Free Access H3C.GB0-191-ENU.v2022-06-08.q137 Practice Test (Page 9)

Question 36

On the MSR router, the -tos parameter of the ping command specifies the value of the ToS (Type of Service) field in the ICMP Echo Request message, the value range is 0~255, and the default value is ______.

A.46

B.63

C.0

D.2

Question 37

The correct statement about STP, RSTP and MSTP is ______. (Multiple choice)

A.RSTP is an optimized version of the STP protocol. The delay for the port to enter the forwarding state is greatly shortened under certain conditions, which shortens the time required for the network to finally reach topological stability.

B.MSTP cannot converge quickly. When the network topology changes, the originally blocked port needs to wait for a period of time before it becomes the forwarding state.

C.MSTP is compatible with RSTP, but not compatible with STP.

D.MSTP can make up for the shortcomings of STP and RSTP. It can not only converge quickly, but also enable the traffic of different VLANs to be forwarded along their respective paths, thereby providing a better load sharing mechanism for redundant links.

Question 38

A network connection is like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
Two of the MSR routers MSR-1 and MSR-2 are interconnected back-to-back through their S1/0 interfaces, and their GE0/0 interfaces are respectively connected to the client hosts HostA and HostB. By configuring the IP address and routing, HostA can communicate with HostB in the current network. The IP address of HostA is 192.168.0.2/24, and the default gateway is 192.168.0.1. The GE0/0 interface address of MSR-1 is 192.168.0.1/24.
The following configuration has been added to MSR-1:
firewall enable
firewall default permit
acl number 3003
rule 0 deny icmp source 192.168.0.2 0 icmp-type echo-reply
interface GigabitEthernet0/0
firewall packet-filter 3003 inbound
So ______ . (Multiple choice)

A.HostA can be pinged on MSR-1

B.Cannot ping HostA on MSR-1

C.The IP address of interface GE0/0 of MSR-1 cannot be pinged on HostA

D.On HostA, you can ping the IP address of MSR-1 interface GE0/0

Question 39

Which of the following descriptions of circuit switching and packet switching is correct is ______. (Multiple choice)

A.The circuit switching delay is small, and the transmission is real-time

B.Low utilization of packet switching network resources

C.High utilization of circuit-switched network resources

D.Large packet switching delay, poor real-time transmission

Question 40

The basic process of Layer 2 forwarding of an Ethernet switch includes ______.

A.If a match is found and the port corresponding to the entry belongs to the VLAN corresponding to the packet, then the packet is forwarded to that port, but if the port corresponding to the entry is the same as the port that received the Ethernet frame, the packet is discarded. frame

B.Search the MAC address table according to the destination MAC address, if no match is found, then broadcast in the VLAN corresponding to the message;

C.Add or refresh MAC address table entries according to the source MAC address and VLAN ID information of the received Ethernet frame;

D.If a match is found, but the port corresponding to the entry does not belong to the VLAN corresponding to the packet, then the frame is discarded;

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Question 36

Question 37

Question 38

Question 39

Question 40

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