{"id":21859,"date":"2026-09-25T07:37:09","date_gmt":"2026-09-25T07:37:09","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=21859"},"modified":"2026-09-25T07:37:09","modified_gmt":"2026-09-25T07:37:09","slug":"huawei-h12-811-practice-test-questions-and-exam-dumps-part19-q361-380","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/huawei-h12-811-practice-test-questions-and-exam-dumps-part19-q361-380\/","title":{"rendered":"Huawei H12-811 Practice Test Questions and Exam Dumps Part19 Q361-380"},"content":{"rendered":"

View Full <\/b>Huawei H12-811 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/h2>\n

 <\/p>\n

Question 361<\/b><\/h3>\n

Which field prevents an IPv4 packet from circulating indefinitely?<\/b><\/p>\n

    \n
  1. TTL<\/span><\/li>\n
  2. DSCP<\/span><\/li>\n
  3. Checksum<\/span><\/li>\n
  4. Identification<\/span><\/li>\n<\/ol>\n

    Correct Answer: 1<\/b><\/p>\n

    Explanation:<\/b><\/p>\n

    The Time to Live, or TTL, field limits how long an IPv4 packet can remain in a routed network. Each router that forwards the packet decreases its TTL value, normally by one. When the value reaches zero, the router discards the packet rather than forwarding it indefinitely. This mechanism helps prevent routing loops from consuming network resources continuously. TTL is therefore important for controlling packet lifetime across Layer 3 networks. Diagnostic tools such as traceroute can also take advantage of TTL behavior to identify intermediate routers along a path.<\/span><\/p>\n

    Question 362<\/b><\/h3>\n

    Which protocol distributes VLAN information between compatible switches?<\/b><\/p>\n

      \n
    1. STP<\/span><\/li>\n
    2. VTP<\/span><\/li>\n
    3. OSPF<\/span><\/li>\n
    4. PPP<\/span><\/li>\n<\/ol>\n

      Correct Answer: 2<\/b><\/p>\n

      Explanation:<\/b><\/p>\n

      VLAN Trunking Protocol, commonly known as VTP, is designed to distribute VLAN configuration information among compatible switches in environments that support the protocol. Instead of manually creating certain VLAN definitions on every switch, administrators can use a VTP domain to coordinate VLAN information. However, VTP behavior depends on the vendor implementation and configured operating mode. Huawei networks generally use their own VLAN management mechanisms rather than relying on Cisco-specific VTP behavior. Understanding the distinction is important when connecting equipment from different vendors and planning centralized VLAN configuration.<\/span><\/p>\n

      Question 363<\/b><\/h3>\n

      Which routing technique forwards traffic based on the most specific matching prefix?<\/b><\/p>\n

        \n
      1. Policy routing<\/span><\/li>\n
      2. Default routing<\/span><\/li>\n
      3. Longest-prefix matching<\/span><\/li>\n
      4. Equal-cost balancing<\/span><\/li>\n<\/ol>\n

        Correct Answer: 3<\/b><\/p>\n

        Explanation:<\/b><\/p>\n

        Longest-prefix matching determines which routing entry should be used when multiple routes match a destination address. The route with the most specific prefix provides the closest network match and is selected over broader prefixes. For example, a \/24 route is more specific than a \/16 route covering the same destination range. This mechanism allows routers to maintain both broad summary routes and more specific exceptions in the routing table. Longest-prefix matching is fundamental to IP forwarding because it provides a consistent method for selecting the appropriate destination path from multiple available entries.<\/span><\/p>\n

        Question 364<\/b><\/h3>\n

        Which protocol can dynamically assign IPv6 addresses using router advertisements?<\/b><\/p>\n

          \n
        1. FTP<\/span><\/li>\n
        2. SLAAC<\/span><\/li>\n
        3. SMTP<\/span><\/li>\n
        4. SNMP<\/span><\/li>\n<\/ol>\n

