Which of the following statements regarding an OSPF virtual link is true?

A virtual link can be used to solve the problem of a non-continuous Area 0

A virtual link uses the IP address of the outbound interface as the link address

A virtual link can be established in any area, and the virtual link belongs to the area after it is established

A virtual link with a cost of 0 is the optimal link

A Huawei router is configured to import a route into OSPF on an enterprise network. Which of the following statements about the LSA generated from the imported route are true?

The Link State ID, and Advertising Router fields can uniquely identify an LSA

The Net Mask field is set to all 0s

The Link State ID, and Advertising Router fields can uniquely identify an LSA

The Advertising Router field is set to the ASBR's Router ID

The Link State ID field is set to the destination network segment address

The router ISIS interfaces and peers are as follow. Which of the following statements is true?

The circuit-level of Eth0/0/1 on R3 is Level-1-2

IS-IS IPv4 and IS-IS IPv6 are enabled on Eth0/0/1 of R3

The circuit-level of Eth0/0/1 on R3 is Level-1-2

R3 has established a L1 adjacency on GE0/0/0

R3 is the Level-1 DIS and Level-2 DIS for the link where Eth0/0/0 resides

As shown in the following figure, R1 can connect to the Internet through R2 or R3. EBGP connections are set up between R1 and R2 and between R1 and R3.R2 and R3 reside in the same AS and advertise default routes using BGP. Which of the following methods can be used to enable traffic from R1 to the Internet to be preferentially forwarded by R2?

On R1, set the Local_Pref attribute value to 150 in the ingress direction of R2

On R2, set the Local_Pref value to 150 in the egress direction of R1

On R1, set the MED attribute value to 150 in the ingress direction of R3

On R1, set the Local_Pref attribute value to 150 in the ingress direction of R2

On R2, set the MED attribute value to 150 in the egress direction of R1

In the aggregate ipv4-address {mask | mask-length} [as-set | attribute-policy route-policy-name1 | detail-suppressed | origin-policy route-policy-name2 | suppress-policy route-policy-name3] command, multiple parameters can be used to affect the BGP summarized route and summarization result. Which of the following statements regarding this command are true?

If the origin-policy parameter is specified, only the specific routes matching route-policy are summarized.

If the attribute-policy parameter is specified, attributes of the summary route can be modified.

If the as-set parameter is specified, the AS_Path attribute of the summary route contains AS path information about all specific routes to prevent loops.

If the origin-policy parameter is specified, only the specific routes matching route-policy are summarized.

If the attribute-policy parameter is specified, attributes of the summary route can be modified.

If the suppress-policy parameter is specified, a summary route is generated. The if-match clause of the route-policy can be used to filter specific routes to be suppressed. The specific routes matching route-policy are still advertised toother BGP peers.

If the as-set parameter is specified, the AS_Path attribute of the summary route contains AS path information about all specific routes to prevent loops.

To reduce the amount of OSPF data and routing information in some areas, OSPF has special area types. Which of the following statements regarding OSPF special areas is true?

Any OSPF area can be configured as a special area

The ASBR-summary-LSA can be advertised to an NSSA

The AS-external-LSA can be advertised to a stub area

Any OSPF area can be configured as a special area

A router in a special area cannot establish an OSPF neighbor relationship with a router in a common area

Which of the following technologies can be used to improve the MPLS BGP VPN reliability?

CE dual-homing networking at the access layer

FRR for private IP routes between Pes and CEs

CE dual-homing networking at the access layer

Typically, users within a VPN only communicate with other users in the same VPN. They cannot communicate with users on the Internet or access the Internet.Many VPN sites, however, may need to access the Internet. Which of the following statements regarding interconnection between the VPN and the Internet are true?

The interconnection between the VPN and the Internet can be implemented on the PE. However, the implementation is complex and may bring security risks.The PE is vulnerable to DoS attacks from the Internet.

Configure the PE to send a default route destined for the Internet to the CE, and add a default route destined for the Internet gateway to the VPN instance routing table.

