H12-821_V1.0 Exam Questions

When advertising routes to an iBGP peer, a BGP device needs to set the next hop to its IP address to prevent blackhole routes. Which of the following commands can be run in this ca...

After BGP creates a TCP connection, the ConnectRetry timer starts. If the TCP connection is successfully established, if the TCP connection fails to be established, the device trie...

Which of the following statements is false about the default processing of the next hop address when a BGP device advertises a route?

After a BGP peer relationship is established between two ends, changing the router ID of one end resets the BGP peer relationship.

By default, if no router ID is configured but multiple loopback interface addresses are configured, BGP selects the largest loopback interface address as the router ID.

In BGP, the Origin attribute is used to identify the origin of a route. Which of the following statements are true about the Origin attribute?

The Origin attribute is used to define the origin of BGP path information. There are three types of Origin attributes. Which of the following lists the Origin attributes in ascendi...

Which of the following statements is false about the configuration?

An ACL can be used to match routes or data, but cannot be used to match both the IP address prefix length and mask length.

A route-policy consists of one or more nodes. What is the maximum number of nodes in a route-policy?

Link aggregation is a common network technology. Which of the following are advantages of link aggregation?

On an MSTP network, only the designated port processes inferior BPDUs. On an RSTP network, a port with any role processes inferior BPDUs.

IPv4 multicast is 32 bits long, and the four most significant bits of a class D address are 1110.

In IGMPv1, querier selection depends on a multicast routing protocol, such as PIM. In IGMPv2 and IGMPv3, the interface with the largest IP address acts as the querier.

IGMP has three versions. Different versions support different features. Which of the following features is supported by all versions?

In IPv6, the interface ID is the last 64 bits of an IPv6 address, and it uniquely identifies an interface within a subnet. In-V6 interface IDs can be manually configured, automatic...

Which of the following statements are true about the packet filtering firewall?

A multi-channel protocol that occupies two ports during communication is called a multi-channel protocol. For such protocols, the ASPF function must be enabled on the firewall to e...

If the interval for two consecutive packets of a TCP session reaching the firewall is longer than the aging time of the session, the firewall deletes the session information from t...

When a packet passes through a firewall, the firewall creates a session connection for the packet to guide subsequent forwarding of the packet. However, the firewall does not creat...

BFD is a rapid fault detection independent of media and routing protocols. To use this mechanism to detect link connectivity, devices at both ends must support this feature.

Which of the following statements is false about the command output?

Which of the following is used as the destination port for single-hop BFD?

When deploying a VRRP network, an enterprise administrator sets the virtual IP address to 192.168.1.254 and VRID to 1. Which of the following is the virtual MAC address after the n...

After the administrator of an enterprise deploys a DHCP server, employees complain that their clients cannot obtain IP addresses from the DHCP server. Which of the following is the...

Master NCE-Campus can be used as an authentication server on a WLAN to authenticate STAs.

For a WLAN where Portal authentication is deployed, an AC functions as an access device and communicates with a Portal server using the Portal protocol. Which of the following stat...

On a WLAN, the HSB service sets up an HSB channel between two devices that back up each other, maintains the channel status, and backs up data. Which of the following does HSB back...

A wide area network (WAN) is a remote network that connects local area networks (LANs) or metropolitan area networks (MANs) in different areas for communication purposes. It is typ...

On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import route command is...

On a broadcast IS-IS network shown in the following figure, a DIS needs to be elected to create and update pseudo nodes. Which of the following routers is elected as the DIS? Route...

On the OSPF network shown in the figure, an adjacency has been established between R1 and R2. An engineer configures the commands in the figure on R2. Which of the following routin...

In the OSPF network shown in the figure, R1, R2, and R3 run OSPF, and R1 advertises four VPN routes to OSPF. A filter-policy needs to achieve the following goal: R1's and R3's rout...

By default, the sending interval of BGP Keepalive messages is ().

In the following figure, RTA, RTB, RTC, and RTD are in the same AS and establish iBGP neighbor relationships through direct links. RTB and RTC are route reflectors, and RTA and RTD...

Fill in the blanks in the information of a certain router as follows. Please match the information on the left with the information on the right. Router ID of this device: () Route...

R1, R2, R3, and R4 run OSPF, and the area ID is as shown in the figure, then () will generate Type-3 LSA. R1 Area 0 R2 Area 1 R3 Area 1 R4 Area 2 OSPF

As shown in the figure, R1 and R2 form a VRRP backup group 1. By executing the vrrp vrid 1 virtual- ip () command on R1, it can become the IP address owner, making R1 the Master an...

As shown in the figure below, RTC announces 10.1.1.0/24 into BGP, and RTC is the client of route reflector RTB. Then router RTI() will not receive the route entry 10.1.1.0/24 refle...

As shown in the figure, the output information of R1 is as follows, then the Router ID of R1's neighbor router is ().

The relationship between rules in MQC traffic classification is divided into: and or or. The default relationship is ().

NAC (Network Access Control) network access control includes three authentication methods. () authentication, MAC authentication and Porta authentication.

The security zones created by Huawei firewall by default are untrust, dmz, and local ().

The connection between Site_1 and Site_2 is as shown in the figure. According to the configuration analysis in the figure, when sending a data packet from Site1 to Site2, the Desti...

You can use the stp root primary command to configure the current device as the root bridge. After configuration, the device priority is automatically (), and the device priority c...

As shown in the figure, R1 and R2 are VRRP backup groups with VRID, where the State of R1 is ________ and the State of R2 is ________