Cisco Updated 200-301 Exam Questions and Answers by bogdan

Answer A is the technically correct selection. OM3 and OM4 are both multimode fiber types with a 50-micron core. OM4 supports higher bandwidth and longer distances for some speeds, but both share the 50/125-micron multimode physical profile. This aligns with Cisco CCNA 200-301 v1.1 because the exam blueprint requires engineers to recognize operational behaviour from configuration symptoms and topology requirements. A 9-micron core is single-mode fiber, and 62.5-micron describes older multimode categories. Treat the distractors carefully: most are real Cisco terms, but they solve a different problem or operate at a different layer. The selected answer is the one that would be used by an engineer on the device or in the design to produce the outcome stated in the question.

A Layer 2 switch floods a frame with an unknown destination MAC address out all ports in the same VLAN except the port where the frame entered. That behavior is not a fault; it is normal Ethernet switching. The switch learns from the source MAC address of incoming frames, not from the unknown destination. If the destination MAC is already in the MAC address table, the frame is forwarded only out the associated port. If it is missing, the switch must treat the traffic as unknown unicast and flood within the VLAN so the destination has a chance to receive it. The switch does not drop the frame just because the destination is unknown, and it does not send it only to the CPU for learning. Cisco CCNA v1.1 Network Access covers switching fundamentals, including MAC learning, forwarding, filtering, and flooding. The decisive detail is the VLAN boundary: flooding is limited to the same VLAN and excludes the ingress port.

IPv6 DNS record mapping follows the same DNS logic as IPv4 but uses IPv6-specific address records where needed. An AAAA record maps a hostname to an IPv6 address. A PTR record supports reverse lookup, mapping an address back to a name through the reverse DNS tree. CNAME provides an alias from one hostname to another canonical hostname. NS records identify authoritative name servers for a zone, and MX records identify mail exchangers for a domain. Cisco CCNA 200-301 v1.1 Network Fundamentals and IP Services expect candidates to understand DNS at a practical level: users and applications use names, while the network ultimately forwards to addresses. For drag-and-drop questions, do not match by visual similarity; match by function. If the description asks for IPv6 host-name-to-address resolution, choose AAAA. If it asks for reverse resolution, choose PTR. Alias behavior is CNAME, authority is NS, and mail routing is MX.

To avoid co-channel congestion in the 2.4-GHz band, adjacent access points should use different nonoverlapping channels. In many regulatory domains, the standard 2.4-GHz nonoverlapping channel plan is 1, 6, and 11. Using overlapping channels causes adjacent-channel interference, while using the same channel nearby creates co-channel contention where devices must wait longer to transmit. A single nonoverlapping channel across multiple adjacent APs is still a contention problem. Cisco CCNA 200-301 v1.1 Network Fundamentals includes wireless principles such as RF bands, channels, overlap, and basic design. The goal is not simply to maximize signal strength; it is to provide coverage while minimizing contention and interference. In practice, engineers plan cell size, transmit power, and channel reuse together. For this question, the recommended approach is different nonoverlapping channels. The correct answer is A.