{"id":11881,"date":"2026-09-14T12:49:27","date_gmt":"2026-09-14T12:49:27","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=11881"},"modified":"2026-09-14T12:49:27","modified_gmt":"2026-09-14T12:49:27","slug":"cisco-ccna-200-301-practice-test-questions-and-exam-dumps-part-11-q201-220","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-ccna-200-301-practice-test-questions-and-exam-dumps-part-11-q201-220\/","title":{"rendered":"Cisco CCNA 200-301 Practice Test Questions and Exam Dumps Part 11 Q201-220"},"content":{"rendered":"<h2><b>View Full\u00a0<a href=\"https:\/\/www.examlabs.com\/200-301-exam-dumps\">Cisco 200-301 Exam Dumps<\/a>\u00a0and Practice Test Dumps.<\/b><\/h2>\n<p>&nbsp;<\/p>\n<h3><b>Question 201<\/b><\/h3>\n<p><b>Which subnet mask provides 126 usable IPv4 host addresses in a subnet?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">255.255.255.128<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">255.255.255.192<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">255.255.255.224<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">255.255.255.240<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A subnet that requires 126 usable IPv4 host addresses needs 128 total addresses because two addresses are normally reserved for the network and broadcast addresses. A block containing 128 addresses uses a \/25 prefix, which corresponds to the subnet mask 255.255.255.128. The usable host range therefore contains 126 addresses. A \/26 provides only 62 usable addresses, while \/27 provides 30 and \/28 provides 14. Selecting the correct subnet mask is important when designing IPv4 networks because it determines both the number of available subnets and hosts per subnet.<\/span><\/p>\n<h3><b>Question 202<\/b><\/h3>\n<p><b>Which command enables IPv6 routing on a Cisco router?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ipv6 routing-enable<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ipv6 unicast-routing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">enable ipv6 routing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ip routing ipv6<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">ipv6 unicast-routing<\/span><span style=\"font-weight: 400;\"> global configuration command enables a Cisco router to forward IPv6 unicast packets between interfaces. Without this command, an IPv6-enabled interface can have an IPv6 address, but the router does not operate as an IPv6 router for forwarding unicast traffic. The command is entered from global configuration mode. After IPv6 routing is enabled, administrators can configure IPv6 addresses, static routes, or dynamic IPv6 routing protocols as required. This command is a fundamental step when configuring a Cisco device for IPv6 routing.<\/span><\/p>\n<h3><b>Question 203<\/b><\/h3>\n<p><b>Which protocol is used by Cisco switches to exchange information about directly connected Cisco devices?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CDP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DHCP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">FTP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cisco Discovery Protocol, or CDP, allows Cisco devices to discover information about directly connected neighboring Cisco devices. CDP can provide details such as the neighbor&#8217;s device ID, local and remote interfaces, platform, software version, and management address. It operates at Layer 2 and is useful for network discovery and troubleshooting. CDP is Cisco proprietary, while LLDP is an industry-standard alternative that can operate between devices from different vendors. CDP should be disabled on interfaces where discovery information should not be exposed, particularly toward untrusted networks.<\/span><\/p>\n<h3><b>Question 204<\/b><\/h3>\n<p><b>Which routing table code identifies a directly connected network on a Cisco router?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">D<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The letter <\/span><span style=\"font-weight: 400;\">C<\/span><span style=\"font-weight: 400;\"> in a Cisco IPv4 routing table indicates a directly connected network. When an interface is configured with an IP address and is operational, the router normally installs the connected network into its routing table. Cisco also uses the code <\/span><span style=\"font-weight: 400;\">L<\/span><span style=\"font-weight: 400;\"> for a local route representing the specific IP address assigned to an interface. <\/span><span style=\"font-weight: 400;\">S<\/span><span style=\"font-weight: 400;\"> represents a static route, <\/span><span style=\"font-weight: 400;\">O<\/span><span style=\"font-weight: 400;\"> represents an OSPF-learned route, and <\/span><span style=\"font-weight: 400;\">D<\/span><span style=\"font-weight: 400;\"> commonly represents an EIGRP route. Understanding routing table codes helps administrators quickly identify how a route was learned.<\/span><\/p>\n<h3><b>Question 205<\/b><\/h3>\n<p><b>What is the purpose of a router&#8217;s loopback interface?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It provides a logical interface that remains independent of physical interface status<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It automatically assigns DHCP addresses<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It creates a Layer 2 trunk<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It disables routing protocols<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A loopback interface is a logical interface that is not tied to a physical network connection. Because it remains operational as long as the router itself is functioning, it can provide a stable address for management, routing protocol identification, monitoring, or testing. OSPF and other routing protocols can use a loopback address when selecting a router ID. Loopback interfaces are configured similarly to physical interfaces but do not require physical cabling. They are particularly useful when administrators need a predictable address that is less affected by individual interface failures.