{"id":22551,"date":"2026-09-26T05:55:59","date_gmt":"2026-09-26T05:55:59","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=22551"},"modified":"2026-09-26T05:55:59","modified_gmt":"2026-09-26T05:55:59","slug":"cisco-100-140-practice-test-questions-and-exam-dumps-part-19-q361-380","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/cisco-100-140-practice-test-questions-and-exam-dumps-part-19-q361-380\/","title":{"rendered":"Cisco 100-140 Practice Test Questions and Exam Dumps Part 19 Q361-380"},"content":{"rendered":"<h1><b>View Full <\/b><a href=\"https:\/\/www.examlabs.com\/100-140-exam-dumps\"><b>Cisco 100-140 Exam Dumps<\/b><\/a><b> and Practice Test Dumps<\/b><\/h1>\n<p>&nbsp;<\/p>\n<p><b>Question 361. Which Cisco IOS command displays the IPv4 routing table on a router?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> show interfaces<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show arp<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show ip route<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show vlan brief<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. show ip route<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show ip route<\/span><span style=\"font-weight: 400;\"> command displays the IPv4 routing table maintained by a Cisco router or Layer 3 device. The routing table contains routes learned through connected interfaces, static configuration, and dynamic routing protocols. It also provides information about route sources, administrative distance, metrics, next-hop addresses, and outgoing interfaces. <\/span><span style=\"font-weight: 400;\">show interfaces<\/span><span style=\"font-weight: 400;\"> provides interface statistics and status, <\/span><span style=\"font-weight: 400;\">show arp<\/span><span style=\"font-weight: 400;\"> displays IPv4-to-MAC mappings, and <\/span><span style=\"font-weight: 400;\">show vlan brief<\/span><span style=\"font-weight: 400;\"> summarizes VLAN information on a switch. Therefore, <\/span><span style=\"font-weight: 400;\">show ip route<\/span><span style=\"font-weight: 400;\"> is the appropriate command for examining IPv4 routes and determining how the device will forward packets toward a destination network.<\/span><\/p>\n<p><b>Question 362. Which IPv4 address is a valid host address in the 192.168.10.0\/24 network?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.10.25<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.11.25<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.10.0<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.10.255<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1. 192.168.10.25<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">In the <\/span><span style=\"font-weight: 400;\">192.168.10.0\/24<\/span><span style=\"font-weight: 400;\"> network, the subnet mask is <\/span><span style=\"font-weight: 400;\">255.255.255.0<\/span><span style=\"font-weight: 400;\">. The network address is <\/span><span style=\"font-weight: 400;\">192.168.10.0<\/span><span style=\"font-weight: 400;\">, and the broadcast address is <\/span><span style=\"font-weight: 400;\">192.168.10.255<\/span><span style=\"font-weight: 400;\">. The usable host range is therefore <\/span><span style=\"font-weight: 400;\">192.168.10.1<\/span><span style=\"font-weight: 400;\"> through <\/span><span style=\"font-weight: 400;\">192.168.10.254<\/span><span style=\"font-weight: 400;\">. The address <\/span><span style=\"font-weight: 400;\">192.168.10.25<\/span><span style=\"font-weight: 400;\"> falls within that usable range and is a valid host address. <\/span><span style=\"font-weight: 400;\">192.168.11.25<\/span><span style=\"font-weight: 400;\"> belongs to a different \/24 network, while the network and broadcast addresses are not normally assigned to individual hosts. Therefore, <\/span><span style=\"font-weight: 400;\">192.168.10.25<\/span><span style=\"font-weight: 400;\"> is the valid host address among the choices.<\/span><\/p>\n<p><b>Question 363. Which protocol is responsible for translating domain names such as example.com into IP addresses?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> SNMP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> NTP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DNS<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 4. DNS<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The Domain Name System (DNS) translates human-readable domain names into IP addresses that network devices can use for communication. For example, a DNS lookup can resolve a hostname such as <\/span><span style=\"font-weight: 400;\">example.com<\/span><span style=\"font-weight: 400;\"> to an IPv4 or IPv6 address. This allows users and applications to use memorable names instead of numerical addresses. DHCP is primarily used to provide hosts with network configuration information, SNMP supports network management, and NTP synchronizes device clocks. DNS uses a distributed hierarchical database and can provide different record types for various services and address families. Therefore, DNS is the protocol responsible for domain-name resolution.<\/span><\/p>\n<p><b>Question 364. What is the primary function of a router in an IP network?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> Learn Ethernet MAC addresses only<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Forward packets between different IP networks<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Provide physical Ethernet connectivity only<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Convert hostnames into IP addresses<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2. Forward packets between different IP networks<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A router connects different Layer 3 networks and forwards IP packets toward their destinations based on information in its routing table. When a packet arrives, the router examines the destination IP address, determines the best matching route, and forwards the packet through the appropriate interface or next hop. Switches primarily forward Ethernet frames within Layer 2 networks, while DNS performs name resolution. Although routers can provide additional services such as DHCP relay, NAT, and access control, their fundamental role is Layer 3 packet forwarding between networks. Therefore, forwarding packets between different IP networks is the primary function of a router.