Huawei H12-224 HCNP-Routing&Switching (Fast Track) (Huawei Certified Network Professional -Routing&Switching) Exam Practice Test

link State ID in Network-Summary-LSA is set as the destination network IP address

Net mask in Network-Summary-LSA is set as the network mask of the destination network segment

Metric in NETwork-Summary-LSA is set the cost of a route from an ABR to a destination network segment

Network-Summary-LSA is generated by an ASBR.

TRUE

FALSE

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.

Down, Init, 2-way, Exchange, Exstart, Loading, Full

Down, Exstart, 2 way, Init, Exchange, Loading, Hull

Down, Init, Exstart, Exchange, Loading, Full

Down, Init, 2 way, Exstart, Exchange, Loading, Full

in idle state, bgp denies all connection requests, this is the initial state of bgp.

In active state bgp attempts to establish a tcp connection, this is the intermediate state

of bgp.

in established state, bgp peers can exchange update, route-refresh, keepalive, and

notification message.

A BGP peer relationship can be established only when both

BGP peers are in open confirm state, two bgp peers send update messages to exchange

routes.

Different zones of firewall can use the same priority.

A firewall interface can belong to different

Different firewall interfaces can belong to the

The default firewall zone can be deleted.

TRUE

FALSE

The operator between nodes Is OR,

The operator between nodes is AND.

The operator between if-match clauses under a node is AND

The operator between if-match clauses under a node is OR

The high 24 bits of the multicast MAC address are 0x01005f the is fixed to 1and the

lower 23 bits of the MAC

One multicast MAC address maps to 32 multicast IP addresses

A multicast MAC address identifies receivers of a multicast group on the data link layer

One multicast MAC address maps to only one multicast IP address

Display ospf peer

Display ip ospf peer

Display ospf neighbor

Display ip ospf neighbor

Necessity

Feasibility

Risks

Costs

The VRRP master periodically sends VRRP packets.

The VRRP master uses the virtual MAC address to respond to ARP Request packets destined for the virtual IP address.

The VRRP master forwards IP packets destined for the virtual MAC address.

Even if the router becomes the master, the backup router with a higher priority preempts to be the master.

200

150

100

0

AS-external-LSAs can be advertised within a stub area

AS external route can only be based on a default route that is manually configured on an

ABR.

A virtual link cannot pass through a stub area

Any area can be a stub area

The end with a smaller LACP system priority functions as the Active side. If the two ends have the same LACP system priority, the

The end with a smaller MAC address is selected as the Active side.

The end with a higher LACP system priority functions as the Active side. If the two ends have the same LACP system priority, the

The end with a lower LACP system priority functions as the Active side. If the two ends have the same LACP system priority, the

Provide a database backup tool

Support multi-user management

Support management of the VLAN and MPLS VPN

Support hierarchical management model

TRUE

FALSE

Backbone network

Transport network

Data center network

Wireless network

Storage network

AII BGP routers must identify these attributes

These attributes must be transmitted between BGP peers

These attributes do not necessary to be carried in Update messages, and BGP routers

can determine whether to carry them in Update messages

These attributes do not necessary to be transmitted between BGP peers

if a LSP fails to forward data the MPLS control plane responsible for ISP select this error

The main function of MPLS forwarding plane can add labels or delete labels from an IP packet and forward the received packets

After an IP packet enters the MPLS network, the ingress LER will analyze IP packet and add proper to the packet

MPLS can use Ping or Trace route to detect LSP errors and locate faulty nodes

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 m ill

FALSE

To ensure that sensitive management information will not be intercepted

To prevent or reduce external network attacks and harm

To ensure secure access to key services

To achieve secure user access control

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

Hello packet

DD. packet

LSA Update packet

LSA Request packet

TRUE

FALSE

TRUEB

FALSE

1000-3999

2000-2999

3000-3999 0-1000

The Virtual Router Redundancy Protocol (VRRP)is designed for networks with multicast and broadcast capabilities, such another router if it fails so that uninterrupted and reliable communication is guaranteed

When VRRP is used the virtual router ID. and virtual IP address need to be configured on the router, the MAC address of

Hosts on the network communicate with the virtual router. There is no need to learn all information of physical routers on1

A virtual router consists of one master router and several backup routers. he master router provides forwarding function takes over its work

openflow listening-ip 1.1.1.1

sdn controller souce-addressl.1.1.1

controller-ip 1.1.1.1

sdn listening-ip 1.1.1.1

Two BGP-running routers must have IP connectivity if they need to establish a TCP connection

If two BGP peers exchanging BGP messages belong to the same AS the two peers are IBGP peers

If two BGP peers exchanging BGP messages belong to different AS, the two peers are EBGP peers

IBGP peers must be physically directly connected

The S9700 provides more slots and interface

The S9700 supports non-blocking data switching.