<\/span><\/p>\n<h3><b>Question 206<\/b><\/h3>\n<p><b>Which device typically separates broadcast domains by default?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Layer 2 switch<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hub<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Router<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Repeater<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A router separates broadcast domains because routers do not normally forward Layer 2 broadcast frames between interfaces. Each router interface represents a different Layer 3 network, creating a separate broadcast domain. A traditional Layer 2 switch forwards broadcasts throughout a VLAN, so all devices in the same VLAN remain within the same broadcast domain. Hubs and repeaters also do not provide Layer 3 broadcast-domain separation. Routers therefore play an important role in controlling broadcast traffic and enabling communication between different IP networks through Layer 3 routing.<\/span><\/p>\n<h3><b>Question 207<\/b><\/h3>\n<p><b>Which protocol is commonly used to securely transfer files between network devices using SSH encryption?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TFTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">FTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SCP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HTTP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Secure Copy Protocol, or SCP, transfers files securely using the SSH protocol. Because SCP provides encryption and authentication through SSH, it is safer than traditional protocols such as FTP and TFTP, which do not provide the same level of secure transport by default. Network administrators can use SCP to securely copy configuration files, software images, or other files between Cisco devices and management systems. TFTP is simple and commonly used for basic network file transfers, but it does not encrypt the transferred information or provide strong authentication.<\/span><\/p>\n<h3><b>Question 208<\/b><\/h3>\n<p><b>What is the main purpose of the IPv4 Address Resolution Protocol (ARP)?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To map an IPv4 address to a MAC address<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To assign an IPv4 address automatically<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To calculate the shortest routing path<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To encrypt Ethernet frames<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">ARP is used in IPv4 networks to determine the MAC address associated with a known IPv4 address on the local network. When a device needs to send an Ethernet frame to a local IPv4 destination but does not know the destination MAC address, it sends an ARP request. The device owning that IPv4 address responds with an ARP reply containing its MAC address. The sender can then place that MAC address in the Ethernet frame. ARP is therefore essential for IPv4 communication across Ethernet-based local networks.<\/span><\/p>\n<h3><b>Question 209<\/b><\/h3>\n<p><b>Which command displays a summary of IPv4 interfaces, their IP addresses, and their operational status on a Cisco router?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show interfaces<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show ip interface brief<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show ip route<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show running-config<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show ip interface brief<\/span><span style=\"font-weight: 400;\"> command provides a concise summary of router or Layer 3 switch interfaces. Its output commonly includes interface names, assigned IP addresses, and the status and protocol states of each interface. This makes the command especially useful for quickly identifying interfaces that are administratively down, physically down, or operational. The full <\/span><span style=\"font-weight: 400;\">show interfaces<\/span><span style=\"font-weight: 400;\"> command provides much more detailed information, while <\/span><span style=\"font-weight: 400;\">show ip route<\/span><span style=\"font-weight: 400;\"> displays routing information and <\/span><span style=\"font-weight: 400;\">show running-config<\/span><span style=\"font-weight: 400;\"> displays the active configuration. For quick interface troubleshooting, <\/span><span style=\"font-weight: 400;\">show ip interface brief<\/span><span style=\"font-weight: 400;\"> is highly useful.<\/span><\/p>\n<h3><b>Question 210<\/b><\/h3>\n<p><b>Which IPv6 address type is designed for communication with the nearest member of a group according to routing information?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Unicast<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Broadcast<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Anycast<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Multicast<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">An IPv6 anycast address is assigned to multiple interfaces, usually on different devices, and packets sent to that address are delivered to the topologically nearest interface according to the routing system. Anycast can be useful for services that should be reachable from multiple distributed locations. IPv6 does not use traditional broadcast addresses. Unicast identifies a single interface, while multicast delivers traffic to multiple members of a multicast group. Understanding these IPv6 address types is important because IPv6 uses different communication mechanisms than traditional IPv4 networks.