Isolating public network routes and VPN routes on the user side is simple, secure, and reliable.

The interconnection between the VPN and the Internet can be implemented on the PE. However, the implementation is complex and may bring security risks.The PE is vulnerable to DoS attacks from the Internet.

Directly connect the CE to the Internet on the user side. Each user site can independently access the Internet. That is, a default route destined for the Internet is configured on the CE of each site.

Configure the PE to send a default route destined for the Internet to the CE, and add a default route destined for the Internet gateway to the VPN instance routing table.

Isolating public network routes and VPN routes on the user side is simple, secure, and reliable.

If a multicast group has multiple receivers and the administrator enables the IGMP snooping function on the switch connected to the receivers, how do the receivers respond after receiving General Query messages from the querier?

Only the receiver whose response timer expires firstly sends a Report message

All receivers send Report messages

All receivers send Report messages only when IGMPv1 is run

All receivers send Report messages only when IGMPv2 is run

Which of the following statements regarding the Register message on a PIM-SM network are true?

The Register message is sent to the RP in unicast mode

The RP learns multicast source information from the Register message

The Register message is sent from a source DR

The Register message is sent to the RP in unicast mode

The Register message is sent from a receiver DR

The RP learns multicast source information from the Register message

In traffic policing, dual buckets at dual rates are used. The number of tokens in bucket C is TC, and the number of tokens in bucket P is TP. When a packet with a length of B is received, which of the following statements are true?

If (TP-B) and (TC-B) are larger than 0, the packet is marked green

If (TP-B) is larger than 0 and (TC-B) is smaller than 0, the packet is marked yellow

If (TP-B) and (TC-B) are smaller than 0, the packet is marked red

If (TP-B) and (TC-B) are larger than 0, the packet is marked green

If (TP-B) is larger than 0 and (TC-B) is smaller than 0, the packet is marked yellow

If (TP-B) is larger than 0 and (TC-B) is smaller than 0, the packet is marked green

If (TP-B) and (TC-B) are smaller than 0, the packet is marked red

Which of the following statements regarding FTP is true?

FTP always uses a TCP session to transmit control and data information

In FTP passive mode, the client initializes TCP control and data sessions

In FTP active mode, the server uses the PORT command to notify the client of the port through which data is transmitted

FTP always uses a TCP session to transmit control and data information

FTP always uses TCP port 20 to establish a data session and TCP port 21 to establish a control session

FTP always uses TCP port 21 to establish a data session and TCP port 20 to establish a control session

Which of following statements regarding VRRP groups in load balancing mode are true?

Hosts in the same LAN need to be configured with different virtual routers as their default gateways

At least two virtual routers need to provide forwarding services simultaneously

Multiple VRRP groups can be created on an interface of a router. The router functions as a master device of a VRRP group or a backup device of otherVRRP groups

Hosts in the same LAN need to be configured with different virtual routers as their default gateways

At least two virtual routers need to provide forwarding services simultaneously

When configuring the priority, ensure that the same router functions as the master device for three VRRP groups

Multiple VRRP groups can be created on an interface of a router. The router functions as a master device of a VRRP group or a backup device of otherVRRP groups

Assume R1 and R2 have a valid level-2 ISIS peering for IPv6 and the additional configuration shown is applied. Which of the following statements about routing entries on R2 are true?

2022:: /64 will be displayed in the IPv6 routing table.

2019:: /64 will be displayed in the IPv6 routing table.

2020:: /64 will be displayed in the IPv6 routing table.

2022:: /64 will be displayed in the IPv6 routing table.

2021:: /64 will be displayed in the IPv6 routing table.

2019:: /64 will be displayed in the IPv6 routing table.

2020:: /64 will be displayed in the IPv6 routing table.

Which of the following statements regarding MUX VLANs on Huawei switches is true?

A principal port can communicate with all ports in a MUX VLAN.

