Unfiled wired and wireless management

Consistent service experience anytime. anywhere

Fast deployment of mobile applications

Strict hierarchical networking

Security zone

Trusted zone

Untrusted zone

DMZ

TRUE

FALSE

TRUE

FALSE

1000-3999

2000-2999

3000-3999 0-1000

Source DR

Receiver s router

Last-hop router

RP router

MTBF/MTTR*100%

MTTR/MTBF*100%

(MTBF+MTTR)/MTBF*100%

MTBF/(MTBF+MTTR)*100%

K3MP runs between receiver hosts and multicast routers and defines the mechanism

for creating and maintaining group member

Distance Vector Multicast Routing Protocol (DVMRP) is a dense mode protocol it defines a route hop cunt limit of 32

EM is a typical intra-domain multicast routing protocol and can operate in the dense mode(DM)or sparse mode(AM)

MSDP can spread multicast routes across ASs

Trusted zone — Untrusted zone

Untrusted zone --Trusted zone

Untrusted zone --DMZ

Trusted zone — Local zone

Starvation attacks by changing the CHADDR field value

Bogus DHCP server attacks

TCP flag attacks J

Man-in-the-middle attacks and IP/MAC spoofing attacks

Minimizing on services

Achieving optimal risk prevention

Formulating a complete migration solution

Carrying out the migration smoothly

Port isolation controls access between interfaces of switches

Port isolation prevents the computers connects to differ faces from accessing each other

Port isolation can be configured based on VLANs

Port isolation is an isolation mechanism at the physical layer

An ABR is connected to multiple areas and maintains the same LSDB for all areas.

The metric of an AS-external-LSA can be specified during the import of external mutes

and defaults to 1.

External muting information can carry a tag, the tag information is contained in a Type 5

or Type 7 LSA.

The Link State ID. in an ASBR-Summary-LSA is ser as the muter ID. of this ASBR.

TRUE

FALSE

An ACL is configured to prohibit all TCP connections between two BGP neighbor

Two IBGP peers are not physically directly connected

BGP synchronization is enabled on fully-meshed IBGP peers

Two BGP peers are configured with different routing Update intervals

the buffer overflow attack indicates that an attacker uses defects of memory operations of the software system and runs attack codes with high operation rights.

the buffer overflow attack is irrelevant to the OS vulnerabilities and architecture.

the buffer overflow attack is the most common attack of the software system.

the buffer overflow attack is an application-layer attack.

Life cycle assessment ( LAC ) is a technique to check and analyze life cycles of devices on the live network. With lea, end of sales, production, software update, or technical support, preventing life cycle-caused operation risks.

Software assessment & recommendation is a technique to assess and analyze all software used by party a in the service period. Base proper software version to prevent issues caused by know issues.

Configuration assessment & optimization is a Technique to develop and periodical! maintain device configuration profiles on customer recommendation result, this service applies related software to command lines in the recommended target version, implementing refined configure

Network health check enables huawei technology experts to review the

Rationality security and scalability of the network architecture based on improvement suggestions based on the assessment result.

MSTP is configured incorrectly

A physical link alternates between up and Down triggering the device to send a large number of TC packets

The MSTP-enabled device receives MSTP TC packets that are transparently sent or from the client

The priority of the port in the specified MSTL is not configured

AF21

AF22

AF23

AF21 AF22 and AF23 traffic

150

100

80

40

ip extcommunity-filter

route-policy

filter-policy

peer-list

Storage device

Network device

Server

Air conditioning system

Preferentially guarantee the services that require short delay low packet loss low jitter

and assured bandwidth

Provide channels for packet forwarding

Ensure bandwidth for specific traffic

Ensure that packets are forwarded with the minimum delay

You do not need to configure the principal VLAN and subordinate VLAN in sequence

The MUX VLAN function must be enabled on an interface so that it can take effect

The principal VLAN and the subordinate VLAN of the MUX VLAN can be the same

VLAN

The MUX VLAN can contain only one subordinate group VLAN

Display ospf peer

Display ip ospf peer

Display ospf neighbor

Display ip ospf neighbor

BGP routes do not need to be periodically updated.

BGP sends complete routing table information during each router update.

BGP periodically sends Open messages to detect TCP connectivity.

BGP updates routes in multicast mode.

local-Preference

Tag

MED

AS. Path

All BGP routes learned from all BGP peer

Routes learned only from an IBGP peer

Routes learned only from an EBGP peer

Optimal route preferred by BGP

Broadcast domain

Switching domain

Bridge domain

VLAN domain

Accuracy

Good portability

Verification

Rollback

SIC

SWIC

HSIC

XSIC

Packets are flooded on the entire network

The aging time of MAC address entries is changed.

Some MAC address entries are deleted.

The entire MAC address table is deleted.

RSTP BPDUs with the TC are used

STP BPDUs with the TC are used

RSTP BPDUs with the TCA are used

STP BPDUs with the TCA are used

Solution formulation

Authorization obtaining

Technical review

Implementation and result feedback

Check the port configuration to verify that the MSTP-enabled port is configured (for example using the bpdu enable command) to

The port connected to a user device has MSTP disabled or is configured as the edge port

The BPDU tunnel configuration has no impact on MSTP

Check whether the interface is added to the correct VLAN

Configure the user access port as an edge to prevent the user from connecting to the switch on this port.

Configure root protection on the user access port to ensure that the user does not connect to a switch with a higher priority

Configure loop protection on positions where loops have occurred so that loops are always blocked

Configure BPDU protection so that the switch checks the validity of each received

BPDU to prevent attacks of forged

The DiffServ model provides different services destined for different destinations.

The DiffServ model provides different services destined for different sources.

The DiffServ model does not need to maintain the status of each flow.

The DiffServ model applies to large-scale backbone network.

Neighbor relationship establishment

Route calculation

Link information exchange

Router advertisement

TRUE

FALSE

it is determined by the accepted service interruption duration.

It must be longer than the upgrade execution time

Troubleshooting time must be reserved.

Only network maintenance personnel need to notified of the operation window time while the customer does not

TRUE

FALSE

In static LACP mode after joining the Eth-Trunk the member interfaces send the system priority. System priority system MAC address

A larger LACP system priority indicates a higher priority. The end with a larger LACP system priority functions as the Active MAC address functions as the active side

The passive side determines active interfaces based on the LACP priority and ID. (interface number ) of an interface on

Data can be forward and normally even both devices select different interfaces.

If a high bandwidth of the link between two directly connected devices is required but the remote does not support LACP you

In static LACP mode a larger LACP priority of an interface indicates a higher priority of

the interface and a high probability of become

The interface that forwards data is called the active interface that does not forward data

is called the inactive interface fails.

When preemption is enabled and an active interface fails , the backup interface with a larger priority becomes the active interface after become the active interface.

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

LDP label distribution can be controlled in ordered mode

ln ordered mode when an LSR is the origin of a route it can send label mapping messages to the upstream router in

LDP label distribution cannot be controlled in independent mode

ln independent mode an LSR cannot send label mapping messages to the upstream router before it receives label m

The two routes will be both advertised to other BGP peers

One optimal route is selected from the two routes and then advertised to other BGP peers

The two routes will not be advertised to other BGP peers

One optimal route is selected from the two routes and then advertised to IBGP peers

FIFO

RED

WRED

WFQ

BFD

RSTP

iSPF

Smart-Link

224.0.0.18

224.0.0.20

224.0.1.18

224.0.1.20

Star topology

Ring topology

Bus topology

Dual-star topology