<\/span><\/p>\n<h3><b>Question 211<\/b><\/h3>\n<p><b>Which Cisco command saves the current running configuration so that it can be restored after a device reload?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">copy startup-config running-config<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">copy running-config startup-config<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">save running-config<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">write memory startup<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The command <\/span><span style=\"font-weight: 400;\">copy running-config startup-config<\/span><span style=\"font-weight: 400;\"> saves the active configuration in RAM to the startup configuration stored in nonvolatile memory. The startup configuration is loaded when the device boots. If an administrator makes configuration changes but does not save them, those changes can be lost after a reload or power failure. The running configuration represents the current active settings, while the startup configuration represents the saved configuration used during boot. Regularly saving important configuration changes helps prevent accidental loss of network device settings.<\/span><\/p>\n<h3><b>Question 212<\/b><\/h3>\n<p><b>Which wireless frequency band generally provides greater range and better wall penetration but may experience more interference from household devices?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">5 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">6 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">2.4 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">60 GHz<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The 2.4 GHz wireless band generally provides longer range and better penetration through walls than higher-frequency Wi-Fi bands. However, it is more susceptible to interference because many household and wireless devices operate in or near this frequency range. The 5 GHz band typically offers more available channels and higher performance over shorter distances, while newer 6 GHz Wi-Fi provides additional spectrum where supported. Wireless network design therefore requires balancing coverage, capacity, interference, and client compatibility when selecting appropriate frequency bands.<\/span><\/p>\n<h3><b>Question 213<\/b><\/h3>\n<p><b>What is the main purpose of a default gateway configured on an end device?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To identify the device&#8217;s MAC address<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To provide a path to remote networks<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To assign the device&#8217;s hostname<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">To provide DNS resolution<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A default gateway provides an end device with a Layer 3 path to destinations outside its local subnet. When the destination IP address is not part of the device&#8217;s directly connected network, the device forwards the packet toward its configured default gateway, which is typically a router or Layer 3 switch interface. The gateway then determines how to reach the remote network. The default gateway does not provide DNS resolution, assign hostnames, or identify MAC addresses. Proper gateway configuration is essential for communication beyond the local subnet.<\/span><\/p>\n<h3><b>Question 214<\/b><\/h3>\n<p><b>Which protocol is commonly used to monitor network devices and collect management information from them?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SNMP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SMTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SSH<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SCP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Simple Network Management Protocol, or SNMP, is commonly used for monitoring and managing network devices. An SNMP management system can query devices for information such as interface statistics, device status, CPU utilization, and other operational data. SNMP uses a manager-agent architecture in many deployments. SNMPv3 provides stronger security features than older versions by supporting authentication and encryption. SSH provides secure interactive access, SCP provides secure file transfer, and SMTP is associated with email delivery. SNMP is therefore especially useful for centralized network monitoring and performance management.<\/span><\/p>\n<h3><b>Question 215<\/b><\/h3>\n<p><b>Which STP port role provides the best path from a non-root switch toward the root bridge?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Designated port<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Root port<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disabled port<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Alternate VLAN port<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The root port is the port on a non-root switch that provides the best path toward the STP root bridge. Each non-root switch normally selects one root port based on the lowest path cost to the root. If multiple paths have equal cost, additional tie-breakers such as the upstream bridge ID and port ID are considered. The root bridge itself does not have a root port because it is the reference point for the spanning-tree topology. Root ports normally operate in a forwarding state when STP has converged.<\/span><\/p>\n<h3><b>Question 216<\/b><\/h3>\n<p><b>Which NAT method maps one private IPv4 address to one specific public IPv4 address?