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| Section | Objectives |
|---|---|
| Topic 1: Routing Technologies | - Dynamic routing fundamentals (OSPF basics) - Static routing |
| Topic 2: Network Security Basics | - Basic network security concepts - Access control lists (ACL) |
| Topic 3: IP Addressing and Subnetting | - IPv4 addressing and subnet masks - IPv6 fundamentals |
| Topic 4: Network Fundamentals | - Basic network topologies and devices - OSI and TCP/IP models |
| Topic 5: Network Management and Troubleshooting | - Basic troubleshooting tools and methods - Device management concepts |
| Topic 6: IP Services | - DHCP and DNS concepts - NAT basics |
| Topic 7: WLAN Basics | - Wireless networking fundamentals |
| Topic 8: Switching Technologies | - STP/RSTP concepts - VLAN configuration and trunking |
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NEW QUESTION # 70
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: A
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 # 71
What is the broadcast address of the network that contains a host with IP address 192.168.1.147/28?
Answer: C
Explanation:
A /28 subnet mask corresponds to 255.255.255.240, which means each subnet contains 16 IP addresses . The subnet boundaries in the last octet increase in steps of 16: 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, and so on. The host address 192.168.1.147 falls within the subnet range 192.168.1.144 to 192.168.1.159 .
In that subnet, the network address is 192.168.1.144, the usable host range is 192.168.1.145 through
192.168.1.158, and the broadcast address is 192.168.1.159. Therefore, option C is correct. Option D is the first usable host address, not the broadcast address. Option A is just another usable host address. Option B would be the broadcast address only for a /24 network, not for a /28. HCIA-Datacom requires learners to master subnetting because it is essential for IP planning, gateway deployment, route summarization, and troubleshooting Layer 3 communication issues in campus and enterprise networks.
NEW QUESTION # 72
R1 has four static routes, each of which has a reachable next hop. Given the following static route configuration, what is the next hop of the route to 20.0.0.0/30 in R1's routing table?
[R1] ip route-static 20.0.0.0 30 10.1.1.2
[R1] ip route-static 20.0.0.0 30 10.1.2.2 preference 70
[R1] ip route-static 20.0.0.0 30 10.1.3.2 preference 50
[R1] ip route-static 20.0.0.0 30 10.1.4.2 preference 100
Answer: C
Explanation:
When multiple static routes exist to the same destination prefix and all next hops are reachable, the device selects the route with the highest priority, which on Huawei devices means the lowest preference value. In this question, all four static routes point to the same destination network
20.0.0.0/30, but they have different preference values.
The route through 10.1.1.2 uses the default static route preference, which is 60 on Huawei devices. The route through 10.1.2.2 has a preference of 70, the route through 10.1.3.2 has a preference of 50, and the route through 10.1.4.2 has a preference of 100. Since 50 is the lowest value among them, the route via 10.1.3.2 is preferred and installed in the routing table. Therefore, option D is correct. HCIA-Datacom emphasizes that when prefix length is identical, route preference determines which route is active. This principle is widely used in route backup design, where primary and floating backup static routes are configured using different preference values to control failover behavior.
NEW QUESTION # 73
Drag and Drop Question
On the campus network shown in the figure below, the core switch Core1 functions as a Layer 3 gateway and as a DHCP server to dynamically assign IP addresses to AP1, PC1, PC2, and PC3.
The network below Core1 is a Layer 2 network. WAC1 and R1 are connected to Core1 at Layer
3. AP1 goes online through VLAN 100. VLAN 101 and VLAN 102 are respectively used for the wireless and wired services. Additionally, the tunnel forwarding mode is used for wireless traffic forwarding. Match device interfaces with their respective allowed VLANs. (Note: No additional VLANs are allowed on device interfaces, and interconnection VLANs are not considered.)
Answer:
Explanation:
Explanation:
VLAN 100 -> GE1/0/3 of ACC1
VLAN 101-> GE1/0/2 of Core1
VLAN 102 -> GE1/0/1 of ACC2
VLAN 100 and VLAN 101 -> GE1/0/1 of ACC1
VLAN 100 and VLAN 101 -> GE1/0/3 of Core1
VLAN 102 -> GE1/0/4 of Core1
GE1/0/3 of ACC1 -> VLAN 100: This interface directly connects ACC1 to AP1. Since AP1 goes online through management VLAN 100 and wireless user traffic uses tunnel forwarding mode (where user data is encapsulated inside a CAPWAP tunnel directly to WAC1), the physical link to the AP only needs to pass the untagged management traffic of VLAN 100.
GE1/0/2 of Corel -> VLAN 101: This port links Corel to WAC1. In tunnel forwarding mode, all wireless user data (VLAN 101) is encapsulated inside CAPWAP data tunnels by the AP and sent to the WAC. The WAC then decapsulates this traffic and forwards it into the core switch.
Therefore, the interface facing WAC1 must allow service VLAN 101 to route the decapsulated wireless traffic.
GE1/0/1 of ACC2 -> VLAN 102: This interface forms the uplink from the access switch ACC2 to Corel. Because ACC2 only services PC3 (wired service VLAN 102), its uplink only requires access to VLAN 102.
GE1/0/1 of ACC1 -> VLAN 100 and VLAN 102: This is the uplink interface from ACC1 to Corel.
ACC1 hosts AP1 (which requires management VLAN 100) and PC2 (which belongs to wired service VLAN 102). Therefore, this trunk link must allow both VLAN 100 and VLAN 102.
GE1/0/3 of Corel -> VLAN 100 and VLAN 102: This interface connects Corel down to ACC1. To match the configuration of ACCTs uplink, it must allow both the AP management traffic (VLAN
100) and the local wired user traffic (VLAN 102).
GE1/0/4 of Corel -> VLAN 102: This port connects Corel to ACC2. Because ACC2 exclusively handles the wired clients residing in service VLAN 102, this downlink interface only needs to permit VLAN 102.
NEW QUESTION # 74
There are two Ethernet frame formats: Ethernet_II and IEEE 802.3. The Ethernet_II frame format uses the Type field to determine the upper-layer protocol type, and the IEEE 802.3 frame format uses the Tag field to determine the upper-layer protocol type.
Answer: A
Explanation:
Ethernet II frames use the Type field to indicate the upper-layer protocol, while IEEE 802.3 frames use the Length field (not a Tag field) to distinguish frame length. The protocol type in IEEE
802.3 is determined by the LLC/SNAP layer above the frame, not by a Tag field.
NEW QUESTION # 75
......
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