100% PASS RATE H3CNE GB0-191-ENU Certified Exam DUMP with 434 Questions [Q66-Q89] : Valid Premium Exam : http://premium.validexam.com

NO.66 As shown in the figure, four MSR routers are connected via Ethernet and serial interfaces, and OSPF is running in the network at the same time. The area is divided as shown in the figure.

It is known that the OSPF Cost value of all interconnection links is the same, except that the link between RTB and RTC is PPP, the other interconnection links are all Ethernet. So ______ . (Multiple choice)

There are at least three DRs in the network

There are at least three BDRs in the network

If the link between RTD and RTC fails, RTD and RTC will immediately send LSA summary information to RTA and RTB without waiting for a fixed LSA update cycle

After the state is stable, the four routers have the same LSDB

NO.67 The two branches of XYZ company are located in different regions, and a wide area network connection must be established between them. According to the plan, the WAN adopts the PPP protocol. Considering network security, it is required that password-type message information is not allowed to be transmitted in clear text on the network. Then which PPP authentication protocol should be adopted?

PAP

CHAP

MD5

3DES

NO.68 Which of the following statements about HDLC is correct is ______. (Multiple choice question)

The HDLC protocol is a bit-oriented transport layer protocol.

Any bit stream can be transparently transmitted on the HDLC link.

The HDLC protocol adopts a unified frame format, so both data messages and protocol messages are transmitted in standard format frames on the HDLC link.

HDLC can run on the same/asynchronous link, so it has a wider range of applications.

NO.69 If a port running STP in the Ethernet switch does not receive or forward data, receives but does not send BPDUs, and does not perform address learning, then the port should be in the ______ state.

Blocking

Listening

Learning

Forwarding

Waiting

Disable

NO.70 A Layer 3 switch is connected to the GE0/0 interface of the customer’s router MSR-1, and this Layer 3 switch is the default gateway for multiple network segments of the customer’s office network to which it is connected. MSR-1 is connected to the Internet through the serial port S1/0. The entire network has been interoperable normally, and office network users can access the Internet. Add the following ACL configuration on the router:
firewall enable
acl number 3004
rule 0 deny ip source 192.168.1.0 0.0.0.255
rule 5 permit tcp source 192.168.0.0 0.0.255.255
rule 10 permit icmp
At the same time, ACL 3004 is applied in the inbound direction of GE0/0, then ______. (Multiple choice)

The router allows users on the 192.168.2.0/24 network segment to pass the FTP data stream sent from the Internet

The router allows ICMP packets of all users to pass

The router prohibits all IP traffic to the Internet from users on the 192.168.1.0/24 network segment from passing through

The router allows users on the 192.168.1.0/24 network segment to pass the WWW service traffic to the Internet

NO.71 In the router’s routing table, there is an entry for a route with a network segment of 10.168.100.0/24, with a Cost of 20 and a Preference of 255, so which of the following statements about this route are correct?

This route must be learned through dynamic routing

The priority of this route is the highest value, which means any route from an untrusted source

Cost 20 means that the hop count of the route is 20

This is an effective dynamic route

NO.72 The two MSR routers are connected as shown in the figure.

OSPF is currently running between the two routers. Now that you need to configure an ACL on RTA to prevent the establishment of OSPF neighbor relationship between RTA and RTB, which of the following ACLs is feasible to apply in the outbound direction of the GE0/0 interface of RTA?

acl number 3000 rule 0 deny ip destination 224.0.0.5 0 rule 5 permit ip

acl number 3000 rule 0 deny ip destination 224.0.0.5 0 eq 89 rule 5 permit ip

acl number 3000 rule 0 deny udp destination-port eq 89 rule 5 permit ip

acl number 3000 rule 0 deny ospf rule 5 permit ip

NO.73 On the MSR router, I hope to adjust the Keepalive packet time of the HDLC protocol to 20 seconds. The correct configuration is ______.

In the system view, use the command hdlc hold time 20

In the system view, use the command hdlc timer hold 20

In the interface view, use the command timer hold 20

In the interface view, use the hold time 20 command

NO.74 In subnet division, which part of the natural classification IP address is occupied by the subnet number?

Network number part

host number part

Subnet number part

None of the above is correct

NO.75 A company needs to connect to the WAN to form a corporate network, and the bandwidth of the connection is required to be greater than 1Mbps. Which of the following interfaces and protocols are available?

V.35 protocol interface and cable, using PPP as the link layer protocol

V.35 protocol interface and cable, using Frame Relay as the link layer protocol

PRI interface and cable, bundle multiple time slots, use PPP as the link layer protocol

BRI interface and cable, bundling multiple time slots, using PPP as the link layer protocol.