<\/span><\/p>\n<p><b>Question 365. Which subnet mask corresponds to an IPv4 \/28 prefix?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> 255.255.255.240<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 255.255.255.224<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 255.255.255.192<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 255.255.255.248<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1. 255.255.255.240<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A <\/span><span style=\"font-weight: 400;\">\/28<\/span><span style=\"font-weight: 400;\"> IPv4 prefix contains 28 network bits and 4 host bits. The first three octets are fully dedicated to the network, represented as <\/span><span style=\"font-weight: 400;\">255.255.255<\/span><span style=\"font-weight: 400;\">, while four network bits in the final octet produce the value <\/span><span style=\"font-weight: 400;\">240<\/span><span style=\"font-weight: 400;\">. Therefore, the correct subnet mask is <\/span><span style=\"font-weight: 400;\">255.255.255.240<\/span><span style=\"font-weight: 400;\">. A \/28 subnet contains 16 total IPv4 addresses, with 14 normally usable host addresses in a traditional subnet. A <\/span><span style=\"font-weight: 400;\">\/27<\/span><span style=\"font-weight: 400;\"> uses <\/span><span style=\"font-weight: 400;\">255.255.255.224<\/span><span style=\"font-weight: 400;\">, a <\/span><span style=\"font-weight: 400;\">\/26<\/span><span style=\"font-weight: 400;\"> uses <\/span><span style=\"font-weight: 400;\">255.255.255.192<\/span><span style=\"font-weight: 400;\">, and a <\/span><span style=\"font-weight: 400;\">\/29<\/span><span style=\"font-weight: 400;\"> uses <\/span><span style=\"font-weight: 400;\">255.255.255.248<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><b>Question 366. Which Cisco IOS command can be used to verify the software version and hardware information of a device?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> show vlan brief<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show arp<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show version<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show mac address-table<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. show version<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show version<\/span><span style=\"font-weight: 400;\"> command provides important information about a Cisco device, including the IOS or IOS XE software version, device uptime, hardware platform, memory information, interfaces, and other system details. It is commonly used during troubleshooting, inventory checks, and software verification. <\/span><span style=\"font-weight: 400;\">show vlan brief<\/span><span style=\"font-weight: 400;\"> summarizes VLAN configuration, <\/span><span style=\"font-weight: 400;\">show arp<\/span><span style=\"font-weight: 400;\"> displays IPv4-to-MAC address mappings, and <\/span><span style=\"font-weight: 400;\">show mac address-table<\/span><span style=\"font-weight: 400;\"> displays Layer 2 forwarding information. Because <\/span><span style=\"font-weight: 400;\">show version<\/span><span style=\"font-weight: 400;\"> combines software and hardware details in a single output, it is the appropriate command for verifying the operating software and basic hardware information of a Cisco device.<\/span><\/p>\n<p><b>Question 367. Which IPv4 address represents the loopback address commonly used to test the local TCP\/IP stack?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> 169.254.1.1<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 10.0.0.1<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 127.0.0.1<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.1.1<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 4. 127.0.0.1<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The IPv4 address <\/span><span style=\"font-weight: 400;\">127.0.0.1<\/span><span style=\"font-weight: 400;\"> is the commonly used loopback address for testing the local TCP\/IP stack. Addresses in the <\/span><span style=\"font-weight: 400;\">127.0.0.0\/8<\/span><span style=\"font-weight: 400;\"> range are reserved for loopback functions, and <\/span><span style=\"font-weight: 400;\">127.0.0.1<\/span><span style=\"font-weight: 400;\"> is the most familiar representation. Traffic sent to the loopback address remains within the local host rather than being transmitted through a physical network interface. This makes it useful for determining whether the local IP stack is functioning. The <\/span><span style=\"font-weight: 400;\">169.254.0.0\/16<\/span><span style=\"font-weight: 400;\"> range is associated with link-local addressing, while <\/span><span style=\"font-weight: 400;\">10.0.0.0\/8<\/span><span style=\"font-weight: 400;\"> and <\/span><span style=\"font-weight: 400;\">192.168.0.0\/16<\/span><span style=\"font-weight: 400;\"> are private address ranges.<\/span><\/p>\n<p><b>Question 368. Which switching method begins forwarding a frame before the entire frame has been received?