CCIE系列认证

单选题What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations?()A immediately after receiving the first packet on the shared tree for a given (S,G)B after receiving over 1 kb/s traffic onthe sh

题目
单选题
What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations?()
A

immediately after receiving the first packet on the shared tree for a given (S,G)

B

after receiving over 1 kb/s traffic onthe shared tree for a given (S,G)

C

10 seconds after receiving the first packet on the shared tree for a given (S,G)

D

30 seconds after receiving the first packet on the shared tree for a given (S,G)

E

after receiving over 10 kb/s traffic onthe shared tree for a given (S,G)

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相似问题和答案

第1题:

If XYZ LTD needs to upgrade the Cisco IOS Software of a Cisco Router, Where is the best place to download the upgrade image file from?()

  • A、The best option is to download it from the Cisco TAC website
  • B、The best option is to download it from the Cisco.Com Software support site
  • C、The best option is to download it form the Cisco Advanced Services website
  • D、The best option is to download it from the TFTP site on Cisco.com

正确答案:B

第2题:

What type of services are provided by the Cisco IOS gateways in a VoIP network with Cisco CallManager functionality? ()

  • A、Cisco IOS gateways provide services such as address translation and network access control for the devices on the networl
  • B、Cisco IOS gateways provide services such as bandwidth management and accounting
  • C、Cisco IOS gateways provide media termination and signal translation between the public switched telephone network (PSTN) and IP networks
  • D、Cisco IOS gateways provide zone management for all registered endpoints in the network

正确答案:C

第3题:

Refer to the exhibit. For what two reasons has the router loaded its IOS image from the location that is shown? ()

A.Router1 has specific boot system command that instruct it to load IOS from TFTP server.

B.Router1 is acting as a TFTP server for other routers.

C.Router1 cannot locate a valid IOS image in flash memory.

D.Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server.

E.Cisco routers will first attempt to load a image from TFTP for management purposes.


参考答案:A, C

第4题:

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations?()

  • A、immediately after receiving the first packet on the shared tree for a given (S,G)
  • B、after receiving over 1 kb/s traffic onthe shared tree for a given (S,G)
  • C、10 seconds after receiving the first packet on the shared tree for a given (S,G)
  • D、30 seconds after receiving the first packet on the shared tree for a given (S,G)
  • E、after receiving over 10 kb/s traffic onthe shared tree for a given (S,G)

正确答案:A

第5题:

What are two security features of the Cisco Secure Router 500 Series? ()

  • A、Cisco Intrusion Prevention System
  • B、Cisco IOS Software Firewall
  • C、Cisco IOS Easy VPN
  • D、Cisco Unified Wireless Networking
  • E、Cisco ASA Hardware Firewall

正确答案:A,B

第6题:

Which of the following is true about the Cisco IOS-IPS functionality? ()

  • A、 The signatures available are built into the IOS code.
  • B、 Toupdate signatures youneed to install a new IOS image
  • C、 To activate new signatures you download a new Signature DefiitionFile (SDF) from Cisco’s web site
  • D、 Loading and enabling selected IPS signatures is user configurable
  • E、 Cisco IOS onlyprovides Intrusion Detection functionality
  • F、 Cisco IOS-IPS requires a network module installed in your router running sensor software

正确答案:C,D

第7题:

What is a requirement to enable Cisco IOS IPS with 5.x signature?()

  • A、disable Zone-Based Firewall as the two features are not compatible
  • B、disable Cisco Express Forwarding as the two features are not compatible
  • C、generate a certificate and export on Cisco.com to receive a signature update
  • D、import the public RSA key from the Cisco IPS team that allows the router to verify that a signatureupdate (which was signed by this key) comes from Cisco

正确答案:D

第8题:

Which two of these statements correctly describe classic PIM-SM?()

  • A、The IOS default is for a last-hop router to trigger a switch to the shortest path tree as soon as a new source is detected on the shared tree.
  • B、The IOS default is for every one of the routers on the shared tree to trigger a switch to the shortest path tree as soon as a new source is detected on the shared tree.
  • C、The default behavior of switching to the shortest path tree as soon as a new source is detected on the shared tree can be disabled by setting the value in the ip pim spt-threshold command to "infinity."
  • D、The default behavior of switching to the shortest path tree as soon as a new source is detected on the shared tree can be disabled by setting the value in the ip pim spt-threshold command to "zero."

正确答案:A,C

第9题:

What tasks can only be performed in the default or admin VDC?()

  • A、 EPLD upgrade, IOS ISSU, FCoE feature enablement, CoPP configuration, and rolling back a checkpoint
  • B、 EPLD upgrade, Cisco IOS ISSU, FCoE feature enablement, CoPP configuration, and ACL capture enablement
  • C、 EPLD upgrade, Cisco IOS ISSU, FCoE feature enablement, CoPP configuration and SNMP configuration
  • D、 EPLD upgrade, Cisco IOS ISSU, FCoE feature enablement, CoPP configuration, and write erase

正确答案:B

第10题:

Which three of the following basic network services are provided by the Cisco IOS?()

  • A、Defines the network topology
  • B、Access to network resources
  • C、Routing and switching functions
  • D、Content Filtering
  • E、Intrusion Detection

正确答案:A,B,C

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