View Full Huawei H12-811 V2.0 Exam Dumps and Practice Test Dumps

 

Question 141.

Which Huawei VRP command displays the startup configuration that will be used after the next reboot?

1. display current-configuration
   2. display saved-configuration
   3. display version
   4. display users

Correct Answer: 2. display saved-configuration

Explanation:

The display saved-configuration command shows the configuration saved for use during device startup. This can differ from the current running configuration if recent changes have not yet been saved. Administrators should compare current and saved configurations before rebooting a device when persistence is important. The display current-configuration command shows the active configuration, while display version and display users provide different operational information.

Question 142.

Which Huawei VRP command stores the current configuration so it can be retained after a reboot?

1. commit
   2. write memory
   3. save
   4. backup active

Correct Answer: 3. save

Explanation:

The save command writes the current configuration to storage so the device can use it after restarting. This is an important administrative step because configuration changes may otherwise be lost after a reboot. Administrators should verify that the intended changes are correct before saving them. Huawei VRP uses save, whereas other networking platforms may use different commands for the same purpose.

Question 143.

Which Huawei VRP command returns directly from a lower-level configuration view to the user view?

1. quit
   2. exit
   3. end
   4. return**

Correct Answer: 4. return

Explanation:

The return command moves directly back to the user view from a lower-level configuration view. By contrast, quit normally moves back one level in the Huawei VRP command hierarchy. This distinction is useful when an administrator is several levels deep in interface, protocol, or other configuration views and wants to return quickly to the main user view.

Question 144.

Which Huawei VRP command is normally used to move back one level in the command hierarchy?

1. quit
   2. return
   3. logout
   4. back-one

Correct Answer: 1. quit

Explanation:

The quit command moves the administrator back one level in the Huawei VRP command hierarchy. For example, from an interface view it returns to the system view. The return command can jump directly back to the user view. Understanding these navigation commands makes device configuration more efficient and reduces confusion when working across multiple configuration contexts.

Question 145.

Which route type is manually configured by an administrator rather than learned automatically from a routing protocol?

1. Direct route
   2. Static route
   3. OSPF route
   4. RIP route

Correct Answer: 2. Static route

Explanation:

A static route is manually configured by an administrator and remains in the routing configuration until it is removed or becomes unusable according to the route’s conditions. Direct routes are created automatically from active Layer 3 interfaces, while OSPF and RIP routes are learned dynamically. Static routes are useful in small networks, stub networks, default routing, and situations where predictable path control is desired.

Question 146.

Which Huawei VRP command is used to configure a static IPv4 route?

1. static-route
   2. route-static
   3. ip route-static
   4. route add

Correct Answer: 3. ip route-static

Explanation:

Huawei VRP uses the ip route-static command to configure a static IPv4 route. The administrator specifies the destination network, mask or prefix length, and a next-hop address or outbound interface as appropriate. Static routing is simple and predictable but does not automatically adapt to topology changes in the way dynamic routing protocols do.

Question 147.

Which type of static route is commonly used to forward traffic for all destinations that do not have a more specific route?

1. Host route
   2. Direct route
   3. Summary route only
   4. Default route**

Correct Answer: 4. Default route

Explanation:

A default route provides a forwarding path for destinations that do not match a more specific routing-table entry. In IPv4, the default route is represented as 0.0.0.0/0. Because routers use longest-prefix matching, any more specific matching route is preferred over the default. Default routes are especially common on edge and stub routers that have a single primary path toward external networks.

Question 148.

Which IPv4 prefix represents a host route to a single specific address?

1. /32
   2. /24
   3. /16
   4. /8

Correct Answer: 1. /32

Explanation:

An IPv4 /32 prefix identifies exactly one IP address because all 32 address bits are part of the network prefix. Such routes are commonly referred to as host routes. They can be useful for management addresses, loopback interfaces, or highly specific routing decisions. A /24, /16, or /8 prefix represents a larger range of IPv4 addresses.

Question 149.

Which IPv6 prefix length is commonly used for a normal LAN subnet?

1. /32
   2. /64
   3. /96
   4. /128

Correct Answer: 2. /64

Explanation:

A /64 prefix is commonly used for standard IPv6 LAN subnets. Many IPv6 mechanisms, including Stateless Address Autoconfiguration, are designed around 64-bit interface identifiers and therefore expect /64 subnets. A /128 represents a single IPv6 address, while shorter prefixes can represent larger allocations. Consistent /64 subnetting is a fundamental design practice in many IPv6 networks.

Question 150.

Which IPv6 address type is automatically available for local-link communication and is not routed between separate links?

1. Global unicast
   2. Multicast only
   3. Link-local
   4. Anycast only

Correct Answer: 3. Link-local

Explanation:

IPv6 link-local addresses are used for communication within the local network segment and are not forwarded by routers to other links. They commonly begin with the FE80::/10 prefix. Link-local addresses are essential to IPv6 operations such as Neighbor Discovery and can also be used by routing protocols. Global unicast addresses are intended for broader routed communication.

Question 151.

Which IPv6 protocol function checks whether a newly generated address is already being used by another node on the local link?

