New HCIE-R&S Written Exam H12-261-ENU Questions

Getting new HCIE-R&S Written Exam H12-261-ENU Questions to prepare for HCIE R&S (Written)(Huawei Certified Internetwork Expert-Routing & Switching) exam now. New H12-261-ENU questions contain 264 real questions and answers, which are verified all of them are valid and accurate for passing HCIE-R&S Written Exam.

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We offer H12-261-ENU free questions to help you test the real H12-261-ENU HCIE-R&S Written Exam. We share 25 free questions of New HCIE-R&S Written Exam H12-261-ENU Questions as listed:

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1. What are the common methods of learning routing information for BGP? (Multiple Choice)

Importing direct routes

Importing static routes

Importing routes of BGP in other AS

Receiving the routes advertised by peers

Question 1 of 24

2. Which of the following scenarios can an AS-path-filter be used for? (Multiple Choice)

Filtering the routes received from a BGP peer based on the as-path attributes of the routes, for example, peer X.X.X.X as-path-filter import

Filtering the routes sent to a BGP peer based on the as-path attributes of the routes, for example, peer X.X.X.X as-path-filter export

Apply clauses in a route-policy

If-match clauses in a route-policy

Question 2 of 24

3. ICMFV6 uses the type field to identify packet types. Based on values of the type field, ICMPv6 packets are classified into two types: error packets and information packets.

TRUE

FALSE

Question 3 of 24

4. We can use basic community-filters or advanced community-filters to filter BGP routes.
Which of the following tools make the advanced community-filter more flexible than the basic community- filters?

IP-prefix

AS-path-filter

Regular expression

ACL

Question 4 of 24

5. Which of the following statements is true regarding OSPF adjacencies and link-state database synchronization?

Full adjacency occurs when OSPF routers reach the LOADING state.

The adjacency relationship begins in the EXSTART state.

All OSPF neighbors establish adjacencies in the FULL state with all other routers on the broadcast network.

The INU state indicates that a router has received a Hello packet from a neighbor and has seen their own ROUTERID in the Hello packet.

Question 5 of 24

6. When configuring Low Latency Queuing (LLQ), a bandwidth parameter is needed.
What does this parameter specify?

Provide a built-in policy manager to restrict the maximum available bandwidth of latency-sensitive queues during congestion.

This parameter is optional, since the LLQ will always have precedence over other queues.

This parameter should be as low as possible. It represents bandwidth which will always be reserved. It reduces the amount of bandwidth on the interface, even if it is not used by any LLQ traffic.

It represents the reference CIR to calculate the burst size of the token bucket of the built-in policer.

Question 6 of 24

7. A DHCP server can allocate an IP address based on a host's MAC address or the port of access switch the host connect to.

TRUE

FALSE

Question 7 of 24

8. According to configurations in the following figure, the two routers can establish a normal IS-IS neighbor relationship.

TRUE

FALSE

Question 8 of 24

9. An IPv6 device with the address of FC00::1 connects to the network and captures the following data packet.
What is function of the data packet?

The IPv6 device implements self-loop tests.

The router on this network segment tests the working status of the IPv6 device.

Another device on this network segment requests to resolve the Layer 2 address of the IPv6 device.

The IPv6 device checks address configuration of other devices on the network.

There are multiple routers on the network segment. One router advertises router redirect messages to the IPv6 device.

The IPv6 device requests the address of the egress router.

Question 9 of 24

10. Which of the following statements is true about the port mirroring on Huawei devices?

Huawei devices support port mirroring on the control traffic sent to the CPU.

When the observing port becomes congested, mirrored packets cannot be discarded because these packets have higher priority than service traffic.

Huawei devices support flow-based port mirroring. The mirrored traffic can be copied onto multiple observing ports.

Traffic in the RSPAN is transmitted to observing ports in multicast mode.

Question 10 of 24

11. Which access control modes are provided by NAC? (Multiple Choice)

802.1x authentication

AAA authentication

MAC address authentication

Web authentication

Question 11 of 24

12. Which of the following route selection tools is BGP-specific?

Route-policy

IP-prefix

AS-path-filter

ACL

Question 12 of 24

13. HW is an ISP providing MPLS services according to RFC 4364 standards. By using a unique route distinguisher per VRF, this L3 VPN service provides the ability for which of the following?

