Free and Premium Huawei H12-261_V3.0 Dumps Questions Answers

BGP

static routing protocol

OSPF

MPLS LDP

Added maximum response time field

Added out-of-group packets

Added specific group query message

Added specific source group query packets

VP configured on the local endThe total number of instances in N with IPv6 address family enabled is 1.

VPN-Instance vpna will not receiveVPN routing with RT of 2:1.

GigabitEtheThe rmet1/0/0 interface is bound to the VPN-Instance vpna.

The device will be the VPN-Instance Each route of the vpna is assigned a label.

TRUE

FALSE

1Class LSA

2Class LSA

3Class LSA

4Class LSA

Category 5 L SA

DR routers use FF08::6

DR routers use FF02::6

All OSPsF Router uses FFO2::5

All OSPsF Router uses FF08:5

BGP. POP3. SNMP, TFTP. Telnet B. HTTPS.SNMP.POP3.DNS.Telnet

HTTPS.BGP NetbiosNameServer POP3.Telnet

Finger, DHCP Server, Netbios Name Server, POP3, Telnet E. LDAP. SNMP TFTP. POP3. Telnet

allow peerPE decides which VPNv4 routes to import into a specific VRF

allow peerPE decides which VPNv4 routes to not import into a specific VRF

allow peerCE decides which VPNv4 routes to import into a specific VRF

allow peerCE decides which VPNv4 routes to not import into a specific VRF

A non-fragmented packet using port 21 to access the server

Packets that are not the first fragment and use port 23 to access the server

Non-first fragmented packets to access other hosts

Packets that are not the first fragment and use port 21 to access the server

The first fragmented or non-fragmented packet that uses port 23 to access the server

NAT64

IPv46 over IPv44

Dual Stack

ISATAP

TRUE

FALSE

Eerror Notification Message

Keepalive Message

Initialization Message

Hello Message

True

false

R1

R2

R3

R4

TRUE

FALSE

Agile Controller-Campus

Agile Controller-WAN

Agile Controller-DCN

True

false

During packet forwarding, the two ASBRs need to exchange the VPN's private network LSP once.

An IP-EBGP neighbor relationship needs to be established between two ASBRs.

Cross-domain VPThe N_OptionB scheme is not limited by the number of interconnecting links between ASBRs.

twoThe ASBRs exchange outer labels for VPNV4 routes.

R3 andR1 Systemm ID Repeat

R3 and R1 have different area numbers

R3 andR1 IS-Leve1 Do not match

R3 andR1 IIH Authentication failed

The Register message enables the RP to learn the multicast source information

The Register message is sent by the receiver router

The Register message is sent to the RP via unicast instead of multicast

The Register message is sent by the source DR

116

118

112

114

Use traffic shaping in the ingress direction and traffic policing in the egress direction

For traffic shaping, routers buffer excess packets until bandwidth is available again

Traffic policing uses the token bucket algorithm, and traffic shaping uses the SPD algorithm

For traffic policing, it can be more thanCIR Traffic Adjustment Buffer Usage

For traffic shaping, can be more thanCIR Traffic Adjustment Buffer Usage

100, 200, 300

400, 300, 200, 100

100, 200, 300, 400

300, 200, 100

BGP-IPv6 Unicast address family

BGP-VPNv 4 address family

BGP-IPv4 broadcast address family

BGP-VI Instance IPv6 address family

PIM Join information.Every 60 Sent once per second to refresh the upstream router m for the multicast treeroute State

PIM Join message per 3 Sent once every minute to refresh the upstream router mroute for the multicast tree State

the upstream router sends a PIMJoin acknowledgement in response to each received from the downstream router

PIM Join message PIM Join message. Only sent when the multicast tree is first established

A BGP router will not announce any updates from EBGP peers to its EBGP peers.

Any updates from IBGP peers. Routing information from peers will be advertised to other IBGP peers

Non-RR BGP The router will not advertise anything from the IBGP Updates from peers to other IBGsP peer

Through AS-PATH attribute, discarding any updates received from EBGP peers that contain their own AS number in the AS-PATH attribute

300 4200

1234 1400

3100

100

OSPF version number changed from 2 to 3

There is no change in the option field of the He11o packet

Hello packets no longer contain address information and carry Interface ID

Removed Authentication, Auth Type field

source address

destination port number

source port number

destination address

20

10

40

30

OSPFThere are two types of imported external routes. The first type of external route takes precedence over the second type of external route.

