思科认证考试

To which of these does IP multicast send packets?（）A、a single hostB、a subset of hostsC、all hosts sequentiallyD、all hosts simultaneously

题目

To which of these does IP multicast send packets?（）

  • A、a single host
  • B、a subset of hosts
  • C、all hosts sequentially
  • D、all hosts simultaneously
参考答案和解析
正确答案:B
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相似问题和答案

第1题：

One of your customers wishes to use the NAS to perform DHCP functions and does not currently have a Layer 3 gateway in its production network. Which gateway mode is appropriate for this customer?()

A.Virtual Gateway

B.Real-IP Gateway

C.NAT Gateway

D.IP-IP Gateway


参考答案：B

第2题：

Refer to the exhibit. Which three statements correctly describe Network Device A?()

A.With a network wide mask of 255.255.255.128, each interface does not require an IP address.

B.With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.

C.With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.

D.With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.

E.With a network wide mask of 255.255.254.0, each interface does not require an IP address.


参考答案：B, D

第3题：

How many bytes does an IP adress consist of?


正确答案：
 

第4题：

Refer to the exhibit. Which rule does the DHCP server use when there is an IP address conflict?（）

  • A、The address is removed from the pool until the conflict is resolved.
  • B、The address remains in the pool until the conflict is resolved.
  • C、Only the IP detected by Gratuitous ARP is removed from the pool.
  • D、Only the IP detected by Ping is removed from the pool.
  • E、The IP will be shown, even after the conflict is resolved.

正确答案:A

第5题：

One of your customers wishes to use the NAS to perform DHCP functions and does not currently have a Layer 3 gateway in its production network. Which gateway mode is appropriate for this customer?（）

  • A、Virtual Gateway
  • B、Real-IP Gateway
  • C、NAT Gateway
  • D、IP-IP Gateway

正确答案:B

第6题：

To which of these does IP multicast send packets?()

A. a single host

B. a subset of hosts

C. all hosts sequentially

D. all hosts simultaneously


参考答案：B

第7题：

Which is the result of enabling IP Source Guard on an untrusted switch port that does not have DHCP snooping enabled？（）

  • A、DHCP requests will be switched in the software， which may result in lengthy response times.
  • B、The switch will run out of ACL hardware resources.
  • C、All DHCP requests will pass through the switch untested.
  • D、The DHCP server reply will be dropped and the client will not be able to obtain an IP address.

正确答案:D

第8题：

Which service does the ERX Edge Router support with a virtual router?()

A.voice over IP

B.wholesale services

C.IP quality of service

D.SNMP management


参考答案：B

第9题：

Which two benefits does Cisco Unified CallConnector provide to customer communications?（）

  • A、status of coworkers before placing a call
  • B、Connect feature in Communications Manager Express
  • C、IM contacts imported to an IP Phone
  • D、click-to-dial access only for WebEx meetings
  • E、Screen Pops for incoming calls

正确答案:A,E

第10题：

Which three IP multicast group concepts are true?（）

  • A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
  • B、A router does not have to be a member of a multicast group to recei ve multicast data.
  • C、A router must be a member of a multicast group to send to the group.
  • D、A router does not have to be a member of a multicast group to send to the group.
  • E、If a packet is sent to a multicast group address, all members of the multic ast group will receive it.
  • F、A router must be a member of a multicast group to receive multicast data.

正确答案:D,E,F

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