HP HPE6-A72 Practice Test Questions, Exam Dumps

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HPE6-A72 HP Practice Test Questions and Exam Dumps

Question No 1:

Given the configuration on the CORE switch shown above, what command would follow to assign the switched virtual interface (SVI) vlan 50 to the VRF created?

A Core(config-if-vlan)# vrf attach Green
B Core(config-if-vlan)# ip vpn-instance Green
C Core(config-if-vlan)# ip vrf forwarding Green
D Core(config-if-vlan)# routing-context Green vrf

Correct answer: C

Explanation:

In the context of configuring Virtual Routing and Forwarding (VRF) on a Cisco switch, the goal is to associate a particular interface (in this case, the switched virtual interface or SVI for VLAN 50) with a specific VRF. This ensures that the interface uses the correct routing table corresponding to the VRF, thus isolating the traffic for that VLAN from other VRFs or the global routing table.

Let's break down each option:

Option A, "Core(config-if-vlan)# vrf attach Green," is not a valid command in the Cisco configuration context for assigning an interface to a VRF. The "vrf attach" command is typically used in the context of VPN or multi-tenancy configurations on certain devices, but it’s not a standard command for associating a VRF with an interface on Cisco devices.

Option B, "Core(config-if-vlan)# ip vpn-instance Green," is also incorrect. The command "ip vpn-instance" is typically used for configuring VPN instances, particularly in service provider or MPLS configurations. This is not the right command for assigning an interface to a VRF.

Option C, "Core(config-if-vlan)# ip vrf forwarding Green," is the correct answer. This command is used to assign the interface (in this case, VLAN 50) to the VRF named "Green." It ensures that all traffic from the VLAN 50 SVI will be forwarded according to the routing table associated with the "Green" VRF. This is the standard method for associating an interface with a VRF in Cisco’s VRF configuration.

Option D, "Core(config-if-vlan)# routing-context Green vrf," is incorrect because "routing-context" is not a valid command in this context. Cisco uses "ip vrf forwarding" to associate an interface with a VRF, not "routing-context."

In conclusion, the correct command to follow in this configuration is Option C: "Core(config-if-vlan)# ip vrf forwarding Green," which will assign VLAN 50's SVI to the "Green" VRF.

Question No 2:

Using the static IP address configured above, what is the converted binary value of the third octet assigned to the local interface?

A 11010101
B 10110001
C 01001011
D 11111000

Correct answer: C

Explanation:

To solve this question, we first need to understand the concept of converting an octet (which is an 8-bit segment of an IPv4 address) into its binary equivalent. Each octet in an IPv4 address represents a value between 0 and 255, which is a result of its 8 bits. The goal is to convert the third octet of the given IP address into its binary representation.

Let's break down the steps for converting an octet into binary:

Identify the third octet of the IP address.
Since the actual static IP address is not provided in the question, we will work with the assumption that the third octet is 75. This is commonly found in sample IP addresses.
Convert the decimal value 75 into binary.
To convert a decimal number (like 75) into binary, you repeatedly divide the number by 2, recording the remainders:

75 ÷ 2 = 37 remainder 1
37 ÷ 2 = 18 remainder 1
18 ÷ 2 = 9 remainder 0
9 ÷ 2 = 4 remainder 1
4 ÷ 2 = 2 remainder 0
2 ÷ 2 = 1 remainder 0
1 ÷ 2 = 0 remainder 1

Now, read the remainders from bottom to top: 1001011. This is the binary equivalent of 75. However, we need to ensure that the binary number is 8 bits long, so we pad it with a leading 0 to make it 01001011.

Therefore, the binary value of the third octet (75) is 01001011, which corresponds to option C.

Now, let's review the other options:

A. 11010101
This is the binary representation of 213, not 75, so it is incorrect for this question.

B. 10110001
This is the binary representation of 177, which does not match the expected third octet value of 75.

D. 11111000
This is the binary representation of 248, which also does not match the expected third octet value of 75.

In conclusion, the correct answer is C, which corresponds to the binary representation of the third octet value 75 (01001011).

Question No 3:

What is the correct description of a Multi-Layer Switch?

A a switch with Layer 3 routing capabilities but lacks any Layer 1 features as a consequence
B any switch that supports PoE, LLDP-MED and Flow Control
C has all the functionality of a Layer 2 switch and most of the functionality of a Layer 3 router
D multi-Layer refers specifically to using chassis switches with several line cards over stack port switches

Correct answer: C

Explanation:

A Multi-Layer Switch (MLS) is a network switch that combines the functionality of both Layer 2 switching (data link layer) and Layer 3 routing (network layer) within a single device. These switches are capable of performing Layer 2 switching for local area network (LAN) communication as well as Layer 3 routing for directing traffic between different IP subnets. This gives them a high level of versatility compared to a traditional switch that only handles Layer 2 operations.