1. NAT
   2. STP
   3. DHCPv4
   4. Duplicate Address Detection**

Correct Answer: 4. Duplicate Address Detection

Explanation:

Duplicate Address Detection, or DAD, is part of IPv6 Neighbor Discovery and checks whether an IPv6 address is already in use on the local link before the node begins using it normally. It relies on ICMPv6 Neighbor Solicitation and related messages. DAD helps prevent duplicate IPv6 addressing, which could otherwise cause unpredictable communication problems.

Question 152.

Which protocol carries IPv6 Neighbor Solicitation and Neighbor Advertisement messages?

1. ICMPv6
   2. TCP
   3. FTP
   4. SNMP

Correct Answer: 1. ICMPv6

Explanation:

IPv6 Neighbor Solicitation and Neighbor Advertisement messages are carried by ICMPv6 as part of Neighbor Discovery. These messages help nodes resolve Layer 3 addresses to Layer 2 information, test reachability, and perform Duplicate Address Detection. ICMPv6 is therefore a fundamental component of IPv6 operation and should not be blocked indiscriminately.

Question 153.

Which protocol is commonly used to securely copy files between systems over an SSH-based connection?

1. TFTP
   2. SFTP
   3. Telnet
   4. SNMP

Correct Answer: 2. SFTP

Explanation:

SFTP provides secure file transfer using an SSH-based encrypted connection. It protects authentication credentials and transferred data from straightforward interception. TFTP is lightweight but does not provide equivalent encryption or authentication. Telnet is an insecure remote terminal protocol, while SNMP is used for monitoring and management rather than file transfer.

Question 154.

Which protocol should generally be preferred over Telnet for remote command-line management?

1. FTP
   2. HTTP
   3. SSH
   4. TFTP

Correct Answer: 3. SSH

Explanation:

SSH should generally be preferred over Telnet because SSH encrypts authentication credentials and session traffic. Telnet transmits information without comparable protection, making it vulnerable to interception on untrusted networks. SSH is widely used for secure remote administration of routers, switches, servers, and other networked systems.

Question 155.

Which feature can limit which source IP addresses are permitted to access a network device for remote management?

1. DHCP pool
   2. VLAN name
   3. MAC aging only
   4. Access control list**

Correct Answer: 4. Access control list

Explanation:

An access control list, or ACL, can match traffic based on criteria such as source and destination IP addresses and can permit or deny that traffic. ACLs are commonly used to restrict management access so only trusted administrator networks can connect to SSH, Telnet, or other management services. They can also be applied in many other traffic-filtering scenarios.

Question 156.

Which type of ACL generally matches traffic based mainly on a source IPv4 address?

1. Basic ACL
   2. Advanced ACL
   3. Layer 2 loop
   4. VLAN trunk

Correct Answer: 1. Basic ACL

Explanation:

In Huawei networking terminology, a basic ACL primarily matches packets based on source IPv4 address information. This makes it suitable for simple source-based filtering, such as restricting management access from particular networks. Advanced ACLs can use more detailed criteria, including source and destination addresses, protocols, and port numbers.

Question 157.

Which type of Huawei ACL can match source and destination IP addresses as well as protocol and port information?

1. Basic ACL only
   2. Advanced ACL
   3. VLAN ACL name only
   4. STP ACL

Correct Answer: 2. Advanced ACL

Explanation:

A Huawei advanced ACL supports more detailed traffic matching than a basic ACL. It can match source and destination IP addresses, IP protocol types, and transport-layer port numbers where applicable. This allows administrators to create more granular security and traffic-control policies. Careful ACL design is important because an incorrect rule can unintentionally block legitimate network traffic.

Question 158.

Which network service translates names such as server.example.com into IP addresses?

1. DHCP
   2. NTP
   3. DNS
   4. STP

Correct Answer: 3. DNS

Explanation:

DNS translates human-readable host and domain names into IP addresses. This allows users and applications to reach services without memorizing numerical addresses. DHCP supplies IP configuration, NTP synchronizes clocks, and STP prevents Layer 2 loops. A DNS failure can cause name-based access to fail even when underlying IP connectivity remains operational.

Question 159.

Which DNS record type is commonly used to map a hostname to an IPv4 address?

1. MX
   2. PTR
   3. AAAA
   4. A**

Correct Answer: 4. A

Explanation:

A DNS A record maps a hostname to an IPv4 address. An AAAA record performs a similar function for IPv6 addresses. MX records identify mail servers for a domain, while PTR records are used for reverse DNS lookups. Understanding common DNS record types is useful when troubleshooting name resolution and network services.

Question 160.

A Huawei router can successfully ping a remote IP address but cannot resolve the remote server’s hostname. Which service should be checked first?

1. DNS
   2. STP
   3. LACP
   4. VRRP

Correct Answer: 1. DNS

Explanation:

If IP connectivity works but hostname resolution fails, DNS is the most likely service to investigate. The administrator should verify the configured DNS server, confirm reachability to it, and test whether the required DNS record exists. STP, LACP, and VRRP handle Layer 2 redundancy, link aggregation, and gateway redundancy rather than hostname resolution.