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| Section | Objectives |
|---|---|
| Topic 1: Network Services | - NAT - DHCP |
| Topic 2: Network Fundamentals | - OSI and TCP/IP models - Basic network components and operations |
| Topic 3: Ethernet Switching | - MAC address learning and forwarding - Spanning Tree Protocol (STP/RSTP/MSTP) - VLAN configuration and operations |
| Topic 4: IP Routing | - OSPF routing protocol - BGP fundamentals - Static routing |
| Topic 5: Network Security Basics | - Access Control Lists (ACL) - Basic device security configuration |
| Topic 6: IPv4 and IPv6 | - IPv6 addressing and deployment - IPv4 addressing and subnetting |
| Topic 7: QoS and Traffic Management | - QoS concepts and mechanisms |
Question 1
The IP address of host PCA is 40.1.1.1, and the MAC address is 0011.1111.1111. PCA is connected to [SWA] vlan 10 of switch SWA.
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] protocol-vlan ipv4
[SWA-vlan20] quit
[SWA] vlan 30
[SWA-vlan30] quit
[SWA] mac-vlan mac-address 0011-1111-1111 vlan 30
[SWA] vlan 40
[SWA-vlan40] ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[SWA-vlan40] quit
[SWA] interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1] port link-type hybrid
[SWA-GigabitEthernet1/0/1] port hybrid pvid vlan 10
[SWA-GigabitEthernet1/0/1] port hybrid vlan 10 20 30 40 untagged
[SWA-GigabitEthernet1/0/1] port hybrid protocol-vlan vlan 20 0
[SWA-GigabitEthernet1/0/1] port hybrid ip-subnet-vlan vlan 40
[SWA-GigabitEthernet1/0/1] mac-vlan enable
[SWA-GigabitEthernet1/0/1] vlan precedence ip-subnet-vlan
After the configuration is completed, which of the following can be determined that PCA will join?
A. VLAN20
B. VLAN30
C. VLAN 10
D. VLAN40
E The configuration command is incorrect.
Question 2
In the switching network shown in the figure, all three switches have only the default VLAN 1. The interconnected ports of the three switches are all Trunks, and all VLANs are allowed to pass. The global and port GVRP functions are enabled on the three switches. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet 1/0/1 port on the switch SWA is set to Fixed. Check the status information of each Trunk port on the three switches.
Which of the following is correct?
A. [SWB] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0(sec)Port link-type: trunk
VLAN passing: 1(default vlan),10,20
VLAN permitted: 1(default vlan),2-4094 Trunk port encapsulation: IEEE 802.1q
B. [SWB] display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0(sec)Port link-type: trunk
VLAN passing: 1(default vlan),10,20
VLAN permitted: 1(default vlan),2-4094 Trunk port encapsulation: IEEE 802.1q
C. [SWA] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0 (sec)Port link-type: trunk
VLAN passing: 1 (default vlan), 10, 20
VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
D. [SWC] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ......
PVID: 1
Mdi type: auto
Link delay is 0 (sec)Port link-type: trunk
VLAN passing: 1 (default vlan), 10, 20
VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
Question 3
Which of the following is the core goal of high-reliability redundant network design?
A. Maximize network bandwidth
B. Maximize network access security
C. Minimize the existence of single point failures in the network
D. Minimize network management complexity
Question 4
The improvements of SNMP vc2 compared with SNMPV1 protocol include which of the following?
(Multiple choice)
A. Added the GETBULK REQUEST operation, which can request large amounts of data at once
B. All operations become non-atomic, greatly improving the effectiveness of protocol message interaction
C. Provide more reliable security mechanism, safer to use
D. Provide more error codes to express errors more accurately and facilitate problem location
Question 5
As shown in the figure, SWA, SWB and SWC enable STP. If the bridge priority of SWA is set to
61440 after the topology converges, which of the following statements are correct? (Multiple choice)
A. By default, the topology will converge again after 30 seconds.
B. After the priority is adjusted, SWA will still send configuration BPDUs with itself as the root.
C. After the configuration BPDU saved locally by SWB ages, it will send a configuration BPDU with itself as the root to SWA.
D. After receiving the low-priority configuration BPDU, SWC will immediately respond with the configuration BPDU with itself as the root.
Solutions:
| Question 1 Answer: D | Question 2 Answer: D | Question 3 Answer: C | Question 4 Answer: A | Question 5 Answer: B |
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