Cisco Updated 200-301 Exam Questions and Answers by tadhg

The configured address 192.168.16.143 with a /28 mask is the broadcast address of its subnet, so the router correctly rejects it with a bad-mask message. A /28 mask creates blocks of 16 addresses. In the 192.168.16.128/28 subnet, the usable host range is 192.168.16.129 through 192.168.16.142, and 192.168.16.143 is the directed broadcast address. A broadcast address cannot be assigned to a router interface because it represents all hosts in that subnet, not one device. The issue is not that the router lacks /28 support, and it is not caused by private addressing. It is also not the network address; the network address would be 192.168.16.128. CCNA 200-301 v1.1 Network Fundamentals requires precise subnet boundary recognition. The verified answer is A because the address shown in the exhibit is the subnet broadcast address. Reference: Cisco IPv4 subnetting fundamentals and interface address validation behavior.

Use A for this item. IPv6 compression removes leading zeros in each hextet and compresses one longest contiguous run of zero hextets with double colon. The address 2001:0db8:0000:0000:0700:0003:400F:572B becomes 2001:db8::700:3:400F:572B. In Cisco CCNA 200-301 v1.1, Network Fundamentals questions frequently test the practical boundary between similar features: what the feature does, where it is configured, and what problem it is meant to solve. The double colon cannot be used twice, and nonzero hextets such as 400F cannot be shortened to 4F. A clean way to validate the answer is to map the wording of the scenario to the actual device function. If the feature supplies addressing, forwarding, authentication, trunking, route selection, or controller communication, the answer must match that function exactly rather than a nearby protocol name.

Use A for this item. The global spanning-tree portfast default command makes access ports transition to forwarding immediately when endpoints connect. PortFast is intended for host-facing access ports so DHCP and initial connectivity are not delayed by STP listening and learning behaviour. In Cisco CCNA 200-301 v1.1, Network Access questions frequently test the practical boundary between similar features: what the feature does, where it is configured, and what problem it is meant to solve. The trunk PortFast command is for special trunk edge cases, and disabling PortFast would not meet the requirement. A clean way to validate the answer is to map the wording of the scenario to the actual device function. If the feature supplies addressing, forwarding, authentication, trunking, route selection, or controller communication, the answer must match that function exactly rather than a nearby protocol name.

The verified answer is C. A Layer 2 switch floods an unknown unicast frame when the destination MAC address is missing from its MAC address table. The flood is limited to ports in the same VLAN and excludes the ingress port where the frame arrived. Cisco CCNA 200-301 v1.1 places this skill in Network Access, where the exam expects a working understanding of how the feature behaves on real Cisco networks, not just a memorized command. The switch does not drop the frame immediately, send it back out the receiving port, or wait for the aging timer to expire. In production, this distinction matters because a misapplied command or design choice usually creates an outage, a security gap, or unnecessary troubleshooting noise. The correct choice matches the control-plane, data-plane, wireless, security, or services behaviour described in the scenario and should be preferred over options that merely sound related.