HCIP-Datacom-Advanced Routing & Switching Technology v1.0 (H12-831)

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Total 235 questions

During the process of viewing the debug output through the SSH terminal, a lot of information pops up. Which of the following operations can make the Moni tor terminal no longer pop up the debug message?

  • A. Exit the current Monitor interface, log in to the device again using SSH to open the new Monitor interface
  • B. Open the notepad, enter undo debugging all, copy the command line, and paste it into the Monitor interface
  • C. Open the notepad, enter undo terminal monitor, copy the command line, and paste it into the monitor interface
  • D. Open the notepad, enter undo terminal debugging, copy the command line, and paste it into the Monitor interface


Answer : D

R1 executes the operation ping -a 10.1.1.1 10.5.16.2, what does this command mean?

  • A. The source IP address of the ping packet is any directly connected port address of R1
  • B. The source IFP address of the ping packet is the outgoing interface address of the optimal IP route that R1 points to 10.5.16.2, and is not 10.1.1.1
  • C. The source IP address of the ping packet is 10.1.1.1
  • D. The destination IP address of the ping packet is 10.1.1.1 and 10.5.16.2


Answer : C

Regarding the role of ping and tracert, which of the following statements is correct?

  • A. Ping detects the two-way reachability between the correct end and the one-way icmp echo request packet
  • B. Tracert must be able to trace every hop IP address from source to destination
  • C. Ping verifies the reachability from the local end to the opposite end, it does not mean that the opposite end is reachable from the local end
  • D. Tracert has the same function as ping, but the name is different


Answer : C

In the intra-domain MPLS VPN network, when the data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Regarding the description of the two layers of labels, which of the following options is wrong?

  • A. The outer label of MPLS VPN is allocated by the LDP protocol or statically, and the inner label is allocated by the MP-BGP neighbor at the correct end.
  • B. The outer label of MPLS VPNE is called the private network label, and the inner label is called the public network label.
  • C. By default, the outer label is singled out before the packet is forwarded to the last hop device
  • D. The outer label is used to correctly send the data packet to the corresponding VPN on the PE device


Answer : B

Which of the following commands can be used to view BGP VPNv4 routing and BGP private network routing information on the PE?

  • A. display bgp routing-table address-family vpnv4
  • B. display bgp vpnv4 routing-table
  • C. display bgp routing-table ipv4-family vpnv4
  • D. display vpnv4 bgp routing-table


Answer : B

Regarding BGP/MPLS IPVPN data forwarding, which of the following descriptions is wrong?

  • A. When data is transmitted on the BCP/MPLS IPVPN backbone network, it always carries two layers of labels
  • B. The inner label during data forwarding is assigned by MP-BGP
  • C. The outer label during data forwarding can be allocated by LDP
  • D. The data sent by the PE to the CE is an IPv4 packet


Answer : A

Regarding BGP/MPLS IPVPN routing interaction, which of the following descriptions is wrong?

  • A. The egress PE can send IPv4 routes to the remote CE through BGP, IGP or static routing
  • B. After the egress PE receives the VPNv4 route advertised by the ingress PE, it filters the VPNv4 route according to the RT attribute carried by the route
  • C. The exchange between PE and CE is IPv4 routing information
  • D. The ingress PE changes the IPv4 route received from CE to VPNv4 route, and saves it according to different VPN instances


Answer : A

Which of the following descriptions is wrong?

  • A. The LSP established by statically assigning labels can also be dynamically adjusted according to network topology changes without the intervention of the administrator
  • B. The principle to be followed for manual label allocation is: the value of the outgoing label of the upstream node is the value of the incoming label of the downstream node
  • C. LSP is divided into static LSP and dynamic LSP. The static LSP is manually configured by the administrator, and the dynamic LSP is dynamically established using the label protocol
  • D. Dynamic LSP is dynamically established through label distribution protocols, such as MP-BGP, RSVP-TE, LDP


Answer : A

MPLS has the concept of FEC forwarding equivalence class, so FEC cannot be allocated based on which of the following standards?

  • A. Class of Service
  • B. Fragment offset
  • C. Application Protocol
  • D. Destination Address


Answer : B

What is the flooding scope in OSPFv3 for the LSA in the entire autonomous system?

  • A. Link-LSA
  • B. As-external-LSA
  • C. Inter-Area-Prefix-LSA
  • D. Intra-Area-Prefix-LSA


Answer : D

When troubleshooting MSTP, you executed the display current-configuration command to obtain the configuration file of the device. Which of the following statements is wrong?

  • A. No matter whether the BPDU Tunnel is configured on the device or not, MSTP will not affect it correctly
  • B. Whether the MSTP port connected to the user terminal device is disabled or configured as an edge port
  • C. Check the port configuration to confirm whether the MSTP-enabled port is enabled with the protocol message sending command. Such as: bpdu enable
  • D. Check whether the port is added to the correct WLAN


Answer : A

If the display current-configuration can reach the IS-IS configuration, but there is no IS-IS configuration in the display saved-configuration, what does it mean?

  • A. The IS-IS configuration that the Flash is running is not saved to the memory
  • B. The running IS-IS configuration in the memory has been saved to the Flash
  • C. No IS-IS command is entered
  • D. The running IS-IS configuration of the memory is not saved to the Flash


Answer : D

Compared with the OSPFv2 message header, what fields are added in the OSPFv3 message header?

  • A. IPV6 Auth Type
  • B. Link ID
  • C. Instance ID
  • D. IPV6 Router ID


Answer : C

What is the default aging time of the MAC address table of Huawei switches in seconds?

  • A. 300
  • B. 500
  • C. 400
  • D. 5


Answer : A

Which of the following is wrong about DHCP Snooping?

  • A. DHCP Snooping can prevent illegal attacks by setting trusted ports (all interfaces are untrusted by default)
  • B. Enable DHCP Snooping globally, without any post parameters, the device only processes DHCPv4 messages by default
  • C. Enable the DHCP Snooping function in the interface view, then all the DHCP message command functions under the interface will take effect
  • D. Enable the DHCP Snooping function in the VLAN view, and the command function of DHCP messages belonging to the VLAN received by all interfaces of the device will take effect


Answer : A

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Total 235 questions