GB0-372-ENU 무료 덤프문제 온라인 액세스

In the network shown in the figure, the interconnection lines between RT1, RT2, RT3 and RT4 are all 1000M links except for the shared Ethernet part which is a 10M link. OSPF protocol is run to make the routes interoperable. The four routers all run PIMSM protocol, and the RP is 1.1.1.1. RT1 and RT2 are connected to receivers on their downstream interfaces, and IGMP is enabled on the corresponding interfaces. Then, when the receiver sends a group join request, which of the following routers have (*, G) entries? (Multiple choice)

• A.RT1
• B.RT4
• C.RT3
• D.RT2

The network topology is shown in the figure. STP is enabled on SWA and SWD. which of the following statements about the changes in the status of SWA and SWD ports are correct?

• A.The port role of SWD's EO/1 port changes in the Listening state from a designated port to a root port.
• B.The EO/2 port of SWD changes its port role in the Learning state, from a designated port to an Alternate port.
• C.Both SWA's EO/1 and SWD's EO/1 need to go through the ForwardDelay delay of the Listening and Learning states to enter the Forwarding state.
• D.If the bridge priority of SWD is changed to 0, port EO/2 of SWA will directly enter the Blocking state without the need for the Forward Delay.

The figure shows the networking application of RRPP. The customer LAN switches SWA, SWB, SWC, and SWD form the RRPP ring main ring 1, switches SWB, SWC, and SWE form sub-ring 2, and switches SWB, SWC, and SWF form sub-ring 3. If switch SWE is the master node of sub-ring 2, SWF is the master node of sub-ring 3, and switch SWB is the edge node of sub-ring 2 and sub-ring 3, in order to eliminate the defect of broadcast storm under specific conditions of RRPP dual-homing networking, which of the following can be known from the above information?

• A.If the link between switch SWA and switch SWB is down, and the link between switch SWB and switch SWC is down, the edge port on switch SWB will be blocked.
• B.If the link between switch SWA and switch SWB is down, and the link between switch SWA and switch SWD is down, the edge port on switch SWB will be blocked.
• C.If the link between switch SWB and switch SWC is in Down state, the edge port on switch SWB will be blocked.
• D.If the link between switch SWA and switch SWD is down, the edge port on switch SWB will be blocked.

The following command is configured on a device: [sysname] port-security enable Which of the following is an incorrect description of the function and meaning of this configuration?
(Multiple choice)

• A.This configuration enables the port security feature
• B.The purpose of this configuration is to enable the device to learn the legal destination MAC address to achieve network management
• C.The function implemented by this configuration can only control the access of unauthorized devices to the network by detecting the destination MAC address in the data frame.
• D.The function implemented by this configuration can only control the access of unauthorized devices to the network by detecting the source MAC address in the data frame.

When implementing network security management measures in a campus network, which of the following are network access control technologies or measures deployed to prevent illegal access to network resources? (Multiple choice)

• A.Add IAS device (Ilegal Access System)
• B.Deploy endpoint access defense
• C.Add a firewall
• D.Portal Authentication