          Correct Answer: 2<\/b><\/p>\n

          Explanation:<\/b><\/p>\n

          Stateless Address Autoconfiguration, or SLAAC, allows IPv6 hosts to configure addresses using information received through Router Advertisement messages. A router advertises an IPv6 prefix, and the host can combine that prefix with an interface identifier to create an address. SLAAC reduces the need for manual address configuration and can operate without a conventional DHCP server for basic addressing. Hosts also learn important network information from router advertisements. Because IPv6 was designed with autoconfiguration in mind, SLAAC is a major mechanism for simplifying host deployment on IPv6-enabled networks.<\/span><\/p>\n

          Question 365<\/b><\/h3>\n

          Which Ethernet field identifies the upper-layer payload type?<\/b><\/p>\n

            \n
          1. EtherType<\/span><\/li>\n
          2. Preamble<\/span><\/li>\n
          3. FCS<\/span><\/li>\n
          4. Source MAC<\/span><\/li>\n<\/ol>\n

            Correct Answer: 1<\/b><\/p>\n

            Explanation:<\/b><\/p>\n

            The EtherType field in an Ethernet frame identifies the protocol carried in the payload. For example, a commonly used EtherType identifies IPv4, while another identifies IPv6. Switches and network devices can use this information to understand the type of Layer 3 content contained within the Ethernet frame. EtherType is distinct from the source and destination MAC addresses, which identify Layer 2 endpoints. It is also different from the Frame Check Sequence, which is used for error detection. Understanding Ethernet frame fields helps when analyzing packet captures and troubleshooting Layer 2 communication.<\/span><\/p>\n

            Question 366<\/b><\/h3>\n

            Which protocol provides centralized authentication, authorization, and accounting?<\/b><\/p>\n

              \n
            1. DNS<\/span><\/li>\n
            2. NTP<\/span><\/li>\n
            3. AAA<\/span><\/li>\n
            4. ICMP<\/span><\/li>\n<\/ol>\n

              Correct Answer: 3<\/b><\/p>\n

              Explanation:<\/b><\/p>\n

              AAA stands for Authentication, Authorization, and Accounting. It provides a framework for controlling administrative or user access to network resources. Authentication verifies who the user is, authorization determines what the user is permitted to do, and accounting records relevant activity. AAA can be implemented with protocols such as RADIUS or TACACS+ depending on the environment and requirements. Centralized AAA is useful because administrators can manage access policies consistently across multiple network devices. It also improves auditing by maintaining records of user activity and access attempts.<\/span><\/p>\n

              Question 367<\/b><\/h3>\n

              Which protocol synchronizes clocks across network devices?<\/b><\/p>\n

                \n
              1. FTP<\/span><\/li>\n
              2. NTP<\/span><\/li>\n
              3. TFTP<\/span><\/li>\n
              4. LDAP<\/span><\/li>\n<\/ol>\n

                Correct Answer: 2<\/b><\/p>\n

                Explanation:<\/b><\/p>\n

                Network Time Protocol, or NTP, synchronizes device clocks with reliable time sources across an IP network. Accurate time is important for event logging, troubleshooting, authentication systems, certificates, and many security functions. Devices can operate as NTP clients and obtain time from configured servers. A consistent time reference makes it easier to correlate events occurring across multiple routers, switches, servers, and monitoring systems. Without synchronized clocks, logs from different devices may appear out of sequence, making incident investigation and troubleshooting considerably more difficult.<\/span><\/p>\n

                Question 368<\/b><\/h3>\n

                Which Ethernet component detects transmission errors in a received frame?<\/b><\/p>\n

                  \n
                1. Preamble<\/span><\/li>\n
                2. FCS<\/span><\/li>\n
                3. EtherType<\/span><\/li>\n
                4. VLAN ID<\/span><\/li>\n<\/ol>\n

                  Correct Answer: 2<\/b><\/p>\n

                  Explanation:<\/b><\/p>\n

                  The Frame Check Sequence, or FCS, is used to detect errors in an Ethernet frame. It contains a value calculated from the frame contents by the sender. The receiving device performs a corresponding calculation and compares the result with the received FCS. If the values do not match, the frame is considered corrupted and is normally discarded. FCS provides error detection rather than error correction. Problems such as damaged cables, electromagnetic interference, or faulty interfaces can contribute to frame errors, so FCS-related statistics are useful when diagnosing physical or Layer 2 issues.<\/span><\/p>\n