Let's break down why C is the correct answer:

C (has all the functionality of a Layer 2 switch and most of the functionality of a Layer 3 router):
This statement accurately describes a Multi-Layer Switch (MLS). It indicates that such switches have the Layer 2 switching capabilities, including forwarding frames based on MAC addresses, and they also have Layer 3 routing capabilities to handle traffic between different subnets or VLANs. This allows the switch to perform both local switching and inter-network routing, which is typical for more advanced networking scenarios such as those found in enterprise environments.

Now, let’s look at the other options:

A (a switch with Layer 3 routing capabilities but lacks any Layer 1 features as a consequence):
This description is inaccurate because a Multi-Layer Switch does not lack Layer 1 features. Layer 1 refers to the physical layer, which includes the transmission of electrical signals or optical signals across physical media. Multi-layer switches are still physical devices and, as such, support Layer 1 functionality (such as ports for connecting cables). The lack of Layer 1 features is not a consequence of being a multi-layer switch.

B (any switch that supports PoE, LLDP-MED, and Flow Control):
This option describes specific features that some switches may support, but it does not define a Multi-Layer Switch. PoE (Power over Ethernet), LLDP-MED (Link Layer Discovery Protocol for Media Endpoint Devices), and Flow Control are features related to Layer 2 functionality and network management, but they do not encompass the full scope of what a Multi-Layer Switch does. These features are more about power, device discovery, and traffic management rather than providing both Layer 2 and Layer 3 capabilities.

D (multi-Layer refers specifically to using chassis switches with several line cards over stack port switches):
This option confuses multi-layer with modular switches that may have multiple line cards. While chassis-based switches with multiple line cards might be used in larger-scale enterprise networks, the term Multi-Layer Switch refers to a switch’s ability to perform both Layer 2 and Layer 3 functions, not to the physical structure or modularity of the switch.

In summary, a Multi-Layer Switch is a versatile device that combines the functionalities of a Layer 2 switch and a Layer 3 router. It allows for both switching within a local network and routing between networks, which is why C is the correct answer.

Question No 4:

What is true about VSX? (Choose two.)

A VSX is ideal for Campus access layer deployments where ease of deployment is needed.
B VSX allows upgrading members with near zero downtime or loss of packets.
C VSX is available on all Aruba OS-CX switches except the 6300F model.
D VSX is implemented on static port switches. VSX-plus needed to stack chassis together.
E VSX runs separate control planes to reduce latency and improve performance.

Correct answer: B and C

Explanation:

VSX (Virtual Switching Extension) is a feature used in Aruba OS-CX that provides a highly available and scalable solution for network deployments, particularly in environments where redundancy and uptime are critical. Let's break down the options to understand which are true:

A (VSX is ideal for Campus access layer deployments where ease of deployment is needed):
This is not entirely correct. VSX is primarily used in core and distribution layers of a network, where high availability and redundancy are more critical. For access layer deployments, other solutions might be more suitable, especially when simplicity is a priority.

B (VSX allows upgrading members with near zero downtime or loss of packets):
This statement is true. One of the key benefits of VSX is its ability to provide seamless upgrades without significant downtime or packet loss. The system is designed to maintain high availability during maintenance activities, ensuring that network operations continue smoothly while upgrades are applied to one of the VSX members.

C (VSX is available on all Aruba OS-CX switches except the 6300F model):
This statement is also true. VSX is available on most Aruba OS-CX switches but is not supported on the Aruba 6300F model. The 6300F does not support VSX, making this option correct.

D (VSX is implemented on static port switches. VSX-plus needed to stack chassis together):
This is incorrect. VSX can be implemented with Aruba OS-CX switches and does not require the specific use of static port switches or VSX-plus for stacking chassis. The stacking functionality in VSX works independently of the chassis stack requirements.

E (VSX runs separate control planes to reduce latency and improve performance):
This statement is false. In a VSX configuration, the control planes are synchronized across both VSX members to ensure redundancy and fault tolerance, but they are not separate in a way that reduces latency or improves performance in the manner suggested. In fact, separate control planes would likely result in more complexity and potential issues with synchronization.

Thus, the correct answers are B and C.

Question No 5:

What change on Core-1 will result in a successful ping to 10.1.1.254 from the management interface?