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> Store-and-forward<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Cut-through<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Fragment-free routing<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Process switching<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2. Cut-through<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cut-through switching begins forwarding a frame after reading enough of the frame to determine its destination, rather than waiting for the complete frame to arrive. This can reduce forwarding latency because transmission begins earlier. Store-and-forward switching, by contrast, receives the entire frame before forwarding it and can therefore perform a complete frame check before transmission. Process switching is a Layer 3 packet-forwarding method rather than an Ethernet switching method. The choice of switching method involves a trade-off between latency and error checking. Therefore, cut-through switching is the method that can begin forwarding before the complete frame has been received.<\/span><\/p>\n<p><b>Question 369. Which Cisco protocol allows a device to discover information about directly connected Cisco neighbors?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> CDP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DNS<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> FTP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. CDP<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cisco Discovery Protocol (CDP) allows Cisco devices to discover information about directly connected Cisco neighbors. CDP can provide details such as the neighboring device identifier, platform, capabilities, local interface, and remote port. This information can be especially useful for documenting network topology and troubleshooting physical connections. CDP is generally enabled by default on many Cisco platforms, although configuration and security requirements may vary. DNS provides name resolution, DHCP provides network configuration, and FTP transfers files. Therefore, CDP is the Cisco protocol specifically designed for discovering information about directly connected Cisco devices.<\/span><\/p>\n<p><b>Question 370. Which command displays the VLANs configured on a Cisco switch along with their associated access ports?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> show ip route<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show interfaces<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show vlan brief<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show cdp neighbors<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. show vlan brief<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show vlan brief<\/span><span style=\"font-weight: 400;\"> command provides a concise summary of VLANs configured on a Cisco switch. Its output commonly includes the VLAN ID, VLAN name, VLAN status, and access ports assigned to each VLAN. This makes it useful for quickly verifying VLAN creation and access-port membership. <\/span><span style=\"font-weight: 400;\">show ip route<\/span><span style=\"font-weight: 400;\"> displays routing information, <\/span><span style=\"font-weight: 400;\">show interfaces<\/span><span style=\"font-weight: 400;\"> provides interface-level details, and <\/span><span style=\"font-weight: 400;\">show cdp neighbors<\/span><span style=\"font-weight: 400;\"> displays information about directly connected Cisco devices. When troubleshooting VLAN assignment or checking whether an access port belongs to the expected VLAN, <\/span><span style=\"font-weight: 400;\">show vlan brief<\/span><span style=\"font-weight: 400;\"> is an appropriate command to use.<\/span><\/p>\n<p><b>Question 371. Which IPv6 address type is used to identify a group of interfaces and deliver packets to all members of that group?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> Anycast<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Link-local<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Global unicast<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Multicast<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 4. Multicast<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">An IPv6 multicast address identifies a group of interfaces, and packets sent to that address are delivered to the members of the multicast group. IPv6 multicast uses the <\/span><span style=\"font-weight: 400;\">FF00::\/8<\/span><span style=\"font-weight: 400;\"> prefix and supports many network functions, including Neighbor Discovery and routing protocols. Anycast addresses identify multiple interfaces but deliver traffic to the nearest appropriate interface according to routing. Link-local addresses are used for communication on the local link, while global unicast addresses identify globally routable interfaces. Therefore, multicast is the IPv6 address type designed for one-to-many communication with a defined group of receiving interfaces.<\/span><\/p>\n<p><b>Question 372. Which protocol provides automatic IP address assignment to network clients?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> SSH<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> OSPF<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> CDP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1. DHCP<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Dynamic Host Configuration Protocol (DHCP) provides automatic network configuration to clients. A DHCP server can assign an IPv4 address along with a subnet mask, default gateway, DNS server information, and lease parameters. This simplifies administration because network administrators do not need to manually configure every client. SSH is used for secure remote access, OSPF is a dynamic routing protocol, and CDP discovers directly connected Cisco devices. DHCP commonly operates through a lease-based process in which clients request and renew their configuration. Therefore, DHCP is the protocol responsible for automatically assigning IP addressing information to network clients.