Unique IGP per VRF

Multi-homed access

Traffic Engineering

Overlapping IP Address space

Question 13 of 24

14. A router running RIP Version 2 has two interfaces and has received RIP routing updates from its neighbors on both interfaces. The first interface receives a routing update for network 10.1.1.0/24 with a metric of 3, the second interface also receives a routing update for network 10.1.1.0/24 with a metric of 5.
Which interface(s) will the router select to forward packets to network 10.1.1.0/24?

The router will choose the first interface because it has the lowest metric.

The router will load share across both interfaces in a weighted fashion, sending the first 3 packets out of the first interface, and the next 5 packets out of the second interface.

The router will choose the second interface because it has the highest metric.

The router will equally load share packets across both interfaces in a round robin fashion, because both are valid RIP Version 2 routes.

The router will ignore the RIP metrics and compare the preference value of each route, and choose the interface with the lowest preference value.

Question 14 of 24

15. On an MPLS VPN network, some devices maintain VPN routing information and private network label information to ensure correct forwarding of VPN packets. These devices must run not only routing protocols, but also MP-BGP and MPLS protocols.
What type are these devices?

Host

Question 15 of 24

16. Which of the following statements are true about BGP4+ configurations? (Multiple Choice)

The BGP4+ router ID is the same as the BGP4 router ID.

BGP4+ must use the local link address to specify a peer.

The next hop of BGP4+ routes does not use the local link address.

When configuring a reflector using BGP4+, role positioning of the reflector and client must be consistent with configurations of BGP4.

BGP4+ does not support a route reflector.

Question 16 of 24

17. Routers HW1 and HW2 are IP Multicast routers. These routers use (S, G) entries for multicast packet forwarding.
Which of the following address types are used in the "S" entry?

Source Specific multicast addresses

The block of administratively scoped multicast addresses

SDP / SAP addresses

Any class A, Class B, or Class C host address

GLOP addresses

Question 17 of 24

18. Devices on the HW Multicast network must send source specific multicast (SSM) messages.
What range of IP multicast addresses are reserved by the IAN A for source-specific multicast?

232.0. 0.0-232.0.0.255

233.0. 0.0-233.255.255.255

232.0. 0.0-232.255.255.255

239.0. 0.0-239.255.255.255

Question 18 of 24

19. When you perform troubleshooting on a LAN deployed with Huawei devices, you find that there is a large number of unicast frames with unknown MAC addresses.
What is the biggest risk for the switches?

Available MAC address table entries in the system will be consumed.

Increased power consumption.

Exhausts memory for buffered frames.

Exhausts available TCAM entries.

Exhausts available bandwidth.

Question 19 of 24

20. Serial 0 on a router is an OSPF network in area 1. You configure serial 0 as silent.
What is the effect of this configuration change?

OSPF will accept the routing updates from neighbors.

OSPF will form all the available adjacencies on that interface.

OSPF will not insert any of the learned routes in the local routing table.

OSPF will not form any adjacencies on that interface.

Question 20 of 24

21. Which of the following is true about Class based Weighted Fair Queuing (CBWFQ)?

CBWFQ provides delay, jitter, and bandwidth guarantees to traffic.

CBWFQ can be configured on any interface in either input or output.

CBWFQ has to be configured with the Modular QoS CLI. The resulting service-policy must be applied on output.

CBWFQ can only be configured in a hierarchical policy-map. The parent policy-map implements policing and the child policy-map implements CBWFQ.

Question 21 of 24

22. An AS-path-filter uses the regular expression ^[0-9]+$ to indicate all as-path attributes.

TRUE

FALSE

Question 22 of 24

23. Which of the following are valid IPv6 Address Types? (Multiple Choice)

Broadcast

Multicast

Anycast

Unicast

Question 23 of 24

24. In IPTV services, video streams are transmitted in multicast mode. When a user changes channels, the multicast traffic of the original TV program is still sent for a certain period. This situation worsens when the user frequently changes channels.
Which protocol is recommended to reduce the useless traffic?

IGMPv1

IGMPv2

MLD

GVRP

IGMP snooping

Question 24 of 24

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