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| Section | Weight | Objectives |
|---|---|---|
| Data Communication Network Basics | 10% | - ARP principles - Basic network concepts, IP network architecture, and standardization organizations - TCP/UDP principles - OSI and TCP/IP protocol models and functions of each layer - Basic principles and operations of VRP (Versatile Routing Platform) - Data forwarding process - Basic concepts and life cycle of campus network |
| Network Security and Services | 15% | - FTP / TFTP and file management - Network security overview - AAA (Authentication, Authorization, Accounting) - Firewall basics and security zones - IPsec VPN fundamentals - Network management protocols (SNMP, NTP) |
| IP Technology Basics | 25% | - DHCP principles and configuration - ACL (Access Control List) - NAT (Network Address Translation) - OSPF fundamentals (single-area) - ICMP protocol - IPv6 basics and address types - IPv4 addressing and subnetting - Static routing and default routing |
| Ethernet Technology Basics | 20% | - MAC address table and forwarding - VLAN principles and configuration - VLAN intercommunication (sub-interface, VLANIF) - Link aggregation (LACP) - Ethernet overview and frame structure - STP / RSTP / MSTP spanning tree protocols |
| Network O&M and Troubleshooting | 10% | - Network maintenance tools (ping, tracert, display commands) - Troubleshooting methodology and process - Network documentation and baselining - Common network fault diagnosis |
| Typical Campus Networking Solution | 5% | - Hierarchical network model (core, aggregation, access) - Typical campus network deployment scenarios - Campus network architecture design - Network reliability and redundancy design |
| WLAN Technology Basics | 10% | - WLAN networking architecture (AC + AP) - WLAN basic configuration and troubleshooting - WLAN RF fundamentals (channels, bands) - WLAN overview and 802.11 standards |
| Data Center Network Basics | 5% | - Data center fabric concepts (VXLAN, SDN) - Data center network architecture overview - Cloud computing and virtualization basics |
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NEW QUESTION # 70
FILL BLANK
On the network shown in the figure, it is required that interfaces on R1 and R3 are reachable to each other through static routes. When implementing this requirement, there is no need to configure static routes on _____. (Enter a device name in the figure, for example, R1.)
Answer:
Explanation:
R2
Explanation:
R1 and R3 are not directly connected, so each of them requires a static route pointing to the next hop through R2 to reach the remote network. However, R2 has both networks (10.0.0.0/24 and
20.1.1.0/24) directly connected on its interfaces, so it already has routes to both sides in its routing table. Therefore, no static route configuration is required on R2.
NEW QUESTION # 71
With the release of Wi-Fi 7, wireless networks are now faster, more stable, and more latency- tolerant than ever. Which of the following frequency bands are supported by Wi-Fi 7? (Select all that apply)
Answer: A,B,C
Explanation:
Wi-Fi 7 supports operation in the 2.4 GHz, 5 GHz, and 6 GHz frequency bands, so options A, C, and D are correct. These three bands together provide flexible coverage and capacity options.
The 2.4 GHz band offers better propagation and wider coverage, while the 5 GHz and 6 GHz bands provide more channels, higher capacity, and better support for high-speed, low-latency services.
NEW QUESTION # 72
The administrator runs the interface Eth-Trunk 1 command to create Eth-Trunk 1 on SW1 and SW2. After the network is stable, the administrator runs the display interface brief command on SW1, and finds that Eth-Trunk 1 is Down, the states of its member interfaces are normal, and the configuration on SW1 is correct. The possible cause is that the member interfaces on SW2 are not added to Eth-Trunk 1.
Answer: A
Explanation:
An Eth-Trunk will remain down if there is a configuration inconsistency between the two ends, but it is not specifically caused by missing member interfaces on the remote device alone. Even if SW2 has not added member interfaces, the local configuration and negotiation state (such as LACP or static Eth-Trunk consistency checks) would still determine the status, and other mismatch conditions could also lead to the same symptom. Therefore, the stated cause is not the only or guaranteed reason for the Eth-Trunk being down, making the statement incorrect.
NEW QUESTION # 73
On a switched network where STP is enabled on all devices, when a downstream device detects a topology change, it continuously sends configuration BPDUs to the upstream device until the root bridge is informed of the topology change.
Answer: A
Explanation:
This statement is false . In classic STP, when a non-root switch detects a topology change, it does not continuously send configuration BPDUs upstream to notify the root bridge. Instead, it sends a Topology Change Notification (TCN) BPDU toward the root bridge through its root port. Each upstream switch acknowledges the TCN and forwards it further until it reaches the root bridge.
After the root bridge receives the topology change notification, the root bridge sets the Topology Change (TC) flag in its configuration BPDUs, and those configuration BPDUs are then propagated throughout the network. Therefore, topology-change notification and normal configuration BPDU transmission are different functions. The statement is wrong because it confuses TCN BPDUs with configuration BPDUs , and also inaccurately describes the notification behavior. HCIA-Datacom requires learners to distinguish between these BPDU types and understand how STP reacts to topology changes by accelerating MAC address aging and informing the network through the root bridge. This process helps the Layer 2 topology converge and reduces long-lasting forwarding inconsistencies after a link or port-state change.
NEW QUESTION # 74
The following command output is displayed on R1:
[R1] display aaa configuration
Domain Name Delimiter : @
Domainname parse direction : Left to right
Domainname location : After-delimiter
Administrator user default domain : default_admin
Normal user default domain : default
Domain : total: 256 used: 3
Authentication-scheme : total: 32 used: 2
Accounting-scheme : total: 32 used: 1
Authorization-scheme : total: 32 used: 2
Service-scheme : total: 256 used: 0
Recording-scheme : total: 32 used: 0
Local-user : total: 512 used: 2
Remote-admin-user block retry-interval : 5 Min(s)
Remote-admin-user block retry-time : 3
Remote-admin-user block time : 5 Min(s)
Session timeout invalid enable : No
Which of the following statements is false?
Answer: B
Explanation:
The false statement is B. From the AAA configuration output, the value of Remote-admin-user block time is clearly shown as 5 Min(s), which means the account lockout duration is 5 minutes, not 30 minutes.
NEW QUESTION # 75
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