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多选题Which two methods can be used to prevent or reduce RFI from colocated directional antennas（）AAlternate polarization between colocated antennasBCross-polarize antennas between endpointsCInstall an RF-shielded box around the antennasDIncrease the distanc
题目
Alternate polarization between colocated antennas
Cross-polarize antennas between endpoints
Install an RF-shielded box around the antennas
Increase the distance between the antennas
参考答案和解析
相似问题和答案
第1题：
Which two statements about voice VLANs are correct？（）
- A、Voice VLANs eliminate the need for QoS configuration
- B、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markings
- C、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the network
- D、Voice VLANs can be configured to forward existing CoS priorities or override them
- E、Voice VLANs are mainly used between access layer switches and distribution layer switches
- F、Voice VLANs can be configured on Layer 2 ports only
正确答案:D,F
第2题：
Which two features prevent routing loops between the OSPF sites of a customer when the sites aremultihomed or a backdoor link is used between the sites？ （）
- A、sham link
- B、down bit
- C、virtual link
- D、Site of Origin
- E、domain tag
正确答案:B,E
第3题：
A. from a zone to the router itself
B. from a zone to the same zone
C. from a zone to a different zone
D. from one interface to another interface
第4题：
Which two Cisco antennas provide better isolation from RF sources that might be located behindthe antennas？（）
- A、AIR-ANT3213
- B、AIR-ANT2465P-R
- C、AIR-ANT1949
- D、AIR-ANT5160V-R
正确答案:B,C
第5题：
Which three statements are true about implementing wireless LANs in the Company network using Cisco devices？（）
- A、 Antenna power is a relative value reference to dBi.
- B、 LWAPP allows encrypted communications between lightweight access points and WLAN controllers.
- C、 Characteristics of antennas are directionality， gain， and polarization.
- D、 Power over Ethernet （PoE） is only available when a WLAN controller is integrated into the network.
- E、 The WLAN solution Engine （WLSE） is used to control lightweight access points.
- F、 One of the advantages of the lightweight WLAN solution is that the devices act indepently.
正确答案:A,B,C
第6题：
In which two locations in an enterprise network can an IPS sensor be placed?（）
- A、bridging VLANs on two switches
- B、bridging two VLANs on one switch
- C、between two Layer 2 devices withtrunking
- D、between two Layer 2 devices withouttrunking
- E、between a Layer 2 device and a Layer 3 device withtrunking
正确答案:C,D
第7题：
Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?（）
- A、ping address
- B、tracert address
- C、traceroute address
- D、arp address
正确答案:A
第8题：
A.tracert address
B.ping address
C.arp address
D.traceroute address
第9题：
Which two methods can be used to prevent or reduce RFI from colocated directional antennas（）
- A、Alternate polarization between colocated antennas
- B、Cross-polarize antennas between endpoints
- C、Install an RF-shielded box around the antennas
- D、Increase the distance between the antennas
正确答案:A,D
第10题：
Which command can be used from a PC to verfy the connectivity between host that connect through path?（）
- A、tracert address
- B、ping address
- C、arp address
- D、traceroute address
正确答案:A