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| Section | Objectives |
|---|---|
| Topic 1: Network Security and QoS | - QoS mechanisms
|
| Topic 2: WAN and VPN Technologies | - MPLS fundamentals
|
| Topic 3: Network Automation and Programmability | - SDN and automation
|
| Topic 4: Routing and Switching Technologies | - IP routing protocols
|
| Topic 5: IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Topic 6: Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| Topic 7: Enterprise Network Architecture | - Network design principles
|
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NEW QUESTION # 81
Refer to the figure.
Which of the following steps are mandatory to enable 802.1X authentication on GE0/0/2 and GE0/0/3 of SW3 and configure a RADIUS server to authenticate and deliver network access rights to users?
Answer: A,B,C,D
Explanation:
Understanding 802.1X Authentication in Enterprise Networks
# What is 802.1X?
802.1X is a network access control (NAC) protocol that enforces authentication before allowing a device to connect to a LAN.
It usesEAP (Extensible Authentication Protocol)overRADIUSfor user verification.
Typically deployed incorporate and campus networksforsecure wired and wireless access.
# How Does 802.1X Work?
1##Client (Supplicant) # Requests network access.
2##Switch (Authenticator) # Forwards request to RADIUS server.
3##RADIUS Server # Verifies credentials & grants access.
Mandatory Steps to Enable 802.1X on SW3
#A. Configure an AAA Scheme
Defines authentication, authorization, and accounting (AAA) methods.
Links802.1X authentication to the RADIUS server.
#B. Configure an Authentication Profile
Specifies how authentication is handled on the switch.
Associates802.1X authentication with an AAA scheme.
#C. Configure an Authentication Domain
Groups authentication policies for different user types.
MapsAAA scheme to user login requests.
#D. Configure an 802.1X Access Profile
Applies 802.1X authentication to specific switch ports (GE0/0/2 & GE0/0/3).
Ensures thatonly authenticated users can pass traffic.
Why Are All Four Steps Necessary?
#Each step plays a critical role in enabling 802.1X authentication and linking it to the RADIUS server.
#Without any one of these configurations, the 802.1X authentication process would fail.
Real-World Application:
Enterprise Wired Security:Ensures thatonly authenticated devicesaccess corporate networks.
University Campuses & Public Wi-Fi:Prevents unauthorized access tosecure LAN environments.
#Reference:Huawei HCIE-Datacom Guide - 802.1X Authentication & RADIUS Server Configuration
NEW QUESTION # 82
The following is correct about the LSA of OSPFv3
Answer: A,C
NEW QUESTION # 83
A client sends an HTTP request to a server, and the server sends back an HTTP response. Which of the following parameters isnotcarried in the HTTP response?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
AnHTTP responsefrom the server to the client typically includes the following components:
Protocol version (C):Specifies the HTTP version used (e.g., HTTP/1.1).
Status code (B):Indicates the response result (e.g., 200 for OK, 404 for Not Found).
Reason phrase (A):A textual description associated with the status code (e.g., "OK", "Not Found").
Headers and Body:Contain additional information and the actual response content.
URI (D):TheUniform Resource Identifieris part of theHTTP requestand not theHTTP response. Therefore,Dis the correct answer.
NEW QUESTION # 84
To allow only authorized users (users who obtain IP addresses through authorized DHCP servers or use specified static IP addresses) to access the network shown in the figure, which of the following solutions can be used?
Answer: A
Explanation:
Understanding Network Security for Authorized User Access
#Problem Scenario:
Only authorized users should be allowed network access.
Users can obtain IP addresses either via DHCP or a predefined static IP list.
Unauthorized users (e.g., attackers using rogue DHCP servers or spoofed IPs) must be blocked.
#Required Technologies for Securing Access:
1##DHCP Snooping- Protects againstrogue DHCP serversand builds abinding table of legitimate DHCP clients.
2##IP Source Guard (IPSG)- Ensures that onlyauthorized IP-MAC bindingscan send traffic.
Analysis of the Answer Choices:
#A. DAI + Port Security (Incorrect)
DAI (Dynamic ARP Inspection)prevents ARP spoofingbut doesnot validate IP-MAC-DHCP bindings.
Port Securityonlylimits MAC addresses per portbut doesnot verify IP addresses.
Does NOT protect against unauthorized static IP users.
#B. DHCP Snooping + IPSG (Correct)
DHCP Snooping:
Preventsrogue DHCP servers from assigning unauthorized IPs.
Builds aDHCP binding table(IP-MAC-Port).
IP Source Guard (IPSG):
Blocks trafficfrom IPs not listed in the DHCP snooping binding table.
Can be configured to allow manually specified static IP addresses.
Best choice to allow only authorized users (both DHCP and static IP users).
#C. DHCP Snooping + DAI (Incorrect)
DAI (Dynamic ARP Inspection) prevents ARP spoofingbutdoes not block unauthorized static IP users.
Lacks IP-level access controlneeded to enforce static IP policies.
#D. DAI + IPSG (Incorrect)
IPSG (IP Source Guard) needs DHCP Snooping to build the binding table.
Without DHCP Snooping, IPSG cannot function properly.
DAI does not provide complete protection against unauthorized users.
Why is the Answer B (DHCP Snooping + IPSG)?
#Ensures only users assigned a DHCP IP (or authorized static IPs) can send traffic.
#Blocks rogue DHCP servers and unauthorized static IP users.
Real-World Application:
Enterprise Networks:Prevents unauthorizedstatic IP users or attackers from accessing VLANs.
Public Wi-Fi Security:Ensures onlyauthorized users receive IPs and can send traffic.
#Reference:Huawei HCIE-Datacom Guide - DHCP Snooping and IPSG Security Mechanisms
NEW QUESTION # 85
TheNETCONF content layercontainsdevice configuration data.
Which of the following statements are correct about the followingNETCONF configuration?
< ?xml version= " 1.0 " encoding= " UTF-8 " ? >
< rpc xmlns= " urn:ietf:params:xrnl:ns:netconf:base:1.0 " message-id= " 801 " >
< edit-config >
< target >
< running/ >
< /target >
< default-operation > merge < /default-operation >
< error-option > rollback-on-error < /error-option >
< config xmlns:xc= " urn:ietf:params:xml:ns:netconf:base:1.0 " >
< vlan xmlns= " http://www.huawei.com/netconf/vrp/huawei-vlan " >
< vlans >
< vlan >
< vlanId > 10 < /vlanId >
< protocolVlans >
< protocolVlan xc:operation= " merge " >
< protocolIndex > 0 < /protocolIndex >
< /protocolVlan >
< /protocolVlans >
< /vlan >
< /vlans >
< /vlan >
< /config >
< /edit-config >
< /rpc >
Answer: A,B,C
Explanation:
Comprehensive and Detailed Explanation:
#Breakdown of the NETCONF Configuration:
#(B)
Huawei-YANG Model Used:The namespace contains http://www.huawei.com/netconf/vrp/huawei-vlan, indicatingHuawei
' s YANG model.
#(C) VLAN 10 is Created: < vlanId > 10 < /vlanId > confirms VLAN 10 is configured.
#(D) Merge Operation Used:The xc:operation= " merge " tag ensures changes aremergedrather than replacing the entire config.
#(A) Incorrect:The < edit-config > operationmodifies the running configuration,not the startup configuration.
# Reference:Huawei HCIE Datacom - NETCONF Configuration Management
NEW QUESTION # 86
......
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