Exactprep H12-811_V1.0 Questions

When a Windows host first boots up and does not have an IP address, it sends a DHCP Discover message to find a DHCP server.

The source IP address of this packet is 0.0.0.0, meaning the host does not yet have an assigned IP.

The destination IP address is 255.255.255.255, which is a broadcast address.

Option A (Incorrect - 127.0.0.1): This is the loopback address, used for internal testing.

Option B (Incorrect - 169.254.2.33): This belongs to the APIPA (Automatic Private IP Addressing) range, assigned when a DHCP server is unavailable.

Option C (Correct - 0.0.0.0): The correct source IP for the initial DHCP Discover packet.

Option D (Incorrect - 255.255.255.255): This is used as the destination IP for broadcasting, not the source.

Thus, the correct answer is C.

Detailed Explanation:In manual load balancing mode, all active interfaces forward traffic, distributing it evenly across links without LACP. This allows for static load balancing. Option B is incorrect because LACP (Link Aggregation Control Protocol) is not involved in manual mode. (Reference: HCIA-Datacom Training Material, Link Aggregation and Manual Load Balancing)

Private vs Public IPs:

192.168.1.2 belongs to the private IP range (192.168.0.0/16).

Private IP addresses cannot be routed on the Internet and must be translated.

Network Address Translation (NAT):

NAT converts private IP addresses to a public IP so that the device can access the Internet.

Conclusion:

NAT is required to access the Internet from a private IP, making the statement TRUE.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 6: NAT and IP Addressing.

Router Functionality:Routers operate at the Network Layer (Layer 3) of the OSI model. They use IP addresses to forward packets between different networks and determine the best path for data transmission based on routing tables​​.

Analysis of Options:

Option A: "Network layer" is correct, as routers are Layer 3 devices.

Option B: "Transport layer" handles end-to-end communication and reliability (e.g., TCP/UDP), not routing.

Option C: "Data link layer" is for local node-to-node data transfer (e.g., MAC addresses), handled by switches.

Option D: "Application layer" is for user-facing software interactions (e.g., HTTP, FTP).

Correct Answer:Routers work at the A (Network layer).