H12-223 Huawei Certified Network Professional-R&S-IEEP Questions and Answers

Defense against bogus DHCP server attacks

Defense against DoS attacks on the DHCP server

Defense against MAC address flooding attacks

Source MAC address check for data packets in collaboration with DAI

Source IP address check for data packets in collaboration with IPSG

An ACL is configured to disable TCP port 179.

The peer router ID conflicts with the local router ID.

The peer ebgp-max-hop command is not configured when loopback interfaces are used to establish the EBGP peer relationship.

The peer connect-interface command is not configured when loopback interfaces are used to establish the BGP peer relationship.

Parties affected by the fault

Authorization parties in each phase of troubleshooting

Other vendors and service providers

Users who are interested in the root cause for the fault

Modular

Automatic

Hierarchical

Modern

Standard

TRUE

FALSE

TRUE

FALSE

Focus on how to better solve faults, regardless of whether a fault is within your own responsibility scope.

Pay attention to user feedback and identify faults based on user feedback.

To minimize the fault effect, try not to let others know the network fault.

Check whether the troubleshooting is within your own responsibility scope.

Port density

CPU frequency

Switching capacity

Packet forwarding capability

MAC address table size

Port rate

Routine maintenance is a preventive measure.

Through routine maintenance, administrators can obtain the network baseline, laying a good foundation for troubleshooting.

Routine maintenance has high technical requirements for operators but no high requirements for operation standardization.

Network maintenance is not just a technical issue but also a management issue.

GPON/EPON

xDSL

FTTH

HFC

Determine that the backbone area will not split.

Check whether secondary optimal routes exist on the network according to OSPF route selection rules.

Check whether all non-backbone areas are correctly and reliably connected to the backbone area.

Check the OSPF network topology and ensure that no loop exists when OSPF routes are being calculated.

Verify that OSPF costs can correctly demonstrate the actual bandwidth of links at more than 100 Mbit/s.

Backbone network

Transport network

Data center network

Wireless network

Storage network

Reduce the broadcast domain on the network and the probability of broadcast storms.

Achieve separate convergence of Layer 2 and Layer 3 to increase the convergence speed and network stability.

Properly design the Layer 2 network scale, reduce network segment allocation, and improve network management efficiency.

Allow configuring access devices as Layer 2 devices, reducing network construction costs.

Leverage the STP and VRRP mechanisms to improve network reliability.

MSTP

TRILL

NFV

FCoE

VxLAN

TRUE

FALSE

Border security optimization aims to prevent or reduce external network attacks and harm.

The optimization position is usually located at the network edge.

Optimization measures include attack defense technologies, packet filtering, and hardware firewalls.

Border security optimization aims to achieve secure user access control.

Management authorization

Technology authorization

Customer authorization

Administrative authorization

The SSH protocol is not bound in the VTY user interface view.

The user service type, authentication type, and user service type are not configured.

The SSH server and client have inconsistent versions.

The SSH first-time authentication function is disabled.

Horizontal subsystem

Access subsystem

Backbone subsystem

Vertical subsystem

Switching subsystem

To test whether applications are properly connected

To test whether a routing protocol can prevent loops

To test whether a switch can prevent loops and broadcast

To test whether a physical link is disconnected

Provide a database backup tool.

Support multi-user management.

Support management of the WLAN and MPLS VPN.

Support hierarchical management model.