<\/span><\/p>\n<p><b>Question 373. Which routing protocol is classified as a link-state protocol?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> RIP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> OSPF<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> ARP<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2. OSPF<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Open Shortest Path First (OSPF) is a link-state interior gateway routing protocol. OSPF routers exchange link-state information and construct a topology database representing the network. They then use the Shortest Path First algorithm to calculate routes. This differs from RIP, which is a distance-vector routing protocol that uses hop count as its primary metric. ARP is an address-resolution protocol, and DHCP provides host configuration. OSPF supports hierarchical network design through areas and can provide rapid convergence in appropriately designed networks. Therefore, OSPF is the link-state routing protocol among the listed choices.<\/span><\/p>\n<p><b>Question 374. Which command displays the IPv6 routing table on a Cisco router?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> show ip route<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show ipv6 interface<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show ipv6 route<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show arp<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. show ipv6 route<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show ipv6 route<\/span><span style=\"font-weight: 400;\"> command displays the IPv6 routing table on a Cisco router or Layer 3 device. It can show connected, local, static, and dynamically learned IPv6 routes along with information about route sources and next hops. <\/span><span style=\"font-weight: 400;\">show ip route<\/span><span style=\"font-weight: 400;\"> displays the IPv4 routing table, while <\/span><span style=\"font-weight: 400;\">show ipv6 interface<\/span><span style=\"font-weight: 400;\"> provides IPv6 configuration and operational information for interfaces. Traditional ARP is associated with IPv4 address resolution; IPv6 uses Neighbor Discovery instead. Therefore, <\/span><span style=\"font-weight: 400;\">show ipv6 route<\/span><span style=\"font-weight: 400;\"> is the correct command for examining the routes available for forwarding IPv6 packets.<\/span><\/p>\n<p><b>Question 375. What happens when a Layer 2 switch receives a frame destined for an unknown unicast MAC address within a VLAN?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> The switch drops the frame immediately<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> The switch routes the frame to another VLAN<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> The switch floods the frame out applicable ports except the incoming port<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> The switch sends the frame only to the default gateway<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. The switch floods the frame out applicable ports except the incoming port<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">When a switch receives an Ethernet frame with an unknown unicast destination MAC address, it normally floods the frame within the associated VLAN. The switch sends the frame out applicable ports except the port on which the frame was received. This behavior allows the destination device an opportunity to receive the frame while the switch learns the destination MAC address from subsequent traffic. The switch does not automatically route the frame to another VLAN or send it only to the default gateway. Once the destination MAC address is learned, future frames can normally be forwarded directly through the associated switch port.<\/span><\/p>\n<p><b>Question 376. Which technology allows multiple physical switch links to operate as one logical link?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> EtherChannel<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> NAT<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> Port security<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP snooping<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1. EtherChannel<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">EtherChannel combines multiple physical Ethernet links into a single logical link. This can provide increased aggregate bandwidth and redundancy between switches or other compatible devices. From the perspective of protocols such as STP, the bundled interfaces can be treated as one logical connection, which helps avoid treating each individual member link as a separate Layer 2 path. EtherChannel can be negotiated using technologies such as LACP or PAgP, depending on platform and configuration. NAT translates IP addresses, port security controls MAC addresses on switch ports, and DHCP snooping helps protect against unauthorized DHCP servers. Therefore, EtherChannel is the correct technology.<\/span><\/p>\n<p><b>Question 377. Which command can be used to view the saved startup configuration on a Cisco device?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> show running-config<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show startup-config<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show version<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show flash<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2. show startup-config<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">show startup-config<\/span><span style=\"font-weight: 400;\"> command displays the configuration saved in NVRAM and normally used when the device boots. It is useful for comparing the saved configuration with the active running configuration. The <\/span><span style=\"font-weight: 400;\">show running-config<\/span><span style=\"font-weight: 400;\"> command displays the configuration currently active in RAM, which may include changes that have not yet been saved. <\/span><span style=\"font-weight: 400;\">show version<\/span><span style=\"font-weight: 400;\"> provides system and software information, while <\/span><span style=\"font-weight: 400;\">show flash<\/span><span style=\"font-weight: 400;\"> displays information about files stored in flash memory. Administrators should understand the distinction between running and startup configurations because unsaved configuration changes can be lost after a reload. Therefore, <\/span><span style=\"font-weight: 400;\">show startup-config<\/span><span style=\"font-weight: 400;\"> is the appropriate command for viewing the saved configuration.