Use default in BGP-route impoThe rted command is only used to import the default route that already exists in the local IP routing table.

When ISIS imports external routes, if the type of route to be imported is not specified, the L1/2 router imports Level-1 by default.routing.

When ISIS imports external routes, if the type of route to be imported is not specified, the L1 router will import Leve1 by default.-1 route.

00-00-5E-00-01-64

01-00-5E-00-01-03

01-00-5E-00-01-64

00-00-5E-00-01-03

MP-EGP by MP_REACH_NLRI and IP_UNREACH_NLRI Two attributes to advertise VPNv4 routing

MP-BGP The required message is quasi-VP type N, v4VP route N is distributed by v4 distribution and privately issued network label policy label slightly with BGP-4 same

When the PE and CE exchange routes through BGP, a BGP process needs to be created on the CE for each VPN instance

Route- The filtering relationship between the nodes of the Policy is"Or", that is, as long as it passes the filtering of a node, it can pass the Route- Policy.

For locally advertised routes, configure routing policies, which take effect before adding routes to the BGP routing table.

In the same node of Route-Policy, multiple if-match clauses for different attributes are "or" relationship.

on receivingBGPWhen routing peers, implement routing policies to filter unnecessary BGP routes, and these routes will not be added to the local BGP routing table.

Open Notepad, enter undo debugging all, copy the command line, paste it into the Monitor interface

Exit the current Monitor interface, re-SSH into the device to open a new Monitor interface

Open Notepad, enter undo terminal debugging, copy the command line, and paste it into the Monitor interface

Open Notepad, enter undo terminal monitor, copy the line command, and paste it into the Monitor interface

In the case of CE multi-homing, enabling the BGP AS number replacement function may cause routing loops. BGP So can be used to prevent routing loops in VPN sites.

When BGP is used to exchange routing information between PE and CE, if the autonomous systems where the two VPN sites are located use the same private AS number, the AS number replacement function can be used to replace the received AS number with any specified AS number. The As number in the private network route, to prevent the route from being discarded due to repeated AS numbers

When BGP is used to exchange routing information between PE and CE, there is no need to import private network routes into BGP on PE.

In the Hub & Spoke scenario, when Hub-CE and Hub-PE use IGP, Spoke-PE and Spoke-CE cannot use EBGP

R3 must be the DIS of a level-1 link

The R3 router is a level-1-2 router

R3 must be the DIS of a level-2 link

R3 router system ID is 0003.0000.0000

Digital signatures guarantee the integrity of digital certificates.

Digital certificates contain public key information.

When the peer certificate received is within the validity period, but the device's own time is incorrect and the certificate is not within the validity period, the authentication fails.

two pEven if the RI entity is not in the same CA system, as long as the two parties can identify the other party's CA, the identity verification can be completed.

If As is configured-set, the AS_PATH of the summary route contains the AS path information of all specific routes to prevent routing loops

If Supp is configuredress-policy also generates aggregated routes. The if-match clause in Route-policy is used to select suppressed detailed routes. Detailed routes matching the Route-policy will still be advertised to other BGP neighbors

If Origin is configured-policy, only with Route Only the detailed routes matching the policy can participate in the aggregation

If Attrbute-policy is configured, you can change the attributes of the aggregated route

Inform

Get

Response

Trap

Get Bulk

bfdSession can be established, after negotiation 40ms

bfdSession can be established, after negotiation 30ma

bfdSession can be established. each at its own time interval

bfdSession could not be established

Route entries for 10.0.2.2/32 and 10.0.0.0/16 exist in R1's IP routing table

There are both 10.0.3.3/32 and 10.0.0.0/16-bit routing entries in the IP routing table of R1

becauseR2 has performed route aggregation, and only the route entry of 10.0.0.0/16 exists in the IP routing table of R1

Route entries for 10.0.2.2/32 and 10.0.3.3/32 exist in R1's IP routing table

30

80

50

40

Trap, Get and Set

Get, Set and Getnext

Get, Set, Getnext and GetBulk

Get, Set and GetBulk

Trap only

Layer 2 gateway:It is used to solve the problem of tenants accessing the VXLAN virtual network, and can also be used for subnet communication of the same VXLAN virtual network.