                  Question 369<\/b><\/h3>\n

                  Which protocol is commonly used to transfer files securely through SSH?<\/b><\/p>\n

                    \n
                  1. SCP<\/span><\/li>\n
                  2. TFTP<\/span><\/li>\n
                  3. FTP<\/span><\/li>\n
                  4. HTTP<\/span><\/li>\n<\/ol>\n

                    Correct Answer: 1<\/b><\/p>\n

                    Explanation:<\/b><\/p>\n

                    Secure Copy Protocol, or SCP, transfers files using an SSH-based secure communication channel. Because the session is protected by SSH, transmitted credentials and file contents are not exposed as plain text across the network. SCP can be useful when administrators need to move configuration files, software packages, logs, or other data between trusted systems securely. TFTP and traditional FTP do not provide the same SSH-based protection. Secure file transfer is especially important when moving sensitive device configurations or credentials across management networks.<\/span><\/p>\n

                    Question 370<\/b><\/h3>\n

                    Which routing protocol is classified as a link-state protocol?<\/b><\/p>\n

                      \n
                    1. RIP<\/span><\/li>\n
                    2. OSPF<\/span><\/li>\n
                    3. BGP<\/span><\/li>\n
                    4. Static routing<\/span><\/li>\n<\/ol>\n

                      Correct Answer: 2<\/b><\/p>\n

                      Explanation:<\/b><\/p>\n

                      OSPF is a link-state interior gateway routing protocol. Routers running OSPF exchange link-state information and build a link-state database representing the network topology. Each router can then calculate shortest paths using the available topology information. This differs from distance-vector protocols such as RIP, which primarily exchange route information with neighboring routers. OSPF supports hierarchical designs through areas and provides faster and more scalable operation than traditional RIP in many enterprise environments. Understanding its link-state operation is essential for configuring and troubleshooting dynamic routing on Huawei devices.<\/span><\/p>\n

                      Question 371<\/b><\/h3>\n

                      Which device function converts a domain name into an IP address?<\/b><\/p>\n

                        \n
                      1. DHCP<\/span><\/li>\n
                      2. DNS<\/span><\/li>\n
                      3. ARP<\/span><\/li>\n
                      4. NTP<\/span><\/li>\n<\/ol>\n

                        Correct Answer: 2<\/b><\/p>\n

                        Explanation:<\/b><\/p>\n

                        The Domain Name System, or DNS, translates human-readable domain names into IP addresses and can also provide other types of name-related information. When a user accesses a service by hostname, a DNS resolver can query the appropriate DNS infrastructure to determine the corresponding address. This avoids requiring users to remember numerical IP addresses for every service. DNS is separate from DHCP, which provides network configuration, and ARP, which resolves local IPv4 addresses to Layer 2 addresses. Reliable DNS operation is therefore important for applications that depend on hostname-based access.<\/span><\/p>\n

                        Question 372<\/b><\/h3>\n

                        Which protocol can securely authenticate administrators using an SSH server?<\/b><\/p>\n

                          \n
                        1. Telnet<\/span><\/li>\n
                        2. Rlogin<\/span><\/li>\n
                        3. SSH<\/span><\/li>\n
                        4. FTP<\/span><\/li>\n<\/ol>\n

                          Correct Answer: 3<\/b><\/p>\n

                          Explanation:<\/b><\/p>\n

                          SSH provides secure remote access to network devices and servers by encrypting the management session. It can authenticate administrators using passwords, public-key mechanisms, or other supported authentication methods. Because SSH protects the communication channel, credentials and management commands are not exposed as plain text in transit. Telnet, by comparison, does not provide equivalent encryption and is therefore unsuitable for secure administrative access in modern environments. Network administrators commonly enable SSH on infrastructure devices so they can perform configuration and troubleshooting tasks through a protected remote management connection.<\/span><\/p>\n

                          Question 373<\/b><\/h3>\n

                          Which protocol discovers the Layer 2 address associated with an IPv4 address?<\/b><\/p>\n

                            \n
                          1. ARP<\/span><\/li>\n
                          2. DNS<\/span><\/li>\n
                          3. DHCP<\/span><\/li>\n
                          4. NTP<\/span><\/li>\n<\/ol>\n

