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Exam : Huawei GB0-320
Title : Huawei(r) Constructing Enterprise-level Switching Networks


1. The layer 2 switch supporting VLAN has solved the following problem: ( )
A.Security
B.High efficiency
C.Flexible management
D.All the above items are false.
Answer: abc

2. The GARP itself is only a protocol specification but not an entity existing in the switch. The application entity that observes the GARP protocol is called the GARP application. ( )
T.True
F.False
Answer: t

3. Which of the following Ethernet standards support speed rate auto-negotiation? ( )
A.10BASE-T
B.100BASE-TX
C.1000BASE-LX
D.1000BASE-SX
Answer: ab

4. Which of the following descriptions of the transparent bridge is false?( )
A.The transparent bridge can learn the MAC address by itself.
B.The transparent bridge can expand LAN.
C.The transparent bridge needs to modify the IP packet first, and then forward it.
D.The transparent bridge is the equipment working on the layer 2.
Answer: c

5. If setting the working rate of Quidway S3526 Ethernet port 10 only to be 100Mbit/s, which of the following commands should be used?
A.speed 10
B.speed 100
C.speed auto
D.speed full
Answer: b

6. Which of the following descriptions of port aggregation technology are true?
A.This technology is applied in the connection between switch and switch
B.This technology is applied in the connection between switch and router
C.The technology is not applied in the connection between the high-speed server
D.This technology is not applied in the connection between the switch and the high-speed server
Answer: ab

7. Through which of the following packets is the BPDU packet transmitted?
A.IP packet
B.TCP packet
C.Ethernet frame
D.UDP frame
Answer: c

8. The values of the bridge priorities are not consecutive, and they are based on a certain step length, which is the step length? ( )
A.16
B.100
C.1024
D.4096
Answer: d

9. Which of the following descriptions of the port status transition under RSTP is false? ( )
A.In the case that there are redundant paths leading to the root, if the original path is faulty, only several milliseconds is needed for finding the path fault and restoring the link connectivity.
B.In the case of point-to-point link, only one handshake is needed for the designated port to be transited to the Forwarding status. And the delay period is only several milliseconds.
C.For the bridging network running RSTP, the stable period of topology must be more than 30 seconds (Twice the period of ForwardDelay)
D.The port directly connecting to the PC can be rapidly transited to the Forwarding status, but the subscribers need to configure it to be the edge port first.
Answer: c

10. As shown in the following figure, the corresponding links of Port 1 ~ Port 4 are the trunk links allowing all the VLANs to pass and the GVRP protocol is activated. The GVRP registration mode of Port 4-switch 3 is set to be Forbidden and the GVRP registration modes of the ports on other switches are set to be Normal. VLAN5 and VLAN6 are configured on the switch 1 and VLAN 6 and VLAN 7 are configured on the switch 3. The following are the VLAN configuration situations of the ports of the switch except the default VLAN. Which of the items are true? ( )
A.VLAN 5 and VLAN 6 are configured over port 1.
B.VLAN 5~VLAN 6 are configured over port 2.
C.VLAN 6 and VLAN 7 are configured over port 3.
D.VLAN 6 and VLAN 7 are configured over port 4.
Answer: ab

11. Compared with the common Ethernet packet, which of the following items are newly added in VLAN packet ruled in IEEE802.1Q protocol? ( )
A.TPID (Tag Protocol Identifier)
B.Priority
C.Canonical Format Indicator (CFI)
D.VLAN Identifier (VLAN ID)
Answer: abcd

12. Multiple layer switching is realized according to the following information. ( )
A.Source MAC address and destination MAC address
B.Source IP address and destination IP address
C.source port number and destination port number
D.IP packet protocol numbe
Answer: abcd

13. The Ethernet link layer is divided into two sub-layers by IEEE803. The two sub-layers are: ( )
A.Physical sub-layer
B.MAC sub-layer
C.LLC sub-layer
D.IP sub-layer
Answer: bc

14. Which of the following descriptions of the Blocking status (Discarding status) of the spanning tree is false? ( )
A.In Blocking status, BPDU packet can be received.
B.In Blocking status, no packet can be received.
C.In Blocking status, no MAC address can be learned.
D.In Blocking status, no data packet can be forwarded.
Answer: b