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多选题You examine the port statistics on a Cisco Catalyst switch and notice an excessive number offrames are being dropped. Which of the following are possible reasons for the drops？（）AUnknown destination MAC addressBBad cablingCMAC forwarding table is fullD
题目
Unknown destination MAC address
Bad cabling
MAC forwarding table is full
Port configured for half duplex
Port configured for full duplex
Network congestion
相似问题和答案
第1题：
A. Configure the switch to be in VTP client mode.
B. Configure the switch to be in VTP domaint mode.
C. Configure the switch to be in VTP transparent mode.
D. Configure the switch to be in VTPv2.
第2题：
When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）
- A、by snooping the CoS marking on the incoming frames
- B、by using RTP hello messages between the switch port and the Cisco IP Phone
- C、by using CDP
- D、by using DHCP snooping
- E、by snooping the incoming 802.1Q VLAN tag
正确答案:C
第3题：
As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）
A. using DHCP snooping
B. snooping the incoming 802.1Q VLAN tag
C. using CDP
D. snooping the CoS marking on the incoming frames
第4题：
You are at a client site. It is a medium-sized business and needs a Cisco Catalyst switch that offers high availability and security. What type of Catalyst switches would you recommend？（）
- A、 Catalyst 2960 Series
- B、 Catalyst 3750 Series
- C、 Catalyst 4900 Series
- D、 Catalyst 6500 Series
正确答案:A
第5题：
A new Catalyst switch is connected to an existing switch using a crossover cable. As a result of this, what would the switch port link lights display?（）
- A、The switch port link lights will be off on both switches indicating the ports are not connected.
- B、The switch port link light will be off on one switch indicating that STP has disabled the port.
- C、The switch port link lights will flash amber indicating an error.
- D、The switch port link lights will be green indicating normal operation.
正确答案:D
第6题：
After enabling port security on a Cisco Catalyst switch， what is the default action when the configuredmaximum of allowed MAC addresses value is exceeded？（）
- A、The port’s violation mode is set to restrict
- B、The port is shut down
- C、The MAC address table is cleared and the new MAC address is entered into the table
- D、The port remains enabled， but bandwidth is throttled until old MAC addresses are aged out
正确答案:B
第7题：
While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate?（）
- A、The port is experiencing errors.
- B、The port is administratively disabled.
- C、The port is blocked by spanning tree.
- D、The port has an active link with normal traffic activity.
正确答案:A
第8题：
You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method.When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）
A. Switch(config)# switchport trunk encapsulation isl
B. Switch(config)# switchport trunk encapsulation ietf
C. Switch(config-if)# switchport trunk encapsulation isl
D. Switch(config-if)# switchport trunk encapsulation ietf
E. Switch(config-if)# switchport trunk encapsulation dot1q
第9题：
You examine the port statistics on a Cisco Catalyst switch and notice an excessive number offrames are being dropped. Which of the following are possible reasons for the drops？（）
- A、Unknown destination MAC address
- B、Bad cabling
- C、MAC forwarding table is full
- D、Port configured for half duplex
- E、Port configured for full duplex
- F、Network congestion
正确答案:B,F
第10题：
While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。
- A、The port is experiencing errors
- B、The port is administratively disabled
- C、The port is blocked by spanning tree
- D、The port has an active link with normal traffic activity
正确答案:A