                            Correct Answer: 1<\/b><\/p>\n

                            Explanation:<\/b><\/p>\n

                            Address Resolution Protocol, or ARP, maps an IPv4 address to the corresponding MAC address on a local network. When a host needs to send traffic to another local IPv4 destination but does not know its Layer 2 address, it can broadcast an ARP request. The device owning the requested IPv4 address responds with its MAC address. The sender can then place that MAC address into the Ethernet frame. ARP operates within the local broadcast domain and is distinct from DNS, which resolves hostnames, and DHCP, which provides configuration information.<\/span><\/p>\n

                            Question 374<\/b><\/h3>\n

                            Which technology provides gateway redundancy using a virtual IP address?<\/b><\/p>\n

                              \n
                            1. VRRP<\/span><\/li>\n
                            2. STP<\/span><\/li>\n
                            3. LACP<\/span><\/li>\n
                            4. GRE<\/span><\/li>\n<\/ol>\n

                              Correct Answer: 1<\/b><\/p>\n

                              Explanation:<\/b><\/p>\n

                              Virtual Router Redundancy Protocol, or VRRP, provides gateway redundancy by allowing multiple routers to share a virtual IP address. One device operates as the active master while another can take over if the active device becomes unavailable. Hosts use the virtual gateway address rather than depending directly on one physical router. This design improves gateway availability because a single router failure does not necessarily interrupt communication for all connected clients. VRRP is commonly used in enterprise networks where uninterrupted access to the default gateway is important.<\/span><\/p>\n

                              Question 375<\/b><\/h3>\n

                              Which TCP mechanism regulates the amount of unacknowledged data sent?<\/b><\/p>\n

                                \n
                              1. Sliding window<\/span><\/li>\n
                              2. VLAN tagging<\/span><\/li>\n
                              3. Route poisoning<\/span><\/li>\n
                              4. Address resolution<\/span><\/li>\n<\/ol>\n

                                Correct Answer: 1<\/b><\/p>\n

                                Explanation:<\/b><\/p>\n

                                TCP uses a sliding-window mechanism to control how much data can be transmitted before acknowledgments are required. This supports efficient communication while preventing a sender from overwhelming the receiving host. The advertised receive window provides information about how much additional data the receiver can accept. TCP also uses congestion-control mechanisms to respond to network conditions. Window-based flow control is therefore an important part of reliable transport operation. Understanding TCP windows helps explain throughput limitations, packet transmission behavior, and performance changes observed during network troubleshooting.<\/span><\/p>\n

                                Question 376<\/b><\/h3>\n

                                Which protocol can advertise routes between autonomous systems?<\/b><\/p>\n

                                  \n
                                1. OSPF<\/span><\/li>\n
                                2. RIP<\/span><\/li>\n
                                3. BGP<\/span><\/li>\n
                                4. STP<\/span><\/li>\n<\/ol>\n

                                  Correct Answer: 3<\/b><\/p>\n

                                  Explanation:<\/b><\/p>\n

                                  Border Gateway Protocol, or BGP, is the primary routing protocol used to exchange routing information between autonomous systems. It is classified as an exterior gateway protocol and uses path attributes to support policy-based route selection. BGP is widely used by service providers, large enterprises, and organizations with multiple autonomous system relationships. Unlike interior routing protocols that primarily optimize paths within one administrative domain, BGP can apply routing policies based on attributes and business requirements. Understanding BGP is important when networks need external connectivity or exchange routes across administrative boundaries.<\/span><\/p>\n

                                  Question 377<\/b><\/h3>\n

                                  Which IPv4 address is used to test a host’s own TCP\/IP stack?<\/b><\/p>\n

                                    \n
                                  1. 0.0.0.0<\/span><\/li>\n
                                  2. 127.0.0.1<\/span><\/li>\n
                                  3. 255.255.255.255<\/span><\/li>\n
                                  4. 169.254.1.1<\/span><\/li>\n<\/ol>\n