NO.76 To modify the device name, you should use the ______ command (please write the full command).

NO.77 Two empty-configured MSR routers are directly connected back-to-back through their respective WAN Serial1/0 interfaces, and their interconnection network segment is 192.0.0.0/24.
At the same time, the two routers are connected to their respective LAN segment users through their respective GigabitEthernet0/0:
HostA—-GE0/0–MSR-1–S1/0———S1/0–MSR-2–GE0/0—-HostB
Configure RIPv1 on the two routers, and now both routers have learned the RIP route of the opposite LAN segment. So which of the following statements are correct?

If the LAN segment of one of the routers is 10.0.0.0/24, then the routing table of the other router will learn the route of 10.0.0.0/8

The way to exchange RIP packets between the two routers is multicast

RIP packets between two routers are transmitted based on TCP

CHAP authentication can be configured on the WAN interface of the two routers to enhance network security

NO.78 A network connection is shown in the figure.

All interfaces of the four routers are configured with OSPF, and they are all running in OSPF area 23. All network segments can be connected to each other.
The OSPF Cost of the interconnection links between routers is shown in the figure. Then the correct description below is ______. (Multiple choice)

RTD has the same LSDB as RTA

RTC calculates the best path to the 192.168.2.0/24 network segment according to the SPF algorithm as C->A->B

After SPF calculation, the cost value of the path from RTC to 192.168.4.0/24 and to 192.168.2.0/24 is the same, so an equal-cost route will be formed on RTC

RTC will have two OSPF neighbors

NO.79 On the MSR router, by default, the configuration file is suffixed with ______.

.bin

.sys

.txt

.cfg

NO.80 If you need to configure the IP address of the Ethernet port on the MSR, you should configure it under ______.

System view

User view

Interface view

routing protocol view

NO.81 The hub (Hub) works in the ______ of the OSI reference model.

Physical layer

Data link layer

Network layer

Transport layer

NO.82 If all 0 and all 1 subnets can be used as effective subnets, the class C address 192.168.1.0 is subnetted with a 26-bit subnet mask, and the number of effective subnets that can be divided is ______.

NO.83 The correct statement below is ______. (Multiple choice)

DCE (Data Circuit Terminating Equipment, data communication equipment or data circuit terminal equipment) equipment and its connection with the communication network constitute the user network interface of the network terminal. It provides a physical connection to the network for forwarding traffic, and provides a clock signal for synchronizing data transmission between DCE equipment and DTE equipment.

DTE (Data Terminal Equipment, data terminal equipment) equipment refers to the equipment located at the user end of the user network interface, it can be used as a source, a sink, or both at the same time. Data terminal equipment is connected to a data network through a data communication device (for example, a modem), and usually uses a clock signal generated by the data communication device. Modems and interface cards are examples of DTE devices. Is an example of a DCE device

CSU (Channel Service Unit): A digital interface device that connects end users with the local digital telephone loop. Usually it and DSU are collectively referred to as CSU/DSU. CSU equipment includes computers, protocol translators, and demultiplexers. DTE equipment includes these

DSU (Data Service Unit): refers to a device used in digital transmission, which can adapt the physical layer interface on the DTE device to communication facilities such as T1 or E1. The data service unit is also responsible for signal timing and other functions. It is usually mentioned together with CSU and is called CSU/DSU.

NO.84 It is required to set a subnet mask to divide a class B network 172.16.0.0 into seven subnets, and each subnet should contain as many hosts as possible, so the subnet mask should be _____. (Dotted decimal format) slightly

NO.85 It is found in the routing table of an MSR 30 router that the cost value of the route to the destination network segment 61.232.200.253/22 is 16, so the correct description of this route entry is ______. (Multiple choice)

If the route is learned through the RIP protocol, then the route may be in a suppressed state

The route may be a static route

If the route is learned through the RIP protocol, it is possible that the network 61.232.200.253/22 is malfunctioning

The route can only be a dynamic route

NO.86 In the OSI reference model, encryption is a function of ______.

Physical layer

Transport layer

Session layer

Presentation layer

NO.87 Which part of the subnet division technology is implemented on the basis of the natural classification of IP address division?

Network number part

host number part

Subnet number part

prefix part

NO.88 The XYZ company administrator is subnetting the office network. It is required to divide a class B network segment into several subnets of equal size for office users in various departments, but there is no limit to the size of the subnets. There can be ___ kinds of division methods. (Please fill in Arabic numerals)

NO.89 If a port running STP in the Ethernet switch receives and forwards data, receives, processes and sends BPDUs, and performs address learning, then the port should be in the ______ state.

Blocking

Listening

Learning

Forwarding

Waiting

Disable