address to the bridging, or MAC address, table.', 'It forwards the frame out all interfaces in the same VLAN except for the incoming interface.
', 'It compares the destination IP address to the destination MAC address.', 'It compares the frame\'s incoming interface to the source MAC entry in the MAC address table.' ], answer : 2, score : 1, expandedAnswer : 'A switch floods broadcast frames, multicast frames (if no multicast optimizations are enabled), and unknown unicast destination frames (frames whose destination MAC address is not in the MAC address table).', moreInfo : 'Learn more about LAN administration at our topics page.' }, { text : 'Which of the following is a useful command on some Microsoft OSs for discovering a host\'s current IP address and mask?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'tracert.', 'ipconfig /all.
', 'arp -a.', 'ipconfig /displaydns.' ], answer : 1, score : 1, expandedAnswer : '', moreInfo : 'Learn other useful IP addressing tips at our Learning Guide.' }, { text : 'Which of the following are not considered to be desirable security goals for a site-to-site VPN?', img : 'http://media.techtarget.com/WhatIs/images/spacer.gif', responses : [ 'Message integrity checks', 'Privacy (encryption)', 'Antivirus
', 'Authentication' ], answer : 2, score : 1, expandedAnswer : 'Antivirus software is an importance security function, but it is not a function provided by the VPN itself.', moreInfo : 'For more information on VPNs, check out our FAQ guide with expert Lisa Phifer.' } ] };