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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Switching Features | 20% | - Layer 3 switching and routing protocols - Port security and traffic control - Switch management and monitoring - DHCP relay and snooping |
| Topic 2: IP Multicast | 15% | - Multicast concepts and addressing - IGMP protocol versions and operation - PIM-DM and PIM-SM basics |
| Topic 3: Spanning Tree Protocols | 20% | - MSTP configuration and optimization - STP, RSTP and MSTP principles - Root bridge and port roles election - Bridge protocol data units (BPDU) |
| Topic 4: High Availability Technologies | 15% | - VRRP protocol and deployment - Link aggregation (LACP and static mode) - Device redundancy and failover |
| Topic 5: VLAN Technologies | 20% | - Trunk, Hybrid and Access ports - VLAN routing and Inter-VLAN communication - VLAN fundamentals and configuration - QinQ technology and application |
| Topic 6: Campus Network Overview | 10% | - Hierarchical network model - Campus network architecture and design principles |
1. In the switching network shown in the figure, VLAN10 is set as lsolate-user-vlan VLAN2 and VLAN3 as the Secondary VLAN of VLAN 10 on switch SWA; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as lsolate-user-vlan, and VLAN4 is the Secondary VLAN of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statements are correct?
A) When SWB accesses PCA, the VLAN tag of the message from SWB's GigabitEthem1/0/4 is VLAN 1.
B) PCA's message comes out from SWA's GigabitEthem1/0/3 port and enters SWB's GigabitEthe1/0/3 port. The VLAN tag it carries is VLAN2.
C) SWB's message enters from SWA's GigabitEthem1/0/3 port, and the VLAN tag it carries after exiting from GigabitEthem1/0/1 port is VLAN2
D) PCA's message enters from SWA's GigabitEther1/0/1 port and exits from GigabitEther1/0/3 port without VLAN Tag.
2. Which of the following statements about inter-VLAN communication on switches is correct?
(Multiple choice)
A) After the three-layer switch divides the VLAN, hosts in different VLANs can communicate. The method is to create a virtual three-layer VLAN interface for each VLAN on the three-layer switch. The VLAN interface needs to be configured with the corresponding IP address.
B) After the Layer 2 switch divides the VLANs, hosts in different VLANs can communicate with each other through the router. The method is that the router has a physical interface and a physical connection to each VLAN.
C) After the Layer 2 switch divides the VLANs, hosts in different VLANs can communicate with each other through a router. The method is to connect the router to the switch's Trunk port with one interface, and the router must support the 802.1Q protocol.
D) Hosts in VLANs divided by switches can communicate, but hosts between VLANs cannot communicate with each other.
3. The customer's LAN switch SWA is connected to SWB via GigabitEthenet 2/0/1 and to SWC via GigabitEthernet 2/0/2, and the SWA switch has the following configuration:
[SWA] stp region-configuration
[SWA-mst-region] instance 0 vlan 1 to 100[SWA-mst-region] instance 2 vlan 101 to 200[SWA] smart-link group 1
[SWA-smlk-group1] protected-vlan reference-instance 0 [SWA-smlk-group1] port gigabitethernet 2/0/1 master [SWA-smlk-group1] port gigabitethernet 2/0/2 slave [SWA] smart-link group 2
[SWA-smlk-group2] protected-vlan reference-instance 2 [SWA-smlk-group2] port gigabitethernet 2/0/2 master [SWA-smlk-group2] port gigabitethernet 2/0/1 slave If the SWA, SWB, and SWC ports allow all VLANs to pass, what can we learn from the above information? (Multiple choice)
A) The traffic of VLAN 102 on the SWA switch will be upstreamed through Gigabitethernet 2/0/1
B) The traffic of VLAN 2 on the SWA switch will be upstreamed through Gigabitethernet 2/0/2
C) The traffic of VLAN 102 on the SWA switch will be transmitted upstream through GigabitEthe 2/0/2
D) The traffic of VLAN 2 on the SWA switch will be transmitted upstream through GigabitEthernet 2/0/1.
4. When implementing network security management measures in a campus network, which of the following are network access control technologies or measures deployed to prevent illegal access to network resources? (Multiple choice)
A) Add a firewall
B) Deploy endpoint access defense
C) Add IAS device (Ilegal Access System)
D) Portal Authentication
5. A loop in the LAN may cause? (Multiple choice)
A) Broadcast Storm
B) The end rate changes
C) MAC address learning error
D) The port duplex mode changes
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A,B,C | Question # 3 Answer: C,D | Question # 4 Answer: A,B,D | Question # 5 Answer: A,C |
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