A MUX VLAN consists of principal VLANs and subordinate VLANs. Subordinate VLANs are classified into separate VLANs and isolated VLANs.

A principal port can communicate with all ports in a MUX VLAN.

MUX VLANs and super VLANs can be used together in one VLAN.

Each separate VLAN can be bound to multiple principal VLANs.

During troubleshooting for a LAN where Huawei devices are deployed, you find that there are a large number of unicast frames with unknown source MAC addresses. What is the most severe impact these unicast frames have on the switch?

The memory for buffering frames is occupied

The power consumption is increased

The available MAC address entries are consumed

The available bandwidth is consumed

The memory for buffering frames is occupied

Interface Serial 0 of a router is enabled for OSPF Area 1, Serial 0 is configured as a silent interface. What is the impact of this configuration?

The OSPF router does not establish any adjacency through this interface

The OSPF router receives updated routes from its neighbor

The OSPF router establishes an available adjacency through this interface

The OSPF router does not add the routes learned from the interface to the local routing table

The OSPF router does not establish any adjacency through this interface

Which of the following statements about IS-IS LSDB synchronization on the broadcast network, shown in the diagram, is true?

R2 functions as the DIS and periodically sends CSNPs

R2 functions as the DIS and sends Hello PDUs at an interval three times that of non-DIS routers

R1 and R3 maintain the LSDB consistency by sending PSNPs periodically

R2 functions as the DIS and does not receive PSNPs from other routers

OSPFv3 is a version of OSPF for IPv6 and is different from OSPFv2. OSPFv3 is based on links but OSPFv2 is based on network segments. Which of the following statements is false?

Except for virtual links, all OSPFv3 interfaces use a link-local address as the destination address of OSPFv3 message.

When an OSPFv3 router obtains routing information from a neighbor, it uses the link-local address of the neighbor as the next hop for packet forwarding.

Two OSPF routers on the same physical link can still establish a neighbor relationship even if no unicast IPv6 address is configured.

Two OSPF routers on the same physical link can still establish a neighbor relationship even if their IPv6 addresses are on different networks.

Except for virtual links, all OSPFv3 interfaces use a link-local address as the destination address of OSPFv3 message.

Which of the following statements regarding features of the inter-AS VPN Option C are true?

VPN routes are directly exchanged between the ingress PE and the egress PE, and the routes do not need to be stored or advertised by the intermediate devices.

The inter-AS VPN Option C mode is not applicable to scenarios where multiple Ass are spanned.

A maximum of two labels are required for packet forwarding.

ASBRs do not store VPNv4 routes or advertise VPNv4 routes to each other.

Which of the following statements correctly describe the LDP session establishment process?

The label switching router (LSR) with the larger transport address initiates a TCP connection.

After two devices receive a Keepalive message from each other, the LDP session is successfully established.

LDP Neighbor Discovery Hello messages are encapsulated using TCP with the multicast destination address of 224.0.0.2.

After the TCP connection is successfully established, the active party sends an Initialization message to negotiate with the passive party about parameters used for establishing an LDP session.

On a multicast network, in which of the following situations can multicast traffic not be forwarded?

PIM is disabled on the RPF interface

There are not any RPF route in the router

The upstream router discards the received PIM Join message

PIM is disabled on the RPF interface

On a multi-router egress network, the local router is not a DR

Which of the following statements regarding HTTPS is false?

When a user attempts to visit a website using HTTPS, if the user's browser cannot identify the digital certificate of the website, the user will be unable to access the website

A router cannot detect the viruses in HTTPS traffic through the IPS technology

HTTPS uses SSL to ensure data security

When a user attempts to visit a website using HTTPS, if the user's browser cannot identify the digital certificate of the website, the user will be unable to access the website

By default, the HTTPS protocol uses TCP port 443

Huawei H12-261 Practice Test 7 - Free Online Exam Prep & Questions

When a Layer 3 switch forwards IP packets between locally attached VLANs, which of the following fields is rewritten?

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Huawei H12-261 Practice Test 7

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