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic NAT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PAT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static NAT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Default NAT<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Static NAT creates a permanent one-to-one mapping between an inside local private IPv4 address and an inside global public IPv4 address. This is useful when an internal device, such as a server, needs to be consistently reachable using a specific public address. Dynamic NAT also translates private addresses to public addresses but typically uses a pool and creates temporary mappings. PAT allows many private hosts to share one or a small number of public addresses by using transport-layer port numbers. Static NAT is therefore appropriate for fixed one-to-one mappings.<\/span><\/p>\n<h3><b>Question 217<\/b><\/h3>\n<p><b>Which command can be used to verify the OSPF neighbors currently known by a Cisco router?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show ospf neighbors<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show ip ospf neighbor<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show ip route ospf<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">show interfaces ospf<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show ip ospf neighbor<\/span><span style=\"font-weight: 400;\"> command displays OSPF neighbor relationships established by a Cisco router. The output can include the neighbor router ID, priority, state, dead timer, and interface through which the neighbor is reachable. This command is especially useful when troubleshooting OSPF adjacency problems. If an expected neighbor does not appear, administrators can investigate issues such as mismatched areas, authentication, network types, timers, IP addressing, or interface status. The command provides direct visibility into OSPF neighbor relationships rather than simply showing learned routes.<\/span><\/p>\n<h3><b>Question 218<\/b><\/h3>\n<p><b>Which security mechanism requires devices or users to authenticate before gaining access to a switch port?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">802.1X<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">802.1Q<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">802.3af<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">802.11ax<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">IEEE 802.1X provides port-based network access control. It can require a user or endpoint to authenticate before the switch allows normal network access through the port. An 802.1X deployment commonly includes a supplicant on the endpoint, an authenticator such as a switch, and an authentication server such as a RADIUS server. This mechanism helps prevent unauthorized devices from obtaining network connectivity simply by plugging into an available switch port. The other standards serve different purposes, including VLAN tagging, Power over Ethernet, and wireless networking.<\/span><\/p>\n<h3><b>Question 219<\/b><\/h3>\n<p><b>Which ICMP message is commonly returned when a router&#8217;s IP packet TTL reaches zero while traveling through the network?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Echo Reply<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Destination Unreachable<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Time Exceeded<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Redirect<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">An ICMP Time Exceeded message is generated when the IPv4 TTL field reaches zero before a packet reaches its destination. Each router that forwards an IPv4 packet normally decreases its TTL by one. If the value becomes zero, the router discards the packet and can send an ICMP Time Exceeded message back to the source. Traceroute relies on this behavior to identify routers along a path. Echo Reply is associated with successful ping responses, while Destination Unreachable indicates that a destination or service cannot be reached.<\/span><\/p>\n<h3><b>Question 220<\/b><\/h3>\n<p><b>Which data modeling language is commonly used with NETCONF and RESTCONF to define the structure of network configuration and operational data?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">JSON<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">XML<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">YANG<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">YAML<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation<\/b><\/p>\n<p><span style=\"font-weight: 400;\">YANG is a data modeling language designed to represent configuration and operational data used by network management protocols such as NETCONF and RESTCONF. It defines structured models describing the data that network devices expose and accept. NETCONF commonly uses XML to encode data, while RESTCONF commonly works with XML or JSON representations. YANG itself is not simply a data-encoding format; it defines the structure and relationships of the data. Using standardized models helps network automation systems interact with devices in a consistent and predictable manner.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>View Full\u00a0Cisco 200-301 Exam Dumps\u00a0and Practice Test Dumps. &nbsp; Question 201 Which subnet mask provides 126 usable IPv4 host addresses in a subnet? 255.255.255.128 255.255.255.192 255.255.255.224 255.255.255.240 Correct Answer: 1 Explanation A subnet that requires 126 usable IPv4 host addresses needs 128 total addresses because two addresses are normally reserved for the network and broadcast [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/11881"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=11881"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/11881\/revisions"}],"predecessor-version":[{"id":11882,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/11881\/revisions\/11882"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=11881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=11881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=11881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}