[Sep-2026] GB0-191-ENU Free PDF from Test4Cram [Q130-Q147]

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Sep-2026 Latest Test4Cram GB0-191-ENU Exam Dumps with PDF and Exam Engine Free Updated Today!

Following are some new GB0-191-ENU Real Exam Questions!

NO.130 The command to start the spanning tree protocol on the switch is ____.

NO.131 The TCP protocol uses ______ to distinguish different connections.

Port number

Port number and IP address

Port number and MAC address

IP address and MAC address

NO.132 The following description of the star network topology is correct ______. (Multiple choice)

Star topology is easy to maintain

In the star topology, the failure of one line does not affect the computer communication under other lines

The star topology has high robustness, and there is no single point of failure. Central node failure

Since the star topology network shares the bus bandwidth, when the network load is too heavy, it will cause performance degradation

NO.133 The two empty-configured MSR routers are connected as shown in the figure. By configuring the IP address, the GE0/0 interfaces of the two routers can communicate with each other.

Now the following configurations are added to the two routers respectively:
RTA:
[RTA]ospf
[RTA-ospf-1]area 0
[RTA-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3
[RTA-GigabitEthernet0/0]ospf dr-priority 2
RTB:
[RTB]ospf [RTB-ospf-1]area 0
[RTB-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3
[RTB-GigabitEthernet0/0]ospf dr-priority
Then after the OSPF neighbor status is stable, ______.

OSPF interfaces have the same priority, and no OSPF DR election is performed on the 192.168.1.0/30 network segment

Of the two routers, one is DR and the other is BDR

Of the two routers, one is DR and the other is DRother

The neighbor status of the two routers are FULL and 2-Way respectively

NO.134 The main link of the WAN of a company’s MSR router is a synchronous and asynchronous serial port, which is connected to the operator’s network through a V.35 cable; the router also uses an ISDN BRI interface as a backup link.
Regarding the line bandwidth, which of the following statements are correct? (multiple choice)

The bandwidth of the backup line may be 64Kbps

The bandwidth of the backup line may be 128Kbps

The bandwidth of the backup line may be 144Kbps

The bandwidth of the main link may be 1Mbps

NO.135 The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively.
At the same time, the Ethernet port of MSR-1 is connected to MSR-4. All four routers have run the RIP protocol and completed routing learning correctly. All routers have started all the features of RIP to prevent loops. At this time, it is found that the MSR If the network 192.168.0.0 on -2 fails, then ______. (Multiple choice)

The cost of the 192.168.0.0 routing item on the MSR-2 is set to the maximum value

In the routing tables on the four routers, the cost of the 192.168.0.0 routing item is set to the maximum value

MSR-2 will start the suppression time for the 192.168.0.0 routing item

On the MSR-4, the suppression time will also be activated for the 192.168.0.0 routing item

NO.136 A network connection is as follows:
HostA—-GE0/0–MSR-1–S1/0———S1/0–MSR-2–GE0/0—-HostB
The customer requires that only ICMP messages between HostA and HostB are restricted. Which of the following is feasible? (multiple choice)

Configure ACL on MSR-1 to prohibit ICMP packets from source host HostA to destination host HostB, and apply this ACL in the outbound direction of GE0/0 of MSR-1

Configure ACL on MSR-1 to prohibit ICMP packets from source host HostA to destination host HostB, and apply this ACL in the outbound direction of S1/0 of MSR-1

Configure an ACL on MSR-1 to prohibit ICMP packets from the source host HostB to the destination host HostA, and apply this ACL in the outbound direction of S1/0 of MSR-1

Configure an ACL on MSR-1 to prohibit ICMP packets from the source host HostB to the destination host HostA, and apply this ACL in the outbound direction of GE0/0 of MSR-1

NO.137 The two routers RTA and RTB are interconnected back-to-back using serial ports. The serial port of RTA is configured with HDLC protocol, and the serial port of RTB is configured with PPP protocol.
Both devices are configured with the correct IP address, then what will happen is ______. (Multiple choice)

RTB serial port physical layer up, protocol layer down

The physical layer of the RTB serial port is down, and the protocol layer is down.

The physical layer of the RTA serial port is up, and the protocol layer remains up, but RTA cannot ping RTB

RTA serial port physical layer down, protocol layer down

The physical and protocol layers of RTA and RTB serial ports are both down

NO.138 The following statements about OSPF information display and debugging commands are correct _____. (Multiple choice)

Use the display ospf peer command to view the router’s OSPF neighbor relationship

You can view the link state database of the router through the display ospf lsdb command. The link state database of all OSPF routers in the network should be the same

Use the display ospf routing command to view the router’s OSPF routing situation, not all OSPF routes will be added to the global routing table

View OSPF error information through display ospf fault

NO.139 A company’s MSR router plans to dial-up to the Internet through ISDN DCC, and the router has the following configuration:
[H3C]dialer-rule 1 ip deny
[H3C]firewall default permit
This dialer access control list dialer-rule 1 has been quoted under the dialer interface, so which of the following statements about dialing are wrong?

No IP packet can trigger dialing

Any IP packet can trigger dialing

TCP type packets can trigger dialing

UDP type data packet can trigger dialing

NO.140 SSH uses the TCP port number ______ by default.

NO.141 An empty-configured MSR router is connected to the same OSPF network through multiple interfaces, and OSPF is enabled on all these interfaces. After the configuration is completed, the router has successfully learned the OSPF routes in the network.
Now run the following command on an OSPF interface of the router:
[MSR-GigabitEthernet0/0]ospf cost 256
In the case of keeping other configurations unchanged, the correct understanding of the configuration is _____.

This configuration may affect the forwarding path of data packets

This configuration will not affect the forwarding path of data packets

The configuration command is invalid because the command was entered incorrectly

This configuration command is invalid because the maximum value of Cost is 255

NO.142 During the establishment of the TCP connection as shown in the figure, the Y part of SYN should be filled with ________.

a+1

b+1

NO.143 If the public network address of the NAT device is dynamically allocated by the operator through ADSL, in this case, you can use ______.

Static NAT

NAPT using address pool

Basic NAT

Easy IP

NO.144 Two MSR routers are connected via Ethernet and serial interfaces respectively, as shown in the figure. The PPP link layer protocol is running on the serial link, and OSPF is running on the two routers, and both belong to Area 0. At the same time, the three network segments on each router (GE interface network segment) are published in Area 0 through the network command. , Serial interface network segment, LAN network segment);
At present, the OSPF neighbors on both ends are stable, so ______. (Multiple choice)

If the OSPF Cost value is not modified, then the LAN segment from RTA to RTB will be the GE link

As long as the OSPF Cost values of the GE interface and the serial interface of the two routers are correctly modified, then two equal-value routes to each other’s LAN will be formed on RTA and RTB.

On the GE link, RTA and RTB will still conduct DR and BDR elections

All the above statements are correct

NO.145 Run OSPF between the four MSR routers and divide the area. The connection and division methods are shown in the figure.

It is known that the OSPF Cost value of all links in the network is 10, so the correct description of this figure is ______. (Multiple choice)