characteristic（）

A . It sends data in clear text format. B . It is no longer supported on Cisco network devices. C . It is more secure than SSH D . It requires an enterprise license in order to be implemented. E . It requires that the destination device be configured to support Telnet connections.

A . classful routing protocol B . variable-length subnet masks C . broadcast addressing D . manual route summarization E . uses SPF algorithm to compute path

A . they are used internally within fcoe to map a vsan to a specifc vlan B . they pin traffic fro a specific compute node mezzanine card to aspecific up link port C . an iplink port for the adapter is chosen automatically if no pin group is set

A .  RSVP itself provides bandwidth and delay guarantees. B .  For RSVP to be end-to-end， all devices must support RSVP. C .  RSVP reservations are maintained by a centralized reservations server. D .  An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.

A . VTP messages are sent out all switch-switch connections. B . VTP L2 messages are communicated to neighbors using CDP. C . VTP manages addition， deletion， and renaming of VLANs 1 to 4094. D . VTP pruning restricts flooded traffic， increasing available bandwidth. E . VTP V2 can only be used in a domain consisting of V2 capable switches. F . VTP V2 performs consistency checks on all sources of VLAN information.

A . The design supports multiple server subnets. B . An end-user sees the IP address of the real server. C . SLB routes between the outside and inside subnets. D . The source or destination MAC address is rewritten, but the IP addresses left alone. E . SLB acts as a "bump in the wire" between servers and upstream firewall or Layer 3 devices.

A . service guarantee B . traffic that is divided into classes C . not scalable to large implementations D . QoS mechanisms that are used without prior signaling E . applications that signal their particular QoS and bandwidth requirement

A .  It helps verify end-to-end path availability. B .  It provides traffic rerouting in case of disaster. C .  HSRP， GLBP， and VRRP can be clients of GSS. D .  BGP must be the routing protocol between the distributed data centers. E .  DNS responsiveness is improved by providing centralized domain management.

A . They are known as fabric routing. B . They cannot span multiple switches. C . Their connectivity is supported by Layer 2. D . They enable devices in different VSAN fabrics to communicate. E . They require that multiple switch fabrics be merged before they can function.

A . It can take on HSRP, VRRP, and GLBP as clients. B . It provides automatic inbound route optimization. C . Path selection may be based on delay, loss, or jitter. D . The border router makes decisions about which outbound path to use. E . Automatic load distribution is provided for multiple connections.

A . RSVP itself provides bandwidth and delay guarantees. B . For RSVP to be end-to-end, all devices must support RSVP. C . RSVP reservations are maintained by a centralized reservations server. D . An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.

A . It helps verify end-to-end path availability. B . It provides traffic rerouting in case of disaster. C . HSRP, GLBP, and VRRP can be clients of GSS. D . BGP must be the routing protocol between the distributed data centers. E . DNS responsiveness is improved by providing centralized domain management.

A . An IPv6 address is 128 bits long. B . An IPv6 header contains the header checksum field. C . An IPv6 header is 20 bits long. D . An IPv6 header contains the next header field. E . IPv6 route rs send RA messages. F . An IPv6 header contains the protocol field.

A .  It can take on HSRP， VRRP， and GLBP as clients. B .  It provides automatic inbound route optimization. C .  Path selection may be based on delay， loss， or jitter. D .  The border router makes decisions about which outbound path to use. E .  Automatic load distribution is provided for multiple connections.

A . classful routing protocol B . variable-length subnet masks C . broadcast addressing D . manual route summarization E . uses SPF algorithm to compute path

A.shareholders who are mutual agents B.direct management by the shareholders (owners) C.its inability to own property D.shareholders who have limited liability

A．Twitter"s ads are actually hidden among ordinary tweets. B．Twitter prefers to use big glossy images to attract people"s attention. C．Twitter"s ads are usually sponsored by big companies like Starbucks D．After three years" trial, Twitter has decided to change its ads style.