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| Section | Weight | Objectives |
|---|---|---|
| Data Communication Network Basics | 10% | - TCP/UDP principles - Data forwarding process - Basic concepts and life cycle of campus network - ARP principles - Basic principles and operations of VRP (Versatile Routing Platform) - OSI and TCP/IP protocol models and functions of each layer - Basic network concepts, IP network architecture, and standardization organizations |
| Ethernet Technology Basics | 20% | - VLAN principles and configuration - Link aggregation (LACP) - MAC address table and forwarding - VLAN intercommunication (sub-interface, VLANIF) - STP / RSTP / MSTP spanning tree protocols - Ethernet overview and frame structure |
| Data Center Network Basics | 5% | - Cloud computing and virtualization basics - Data center network architecture overview - Data center fabric concepts (VXLAN, SDN) |
| WLAN Technology Basics | 10% | - WLAN networking architecture (AC + AP) - WLAN RF fundamentals (channels, bands) - WLAN basic configuration and troubleshooting - WLAN overview and 802.11 standards |
| Network O&M and Troubleshooting | 10% | - Troubleshooting methodology and process - Common network fault diagnosis - Network documentation and baselining - Network maintenance tools (ping, tracert, display commands) |
| Typical Campus Networking Solution | 5% | - Typical campus network deployment scenarios - Campus network architecture design - Network reliability and redundancy design - Hierarchical network model (core, aggregation, access) |
| Network Security and Services | 15% | - Network management protocols (SNMP, NTP) - IPsec VPN fundamentals - AAA (Authentication, Authorization, Accounting) - FTP / TFTP and file management - Network security overview - Firewall basics and security zones |
| IP Technology Basics | 25% | - ACL (Access Control List) - NAT (Network Address Translation) - IPv6 basics and address types - ICMP protocol - Static routing and default routing - OSPF fundamentals (single-area) - IPv4 addressing and subnetting - DHCP principles and configuration |
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NEW QUESTION # 41
On a campus network, SW1, an access switch, has 24 downlink Interfaces, all of which belong to VLAN 1 by default. The administrator adds interfaces 1 to 8 of SW1 to VLAN 2 and interfaces 9 to
16 to VLAN 3, and retains the default VLAN for other interfaces. In this case, all downstream devices connected to SW1 belong to the same broadcast domain.
Answer: A
Explanation:
VLANs define separate broadcast domains. In this case, interfaces are divided into VLAN 1, VLAN 2, and VLAN 3, so downstream devices connected to SW1 are distributed across multiple VLANs. Devices in different VLANs belong to different broadcast domains, meaning the entire switch does not form a single broadcast domain.
NEW QUESTION # 42
LACP is used to dynamically establish an Eth-Trunk between SW1 and SW2. Each of SW1 and SW2 has eight interfaces for aggregation, but only four links need to be active. Which of the following parameters should the administrator configure to determine the switch that is responsible for selecting active links?
Answer: B
Explanation:
In LACP, when more interfaces are available than the maximum number of active links, the device uses LACP interface priority to determine which links are selected as active. Interfaces with higher priority (lower priority value) are preferred for active forwarding.
NEW QUESTION # 43
Unlike distance-vector routing protocols, link-state routing protocols advertise link states instead of route information. Typical link-state routing protocols include RIP, OSPF, and IS-IS.
Answer: A
Explanation:
The statement is incorrect because RIP is a distance-vector routing protocol, whereas OSPF and IS-IS are link- state routing protocols.
According to the HCIA-Datacom routing protocol material, distance-vector protocols exchange routing information with neighboring routers. RIP uses hop count as its routing metric to determine the distance to destination networks.
Link-state protocols operate differently. Routers establish neighbor relationships and exchange Link State Advertisements (LSAs), which describe their interfaces, connected networks, and topology information.
Each router uses the collected link-state information to build a link-state database and calculate the best paths using a shortest-path algorithm.
OSPF and IS-IS use this link-state approach, but RIP does not.
Therefore, although the first part of the statement correctly describes link-state routing behavior, including RIP among link-state protocols makes the complete statement FALSE.
NEW QUESTION # 44
Which of the following DHCPv4 messages are sent by a DHCPv4 server?
Answer: C,D
NEW QUESTION # 45
The administrator performs the configuration shown in the figure on SW1. After the network is stable, the administrator pings the IP address of PC2 from PC1. The connectivity is normal. Then, the administrator runs the undo vlan 10 command on SW1. After the network is stable, the administrator pings the IP address of PC2 from PC1 again. Which of the following statements are false about this scenario? (Select all that apply)
Answer: B,C,D
Explanation:
Initially, both PC1 and PC2 belong to VLAN 10 through their access interfaces. They therefore communicate within the same Layer 2 broadcast domain.
When VLAN 10 is deleted, the switch removes its associated VLAN membership, and the affected access interfaces revert to the default VLAN 1. Both PCs consequently remain in the same broadcast domain and can communicate.
Option A is true because PC1 can still reach PC2 after both ports return to VLAN 1.
Option B is false because the switch internally associates received frames with VLAN information during forwarding.
Option C is false because the switch can forward traffic in both directions.
Option D is false because the switch no longer assigns the deleted VLAN 10 to incoming frames.
Therefore, B, C, and D are false statements.
NEW QUESTION # 46
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