<\/span><\/p>\n<p><b>Question 378. Which security feature helps protect a switch against unauthorized DHCP servers?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> PortFast<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> EtherChannel<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> DHCP snooping<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> CDP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3. DHCP snooping<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">DHCP snooping is a Layer 2 security feature that helps protect a switched network from unauthorized or rogue DHCP servers. The switch classifies interfaces as trusted or untrusted and can allow DHCP server responses only through trusted interfaces. DHCP snooping can also build a binding database containing information such as client MAC addresses, assigned IP addresses, VLANs, and switch ports. PortFast is used to accelerate spanning-tree transition on appropriate edge ports, EtherChannel bundles physical links, and CDP discovers Cisco neighbors. Therefore, DHCP snooping is the feature specifically associated with controlling and validating DHCP traffic on a switch.<\/span><\/p>\n<p><b>Question 379. Which IPv4 address range is reserved for link-local addressing when a host cannot obtain an address through DHCP?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> 10.0.0.0\/8<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 172.16.0.0\/12<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 192.168.0.0\/16<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> 169.254.0.0\/16<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 4. 169.254.0.0\/16<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The IPv4 <\/span><span style=\"font-weight: 400;\">169.254.0.0\/16<\/span><span style=\"font-weight: 400;\"> range is reserved for link-local addressing, commonly associated with Automatic Private IP Addressing (APIPA) on hosts that cannot obtain an IPv4 address through DHCP. An address from this range allows limited communication with other devices on the same local link that use compatible link-local addressing, but it is not intended for normal routed communication across an enterprise network or the public Internet. The <\/span><span style=\"font-weight: 400;\">10.0.0.0\/8<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">172.16.0.0\/12<\/span><span style=\"font-weight: 400;\">, and <\/span><span style=\"font-weight: 400;\">192.168.0.0\/16<\/span><span style=\"font-weight: 400;\"> ranges are RFC 1918 private address spaces. Therefore, <\/span><span style=\"font-weight: 400;\">169.254.0.0\/16<\/span><span style=\"font-weight: 400;\"> is the correct link-local range.<\/span><\/p>\n<p><b>Question 380. Which command is commonly used to test IP connectivity to a remote destination from a Cisco device?<\/b><\/p>\n<ol>\n<li><b><\/b><span style=\"font-weight: 400;\"> ping<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> traceroute<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show version<\/span><\/li>\n<li><b><\/b><span style=\"font-weight: 400;\"> show vlan brief<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1. ping<\/b><\/p>\n<p><b>Explanation :-<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">ping<\/span><span style=\"font-weight: 400;\"> command is commonly used to test basic IP connectivity between a Cisco device and a destination. In IPv4, traditional ping testing uses ICMP Echo Request and Echo Reply messages. A successful response indicates that the destination was reachable at the IP layer and responded to the request, although it does not guarantee that every application service on the destination is functioning. <\/span><span style=\"font-weight: 400;\">traceroute<\/span><span style=\"font-weight: 400;\"> is used to examine the Layer 3 path toward a destination, while <\/span><span style=\"font-weight: 400;\">show version<\/span><span style=\"font-weight: 400;\"> and <\/span><span style=\"font-weight: 400;\">show vlan brief<\/span><span style=\"font-weight: 400;\"> provide device or VLAN information. Therefore, <\/span><span style=\"font-weight: 400;\">ping<\/span><span style=\"font-weight: 400;\"> is the standard command for basic IP reachability testing.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>View Full Cisco 100-140 Exam Dumps and Practice Test Dumps &nbsp; Question 361. Which Cisco IOS command displays the IPv4 routing table on a router? show interfaces show arp show ip route show vlan brief Correct Answer: 3. show ip route Explanation :- The show ip route command displays the IPv4 routing table maintained by [&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\/22551"}],"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=22551"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/22551\/revisions"}],"predecessor-version":[{"id":22552,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/22551\/revisions\/22552"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=22551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=22551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=22551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}