The S9700 supports the redundancy design for engines, power modules and fans.

The S9700 provides data center features such as Transparent Interconnection of Lots of

STP automatically runs by default and therefore does not require configuration

The STP convergence speed is slow which may cause network interruption. Therefore, disabling STP is a preferred solution

Similar to the implementation for routing Protocols data flows between switches can be adjusted by modifying link costs

For routine STP configuration the position of the STP blocked port is controlled to ensure that the blocked port is not located on a backbone link or device

The RSTP algorithm is simple and reliable and supports fast convergence. Therefore, all switches on the network are configured to work in RSTP mode.

The lease renewal timer is 50% of the total lease. When the release timer expires, the DHCP s

The rebinding timer is 87% of the lease.

If the rebinding timer expires but the DHCP client does note receive any responses from the DHCP server address to it before until to total lease expires.

If the DHCP client receives a DHCP NAK packet within the lease the client stops using the current IP address.

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.

IDS

PS

FW

VPN

PrefVal

MED

AS_Path

Origin

TCP provides an acknowledgement and retransmission mechanism for BGP

Before establishing a TCP connection BGP devices need to exchange Update messages

BGP uses Notification and Update messages to establish and maintain peer relationships

Ds BGP uses the TCP port 179 for communication

TRUE

FALSE

An access control list (ACL) matches routing information or addresses is data packets

to filter out router or data packets that do not meet matching conditions

An IP prefix matches destination addresses of routes or directly applies to a router object (gateway)

An AS-Path filter matches the AS-Path attribute in BGP mutes so it can only filter BGP mutes.

A community-filter matches community attributes in BGP routes, so it can only filter

BGP mutes.

A route-policy can only match mutes and data packets, but cannot route attributes or forwarding behaviors for data packets

Energy expenses

Line construction expenses

Line lease expenses

Equipment depreciation expenses

Staff expenses

Solution formulation

Authorization obtaining

Technical review

Implementation and result feedback

If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port

The role of the designated port that is enabled with root protection cannot be changed.

When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does

RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state.

After TC protection is enabled, you can set the number of times the switch processes TC BPDUs with a certain period.

Application layer

Physical layer

Network layer

Link Layer

Account soft-out reminder

Password updated reminder

Log protection reminder

Data backup reminder

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

TRUE

FALSE

RSVP is used to transmit signaling of Qos requests notifying the router of Qos requirements of the application

Lt provides guaranteed bandwidth and delay to meet requirements of the application

Lt can provide a load control service to ensure that even in the case of network overload can provide services similar to the net model ensures that packets of some applications can be processed with the low delay

ln this model the network maintains the status of each flow(IP addresses and port numbers of source and destination and destination ends )meeting application requirements

5s

10s

3.3 s

40s

An Eth-Trunk cannot be nestled and a member interface cannot be an Eth-Trunk

An Ethernet interface can join only one Eth-Trunk Before adding an Ethernet interface

to an Eth-Trunk ensure that the Ethernet interface

Lf the local device uses the Eth-trunk the remote interface directed to the member interface must join the Eth-Thrunk so that bot

An Eth-Trunk can work in layer 2 or Layer 3 mode The two working modes can be identified automatically and do not need to be switch

improves network availability and performance

improves the productivity

Reduces costs

implements knowledge transfer

it sends an error message to the muter that sends the Update message

it does not add this mute to its BGP muting table and discards this mute

lt accepts and adds this mute to its BGP muting table, However this mute will not be preferred by BGP and not added to

it accepts and adds this mute to its BGP muting table This mute will participate in BGP mute selection and many become

IGMPv1 and IGMPv2 do not support queries election but IGMPv3 does

lGMPv2 and IGMPv3 allow users to leave a group proactively whereas IGMPv1 does not

None of IGMPv1 IGMPv2,and IGMPv3 supports the SSM model

IGMPv1 does not support group-specific query whereas IGMPv2 does

GRE

IPSec VPN

SSL VPN

L2TP VPN

Packet length

Source and destination addresses

Protocol type

Source and destination MAC addresses

display ospf cumulative

display ospf spf-statistics

display ospf global-statistics

display ospf request-queue