Layer 3 gateway:Used for cross-subnet communication of VXLAN virtual networks and access to external networks.

VXLAN Layer 3 gateways can be divided into centralized gateways and distributed gateways.

The Layer 2 gateway is bound to the VPN instance.

R2 can learn two routes, 10.1.2.0/24 and 10.1.3.0/24.

R2 can learn the route 10.1.1.0/24.

R2 can receive the LSP of R1, but cannot add it to the routing table.

R2 can learn all routes of R1.

True

false

Advanced ACL can be applied to route In policy, filter routes

entry pemit :: 0 less-equal 128 means allow all IPv6 routes to pass through

ifMore than one node is defined in Route-policy, and at least one of each node should have a matching mode of permit

Route-Policy can filter only default routes

EBGP Multi-hop is not configured

Firewall did not let go of IP protocol number 89

Firewall did not let go of UDP port number 179

BGP neighbors must form layer 2 adjacencies

1

15

10

5

True

false

Basic ACL

Layer 2 ACL

Advanced ACL

User-defined ACL

The switch will drop the frame

The switch will record the source MAC address of the data frame and flood the data frame

The switch will forward the data out an interface according to the destination MAC address of the data frame

The switch will buffer the data frame and forward it after waiting for the destination host to send the data frame

R2 router's LSDB does not have R4's LSP

R2 router's LSDB does not have R3's LSP

R1 router's LSDB does not exist R4's LSP

R3 router's LSDB does not exist R4's LSP

Obtain relevant information after parsing the BPD service

Close the port

Forward BPDUs as required

Directly discard the BPDUs

True

false

If the BGP protocol is running, use the community attribute to mark the route

Use ACLs to mark routes on routers.

Use tagsThe value marks the route on the router.

use ip-prefix in The route is marked on the router.

64

32

16

128

Duplicate address detection

Neighbor status tracking

Path MTU discovery

Address resolution

ASBR cannot be stored in stub area.

Virtual connections cannot pass through stubsarea.

Type injection is not allowed in stub area7 LSA

The backbone area cannot be configured as a stubarea.

Use filter-Policy, in OSPOn ASBR in F, type5 can be LSA and type7 LSAgeneration is filtered.

Prefix lists can be used to filter routes as well as to filter packets.

filter-policy can filter received or advertised link state information, and can modify the attributes of routing entries.

When using the prefix list to filter routes, the entry ip ip-prefix 1 deny 0.0.0.0 0 less-equal 32 indicates that only the default route is matched.

MAC authentication does not require a user name and password, so RADIUS cannot be used to authenticate user identities.

RADIUS supports both wired and wireless access methods.

RADIUS protocol authentication, authorization and audit separation.

RADIUS authentication and Portal authentication cannot be used together, because when Portal authentication is deployed, the Portal server can be used to authenticate users.identity.

True

false

matches the address of the group the user joinedGroup-wide mask length for C-RP services

C-RP priority

IP address of the C-RP interface

Number of the C-RP interface

Users can use 802.1x authentication to access the network, RADIUS completes authentication.

RADIUS authentication and WTACACS authentication are mutually exclusive, and dual authentication cannot be performed for the same user at the same time.

RADIUS authentication and HWTACACS authentication can perform dual authentication for the same user at the same time, which is more secure.

RADIUS authentication and 802.1x authentication are mutually exclusive.

Network-LSA

Router-LSA

Link-LSA

Inter-Area-Prefix-LSA

The Gigabit/thernet0/0/0 interface of router A will participate in IPv6 routing calculation

The GigabitEthernct0/0/0 interface of router A belongs toNSSA area

Router A supports AS-External-LSA flooding

routerA is an OSPFv3 device with forwarding capability

The 2022::/64 route will appear in the IP routing table

The 2019::/64 route will appear in the IP routing table

The 2020::/64 route will appear in the IP routing table

The 2021::/64 route will appear in the IP routing table

A carried by routeSPATH attribute to filter routes received from BGP neighbors. For example the command peer xxxx as-path-fliter import

Route apply clause in policy

A carried by routeSPATH attribute to filter routes sent to BGP neighbors. For example the command peer xxxx as-path-ilter export

if-match clause in Route-policy

50

5

10

15

Aggregator

Local-Pref

Multi Exit-Disc

Community