H12-891 Online Practice Questions and Answers

What are the following correct statements about MUX VLANs?( Multiple select).

A. The Principal VLAN can communicate with all VLANs within the MUX VLAN

B. Each Separate VLAN must be bound to a Principal VLAN

C. Separate VLANs can communicate with all VLANs within a MUX VLAN

D. Each Group VLAN must be bound to a Principal VLAN

The following description of BGP load sharing is wrong with ?( Multiple choice question)

A. The AS_Path properties of the equivalent routes that form load sharing must be different.

B. The destination CIDR blocks are the same, and load sharing can be formed between BGP routes with different sources.

C. If BGP load sharing is implemented , the local device needs to configure the peer next- hop-local command to change the next hop address to its own address when issuing a route to an IBGP peer group .

D. IBGP routes and EBGP routes that reach the same destination in the public network can form a load sharing

Which of the following options is correct?

A. Unicast and broadcasting cannot effectively achieve data transmission between one source and multiple destinations on P2MP, but multicast technology can

B. Multicast technology is able to reduce redundant traffic, so network bandwidth can be saved C. Multicast technology is used for "-to-many" applications

C. Since multicast is based on TCP to establish a connection, multicast technology can ensure the reliable transmission of data

The HW appliance network administrator plans to migrate IGMPv2 in the multicast network to IGMPV3 Where does IGMPV3 improve over IGMPv2?

A. IGMPv3 adds the ability for hosts to specify multicast groups that do not join a specific multicast source

B. IGMPv3 adds the ability for hosts to specify multicast groups that are joined to a specific multicast source

C. IGMPv3 adds Request-to-send and Clear-to-send between source and local IGMP queries

D. IGMPv3 removes the Report-suppression feature for membership reporting

E. IGMPv3 removes the ability to include all sources in a wildcard group

Is the following statement about VLAN aggregation correct?

A. Sub-VLAN is used to isolate broadcast domains

B. A Super VLAN can contain one or more Sub-VLANs

C. The super Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface

D. Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface

NXLAN under different VPNs need to be accessed, one of the subnets is as follows, EVPN under RT 10: 10 both, RT 1000: 1000 export, VPN RT 100: 100 The other subnet can be configured as ?

A. Vpn configure 1000:1000 both evpn

B. EVPN configures 1000:1000 both

C. Configure 1000:1000 export under EVPN

D. Configure 10:10 both under VPN.

Mainstream Layer 2 technologies such as VXLAN, TRILL, NVGRE and MPLS

A. True

B. False

Which of the following is incorrect about HTTPS?( Multiple Choice)

A. HTTPS secures access to data by using SSLVPN.

B. If the HTTPS traffic contains a virus, the router cannot detect the virus directly using IPS technology

C. When using HTTPS to access a website, the website cannot be accessed if the user's browser does not recognize the website's digital certificate.

D. HTTPS protocol uses TCP port 443 by default

What mechanisms or techniques can VRRP combine with to monitor uplink connectivity?

A. IP-link

B. BFD

C. NQA

D. Interface trace

If you want to advertise 19072270/27 to an EBGP neighbor, is the following command correct?

A. network 19072270 mask 255255255224

B. network 1907227000031

C. network 19072270255255255224

D. network 19072270

E. network 19072270255255255240