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H3C GB0-191-ENU Exam Syllabus Topics:

H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:

1. The default subnet mask for class A addresses is ______.

A) None of the above is correct
B) 255.255.0.0
C) 255.255.255.0
D) 255.0.0.0

2. An empty-configured MSR router is connected to the local LAN user through the GE0/0 interface, and directly connected to the remote router through the S1/0 interface. The IP addresses of GE0/0 interface and S1/0 interface are 10.1.1.1/24 and 172.16.1.1/30 respectively.
In order to ensure the intercommunication with remote LAN users, the following routes are configured on the MSR:
[MSR] ip route 10.20.0.0 255.255.255.0 s1/0
After the configuration, the MSR receives the data packet sent to the destination address 10.20.0.254/24. After the static route is found in the routing table, how will the MSR deal with the data packet next?

A) Parse the MAC address of the S1/0 interface, update the destination MAC address, and then re-encapsulate the IP packet
B) Encapsulate the IP packet into a frame conforming to the S1/0 interface link, and then forward it from the S1/0 interface
C) The packet is discarded because the destination host is not listed in the routing table
D) The packet is discarded because the next hop address is not listed in the routing table
E) Find the IP address corresponding to interface S1/0, and then forward the IP packet from interface S1/0

3. A network connection is like:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
The two MSR routers MSR1 and MSR2 are interconnected back-to-back through their S1/0 interfaces, and their GigabitEthernet0/0 interfaces are respectively connected to the client hosts HostA and HostB. HostA can communicate with HostB in the current network by configuring the IP address and routing.
The following configuration has been added to MSR-2:
firewall enable
acl number 3000
rule 0 deny tcp destination-port eq telnet
interface Serial1/0
link-protocol ppp
ip address 1.1.1.2 255.255.255.252
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound
interface GigabitEthernet0/0
ip address 10.1.1.1 255.255.255.0
So which of the following statements are correct? (multiple choice)

A) The last configured firewall packet-filter 3000 outbound will not replace the firewall packet-filter 3000 inbound command
B) Can't successfully Telnet to MSR-1 on HostB
C) The firewall packet-filter 3000 outbound configured later will replace the firewall packet-filter 3000 inbound command
D) Telnet to MSR-1 on HostB successfully

4. The role of link aggregation is ______.

A) Can avoid switching network loops.
B) Increase link bandwidth.
C) Data load balancing can be realized.
D) Increased link reliability between switches.

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

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

Solutions: