H3C GB0-372-ENU : H3CSE-RS-SW

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H3CSE-RS-SW Sample Questions:

1. Regarding the working principle of IGMP-Snooping, which of the following is correct? (Multiple choice)

A) By listening to IGMPReport messages, IGMP-Snooping adds ports to known multicast groups or creates new multicast forwarding entries
B) Determine the router end by listening to IGMPQuery messages and IGMP-Snooping
C) Layer 2 devices rely on IGMP-sliooping to snoop IGMP messages and maintain multicast address forwarding entries at Layer 2

2. In the switching network shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are sub VLANs of VLAN10, port Ethernet1/0/3 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass; VLAN2~VLAN20 are created on switch SWB, port Ethernet1/0/4 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass. Check the Ethernet 1/0/3 port information on SWA, which of the following is the correct display?

A) [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP PVID: 1 Mdi type: auto Link delay is 0(sec)Port link-type: trunk VLAN passing: 1(default vlan),2-3,10 VLAN permitted: 1(default vlan),2-4094 Trunk port encapsulation: IEEE 802.1q
B) [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0(sec)Port link-type: trunk
VLAN passing: 1(default vlan),2-3
VLAN permitted: 1(default vlan),2-9,11-4094 Trunk port encapsulation: IEEE 802.1q
C) [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0 (sec)Port link-type: trunk
VLAN passing: 1 (default vlan), 2
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
D) [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0 (sec)Port link-type: trunk
VLAN passing: 1 (default vlan), 2
VLAN permitted: 1 (default vlan), 2-9, 11-4094 Trunk port encapsulation: IEEE 802.1q

3. In the network connection shown in the figure, SWA and SWB both have STP and Loopback- detection enabled. Please confirm that which of the following status description of each port of SWA and SWB is correct?

A) Loopback-detection detects a loop between G1/0/2 and G1/0/3 of SWB and blocks one of them.
B) STP detects a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them.
C) SWA's G1/0/1 may be blocked because STP detects a loop.

4. Which of the following statements about inter-VLAN communication on switches is correct?
(Multiple choice)

A) After the three-layer switch divides the VLAN, hosts in different VLANs can communicate. The method is to create a virtual three-layer VLAN interface for each VLAN on the three-layer switch. The VLAN interface needs to be configured with the corresponding IP address.
B) Hosts in VLANs divided by switches can communicate, but hosts between VLANs cannot communicate with each other.
C) After the Layer 2 switch divides the VLANs, hosts in different VLANs can communicate with each other through a router. The method is to connect the router to the switch's Trunk port with one interface, and the router must support the 802.1Q protocol.
D) After the Layer 2 switch divides the VLANs, hosts in different VLANs can communicate with each other through the router. The method is that the router has a physical interface and a physical connection to each VLAN.

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

Solutions: