[Q216-Q231] Latest H12-891_V1.0-ENU Practice Test Questions Verified Answers As Experienced in the Actual Test!

NO.216 The Serial Number field of LS is used to detect expired and duplicate LSAs. The field is a 32bt signed integer, so the small serial number is Ox8000000

True

False

NO.217 For the description of firewall security zones, the following statement is correct?

The same interface of a firewall can belong to different security zones

Different security zones of the firewall, the priority can be the same

The built-in security zone of the Firewall can be deleted

Different interfaces of the firewall can belong to the same security zone

NO.218 If the PIM-SM protocol is running in a multicast network, you need to configure RP, and the configuration equation of RP is divided into dynamic RP and static RP. The following configuration description of the RP is correct (radio).

When you configure Dynamic RP, you need to configure BSR as a backup of the RP.

When you configure a static RP, you need to configure the BSR to advertise the RP information.

When configuring a static RP, you need to specify the information for the RP on all PIM routers.

When you configure Dynamic RP, you do not need to configure BSR.

NO.219 ?? ipIp- prefoi p prefierame lndeindeoxrunmber)( pemit demy)ip+4adrssmasklengh gratrequa grater-cqual abel]lescqualesequl ole) for * Pprefofiier? If a pre-list of tooequal has been specified, but the greater-equal has not been specified, then how much of the prefix’s range is sufficient? (). Radio neck).

[0, less-equal-value]

[mask-length, less-equal-value]

[less-equal-value,32]

No limit

NO.220 In an MPLS VPN network, different CE devices exchange routing information with the same PE device using different routing protocols, and different CE devices use routing protocols that are independent of each other

True

False

NO.221 In order to study the working mechanism of the OSPFv3 protocol, a project to build a network topology is as follows, the configuration of R1 and R2 is as follows, please ask the LSA switched between R1 and R2 What are the types?

network-LSA

Router-LSA

Link-LSA

Inter-area-prefix-LSA

NO.222 A router Router LSA is shown in the figure below, and the following statement is incorrect?

This router is a DR

This router has established an adjacency relationship

This router supports external route ingestion

The Router ID of this router is 100121

NO.223 Unlike STP, RSTP has only one BPDU type, its value is 2, and there is no TCN BPDU.

TRUE

FALSE

NO.224 Auto-negotiate mode is to obtain the maximum interface rate and operating mode, the network administrator configures all Ethernet interface rates of a working switch to 10OMbps, and the operating mode is configured as Full-duplex, when a network card is configured After the auto-negotiate workstation is connected to the switch, the negotiation result is that the interface rate is 10OMbps and the working mode is half-duplex, which of the following explanations is the most reasonable for this phenomenon?

The problem is on the workstation’s NIC, mostly due to the aging of the NIC driver on the workstation, which causes the workstation NIC to learn the interface rate and operating mode configured on the switch

Port rate negotiation is negotiated through the initial port sending FLP, and the operating mode is not negotiated through FLP

STP initializes the port into the blocking state, causing auto-negotiation to fail, so the port should be configured as an edge port

At higher port rates and operating modes, the workstation’s network interface card cannot be configured as auto-negotiate

Auto-negotiation is not configured on the switch, resulting in the switch not being able to send FLP messages to the workstation, causing the workstation to set its own operating mode to Half-duple

NO.225 Which is the correct description of optimal routing election for each protocol in the following options? (Radio).

Route entries in BGP that are unreachable for the next hop are also placed in the IP routing table. In the

BGP protocol, the best route to reach the same destination circumference is selected by comparing the cost values of the route entries.

The OSPF protocol puts all the routing information in the LSDB into the IP routing table.

From BGP and OSPF, different route entries to reach the same destination segment are learned, and the optimal route is selected to join the IP route table by comparing the protocol’s preference value.

NO.226 How do 8021w and 8021D handle BPDUs? (Confirmed). The

8021D bridge only forwards BPDU packets received from the root bridge

The 8021D bridge does not forward BPDU messages

The 8021w bridge forwards only BPDU packets received from the root bridge

8021w Bridge does not forward BPDU packet

NO.227 During isis ‘ broadcast network database synchronization, is the following statement correct?

R2, as DIS, sends CSNP periodically.

R2 As DIS, Hello time is 3 times that of a normal router .

R2 as DIS does not receive PSNP nouns for other routes.

RI and R3 maintain database consistency by periodically sending PSNP requests.

NO.228 WRED is configured on the newly deployed router HW. The following description of the WRED feature is correct as? (Multiple select).

WRED can set different drop thresholds and packet loss rates for packets of different priority

When traffic exceeds the minimum threshold, WRED starts dropping all ingress traffic (tail drops).

Avoid global synchronization by selectively dropping multiple TCP streams Low- bandwidth traffic is easier to drop than high-bandwidth traffic

NO.229 In an MPLS BGPVPN networking that does not enable MPLS penultimate hop pop-up technology. When the message reaches the last hop PE, the message has two layers of labels, and the two layers of label values can be the same.

TRUE

FALSE

NO.230 In the forwarding table of the switch, a MAC address can correspond to only one outlet at a time

True

False

NO.231 CORRECT TEXT
What categories can ACLs be divided into?

Advanced ACLs

Two-layer ACL

User-defined ACLs

Basic ACL