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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Communication Network Basics | 10% | - OSI and TCP/IP protocol models and functions of each layer - TCP/UDP principles - Basic network concepts, IP network architecture, and standardization organizations - Basic principles and operations of VRP (Versatile Routing Platform) - Basic concepts and life cycle of campus network - ARP principles - Data forwarding process |
| Topic 2: Data Center Network Basics | 5% | - Data center fabric concepts (VXLAN, SDN) - Cloud computing and virtualization basics - Data center network architecture overview |
| Topic 3: IP Technology Basics | 25% | - DHCP principles and configuration - ICMP protocol - OSPF fundamentals (single-area) - IPv6 basics and address types - Static routing and default routing - ACL (Access Control List) - IPv4 addressing and subnetting - NAT (Network Address Translation) |
| Topic 4: Network O&M and Troubleshooting | 10% | - Troubleshooting methodology and process - Network maintenance tools (ping, tracert, display commands) - Common network fault diagnosis - Network documentation and baselining |
| Topic 5: Typical Campus Networking Solution | 5% | - Hierarchical network model (core, aggregation, access) - Campus network architecture design - Network reliability and redundancy design - Typical campus network deployment scenarios |
| Topic 6: Network Security and Services | 15% | - Network security overview - FTP / TFTP and file management - Firewall basics and security zones - Network management protocols (SNMP, NTP) - AAA (Authentication, Authorization, Accounting) - IPsec VPN fundamentals |
| Topic 7: WLAN Technology Basics | 10% | - WLAN RF fundamentals (channels, bands) - WLAN basic configuration and troubleshooting - WLAN networking architecture (AC + AP) - WLAN overview and 802.11 standards |
| Topic 8: Ethernet Technology Basics | 20% | - Ethernet overview and frame structure - MAC address table and forwarding - Link aggregation (LACP) - VLAN intercommunication (sub-interface, VLANIF) - STP / RSTP / MSTP spanning tree protocols - VLAN principles and configuration |
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NEW QUESTION # 48
Private addresses are network or host addresses that are constrained for use within internal networks and cannot be used for Internet access directly. Which of the following IP addresses is not a private IP address?
Answer: D
Explanation:
Private IPv4 address ranges are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. The address
172.32.32.32 falls outside the private 172.16.0.0-172.31.255.255 range, so it is a public IP address and not a private one.
NEW QUESTION # 49
FILL BLANK
On the OSPF network shown in the figure, S1 is a Layer 2 switch. A total of_____DRs will be elected on this network. (Enter only digits.)
Answer:
Explanation:
1
Explanation:
A DR election occurs on each OSPF broadcast multi-access segment. In this topology, R1, R2, and R3 are connected through the Layer 2 switch S1, forming a single broadcast domain, so only one DR is elected there. The link between R3 and R4 is a point-to-point connection, which does not require DR election. Therefore, only one DR exists in the entire network.
NEW QUESTION # 50
What are the types of IPv6 extension headers? (Choose all that apply.)
Answer: A,B,C,D
Explanation:
IPv6 extension headers are used to provide optional network-layer information and are inserted between the IPv6 header and the upper-layer protocol. The standard extension headers include Hop-by-Hop Options, Routing, Fragment, and Destination Options headers, all of which are valid IPv6 extension header types used to extend functionality without modifying the base IPv6 header.
NEW QUESTION # 51
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: C
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 # 52
On the OSPF network shown in the figure, all IP addresses can communicate with each other.
Then the following configurations are added on R1:
[R1] acl 3000
[R1-acl4-advance-3000] rule deny ip source 10.0.1.1 0.0.0.0
[R1-acl4-advance-3000] rule deny ip source 10.1.1.1 0.0.0.0
[R1-acl4-advance-3000] rule permit ip source 10.3.1.1 0.0.0.0
[R1-acl4-advance-3000] rule permit ip
[R1-acl4-advance-3000] quit
[R1] traffic classifier test
[R1-classifier-test] if-match acl 3000
[R1-classifier-test] quit
[R1] traffic behavior test
[R1-behavior-test] permit
[R1-behavior-test] quit
[R1] traffic policy test
[R1-trafficpolicy-test] classifier test behavior test
[R1-trafficpolicy-test] quit
[R1] interface GE 0/0/1
[R1-GE0/0/1] traffic-policy test outbound
[R1-GE0/0/1] quit
Which IP addresses of S1 can successfully ping 10.0.23.3? (Select all that apply)
Answer: A,B,C,D
Explanation:
All four addresses can successfully ping 10.0.23.3, so the correct answer is A, B, C, D.
The key point is that the traffic policy is applied outbound on GE0/0/1 of R1, which is the interface facing S1. When S1 pings 10.0.23.3, the echo request travels from S1 to R1 and then to S2. The return echo reply from 10.0.23.3 comes back to R1 and is then sent outbound on GE0/0/1 toward S1. Therefore, the traffic policy examines the reply packets, not the original ping request packets.
In those reply packets, the source IP address is 10.0.23.3, and the destination is one of S1's loopback addresses. The ACL rules denying 10.0.1.1 and 10.1.1.1 as source addresses do not match these reply packets, because those addresses appear as destination addresses, not source addresses. In addition, the ACL contains rule permit ip, which permits all remaining IP traffic. As a result, replies to all four S1 addresses are forwarded successfully, so every listed address can ping 10.0.23.3.
NEW QUESTION # 53
......
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