                                    Correct Answer: 2<\/b><\/p>\n

                                    Explanation:<\/b><\/p>\n

                                    The IPv4 address 127.0.0.1 is the commonly used loopback address for testing communication within the local host. Traffic sent to this address is handled internally rather than transmitted onto a physical network. It allows administrators and applications to verify that the host’s TCP\/IP software stack is functioning. The entire 127.0.0.0\/8 block is reserved for loopback purposes, although 127.0.0.1 is the most familiar address. Testing the loopback interface can help distinguish local protocol-stack problems from issues involving physical interfaces, switches, routers, or external connectivity.<\/span><\/p>\n

                                    Question 378<\/b><\/h3>\n

                                    Which protocol is primarily used for monitoring network devices?<\/b><\/p>\n

                                      \n
                                    1. SNMP<\/span><\/li>\n
                                    2. SMTP<\/span><\/li>\n
                                    3. SIP<\/span><\/li>\n
                                    4. SMB<\/span><\/li>\n<\/ol>\n

                                      Correct Answer: 1<\/b><\/p>\n

                                      Explanation:<\/b><\/p>\n

                                      Simple Network Management Protocol, or SNMP, is commonly used to monitor and manage network devices. An SNMP manager can collect information such as interface status, traffic counters, CPU utilization, and other operational statistics from supported devices. SNMP can also support notifications when configured events occur. Different SNMP versions provide different security capabilities, with SNMPv3 offering stronger authentication and privacy features than older versions. Centralized monitoring based on SNMP helps administrators observe infrastructure health, identify abnormal behavior, and maintain historical performance information across routers, switches, and other network equipment.<\/span><\/p>\n

                                      Question 379<\/b><\/h3>\n

                                      Which IPv4 address represents the limited broadcast destination?<\/b><\/p>\n

                                        \n
                                      1. 224.0.0.1<\/span><\/li>\n
                                      2. 255.255.255.255<\/span><\/li>\n
                                      3. 192.168.255.255<\/span><\/li>\n
                                      4. 127.255.255.255<\/span><\/li>\n<\/ol>\n

                                        Correct Answer: 2<\/b><\/p>\n

                                        Explanation:<\/b><\/p>\n

                                        The IPv4 address 255.255.255.255 represents the limited broadcast address. A packet sent to this destination is intended for all IPv4 hosts on the local network segment. Routers do not normally forward limited broadcast traffic between interfaces, which prevents such broadcasts from spreading throughout routed networks. Limited broadcasts are useful in certain local discovery and configuration processes. This address differs from a directed broadcast, which targets all hosts within a particular subnet. Understanding broadcast address types is important when troubleshooting IPv4 discovery behavior and analyzing network traffic.<\/span><\/p>\n

                                        Question 380<\/b><\/h3>\n

                                        Which mechanism distributes traffic across multiple equal-cost routes?<\/b><\/p>\n

                                          \n
                                        1. Route filtering<\/span><\/li>\n
                                        2. ECMP<\/span><\/li>\n
                                        3. Port security<\/span><\/li>\n
                                        4. VLAN translation<\/span><\/li>\n<\/ol>\n

                                          Correct Answer: 2<\/b><\/p>\n

                                          Explanation:<\/b><\/p>\n

                                          Equal-Cost Multi-Path, or ECMP, allows a router to use multiple routes that have equivalent routing cost toward the same destination. Instead of selecting only one path, the device can distribute traffic across available equal-cost paths according to its forwarding algorithm. ECMP can improve link utilization and provide additional resilience because traffic has more than one available path. It is commonly associated with dynamic routing environments where several paths have equivalent metrics. Proper network design is required to ensure that equal-cost routes provide consistent connectivity and do not introduce asymmetric or unexpected forwarding behavior.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Huawei H12-811 Exam Dumps and Practice Test Dumps   Question 361 Which field prevents an IPv4 packet from circulating indefinitely? TTL DSCP Checksum Identification Correct Answer: 1 Explanation: The Time to Live, or TTL, field limits how long an IPv4 packet can remain in a routed network. Each router that forwards the packet […]<\/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\/21859"}],"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=21859"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/21859\/revisions"}],"predecessor-version":[{"id":21860,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/21859\/revisions\/21860"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=21859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=21859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=21859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}