Refer to the exhibit. The command spanning-tree guard root is configured on interface Gi0/0 on both switch S2 and S5. The global configuration command spanning-tree uplinkfast has been configured on both switch S2 and S5. The link between switch S4 and S5 fails.
 Will Host A be able to reach Host B？ （）

单项选择题On an Aironet card， LED 0 and LED 1 are blinking alternately.  What does this indicate？ （）

A.The Aironet card is in power save mode.
B.The Aironet card is looking for a network association.
C.The Aironet card is joined to a network， but there is no network activity.
D.The Aironet card is joined to a network， and there is network activity.

多项选择题WhichtwostatementsaretrueabouttheconfigurationofvoiceVLANs？（）

A.Static secure MAC addresses can be configured in conjunction with voice VLANs.
B.PortFast is automatically enabled when voice VLANs are configured.
C.PortFast must be manually configured when voice VLANs are configured.
D.Voice VLANs are typically configured on uplink ports.
E.Voice VLANs are typically configured on access ports.

单项选择题Refer to the exhibit.  Which statement is true about the display of the command show pagp 1 neighbor command？（）

A.STP packets are sent out the Gi0/1 interface only.
B.STP packets are sent out both the Gi0/1 and Gi0/2 interfaces.
C.CDP packets are sent out the Gi0/1 interface only. 
D.CDP packets are sent out the Gi0/2 interface only.

单项选择题Whatdoesthecommandudldresetaccomplish？（）

A.allows an UDLD port to automatically reset when it has been shutdown
B.resets all UDLD enabled ports that have been shutdown
C.removes all UDLD configurations from interfaces that were globally enabled
D.removes all UDLD configurations from interfaces that were enabled per-port

单项选择题Refer to the exhibit. When a profile is configured in the Aironet Desktop Utility，  which security option permits the configuration of host-based Extensible Authentication Protocol （EAP）？（）

A.WPA/WPA2/CCKM
B.WPA/WPA2 Passphrase
C.802.1x
D.Pre-Shared Key （Static WEP）