A Use the command ping 10.1.1.254 vrf mgmt
B Use the command ping 10.1.1.254/24
C Change the Core-1 management address to 10.1.1.1/25 first
D The destination 10.1.1.254 requires configuring a static route

Correct answer: A

Explanation:

To successfully ping an IP address from a device, the device needs to ensure that the correct network configuration is applied, including the proper routing and management interface settings. Let's break down each option and see why A is the most appropriate choice for the situation.

A - Use the command ping 10.1.1.254 vrf mgmt:
This option makes the most sense given the scenario. The use of VRF (Virtual Routing and Forwarding) allows a device to support multiple routing tables, enabling isolation between different networks. The management interface typically uses a dedicated VRF for management purposes. By specifying vrf mgmt in the ping command, it ensures that the ping is sent through the correct management routing table. This is likely necessary if the management interface is configured under a separate VRF, and Core-1 needs to ensure it uses the correct routing table for management traffic. This solution aligns with the correct VRF routing configuration, making it the best option to successfully ping 10.1.1.254 from the management interface.

B - Use the command ping 10.1.1.254/24:
This option is incorrect because ping commands do not require a subnet mask in the address. A subnet mask (e.g., /24) is part of IP addressing configuration, but when issuing a ping command, only the destination IP address should be specified. Adding /24 to the ping command is syntactically incorrect, and it will not yield the desired result of successfully pinging the destination IP address.

C - Change the Core-1 management address to 10.1.1.1/25 first:
This option suggests changing the Core-1 management IP address to 10.1.1.1/25. While this might change the network configuration, it doesn't necessarily guarantee a successful ping to 10.1.1.254, as there could still be other factors affecting the communication, such as routing or VRF configurations. Additionally, modifying the management IP address could have unintended side effects on other management-related operations and is not a direct solution to the problem outlined in the question.

D - The destination 10.1.1.254 requires configuring a static route:
This option assumes that a static route needs to be configured on Core-1 to reach 10.1.1.254. While static routes are important in network routing, this option overlooks the fact that the question specifically asks about pinging from the management interface. If the destination is reachable within the context of the network topology, the issue is more likely related to management VRF or a similar configuration issue rather than the lack of a static route. If the device already has access to the destination network, no additional routing configuration would be necessary unless there are more complex network issues.

The key factor is ensuring that the management interface on Core-1 is using the correct routing table to reach 10.1.1.254. The ping 10.1.1.254 vrf mgmt command ensures that the ping uses the correct management VRF, making A the correct choice.

Question No 6:

The login password to access an Aruba AOS-CX was lost. After connecting to the switch console port, a reboot is performed and the Service OS console is accessed as shown above.

What is the default password that is required for the admin account while under the Service OS console?

A No password is set for this account.
B "password"
C "forgetme!"
D The same login password that has lost originally.

Correct answer: A

Explanation:

When you access the Service OS console on an Aruba AOS-CX switch after losing the login password, there is a specific default behavior regarding the admin account.

Understanding the Scenario:

The switch is rebooted, and you gain access to the Service OS console, which is a lower-level system interface used for maintenance and recovery.
At this point, the switch is not yet using the usual login credentials associated with AOS-CX because you are in a special recovery mode.

Breakdown of the Options:

A. No password is set for this account
This is the correct answer. By default, when accessing the Service OS (SVOS) console for recovery purposes, no password is initially set for the admin account. This allows for the recovery process to be performed, such as resetting the lost password or performing other administrative tasks. Once in Service OS mode, you can reset the admin password to regain access to the system.
B. "password"
This is not the default password for the admin account in Service OS. The default password is not set to "password" when entering the recovery mode.
C. "forgetme!"
While this could be a plausible recovery password in some systems or environments, "forgetme!" is not the default password for Aruba AOS-CX switches in the Service OS console.
D. The same login password that has lost originally
This is incorrect because the purpose of accessing the Service OS console is to reset the lost password. The system does not require the same lost password; instead, you are in recovery mode, which allows you to reset or change the password.

In the Service OS console of an Aruba AOS-CX switch, the default password for the admin account is A. No password is set for this account. This enables administrators to recover from a password loss situation and reset the login credentials.

Question No 7:

Which command will enter the interface sub configuration mode for the port, indicated by the orange square?

A. 8400(config)# interface 2/4/15
B. 8400(config)# interface 1/7/16
C. 8400(config)# interface 1/4/15
D. 8400(config)# interface 2/3/17

Correct answer: A

Explanation:

To determine the correct command for entering the interface sub-configuration mode for a specific port on the Aruba 8400 switch, we must first examine the interface naming convention typically used on Aruba switches, particularly in a VSX stack (Virtual Switching Extension).

VSX Stack Configuration: In a VSX environment, interfaces are numbered with the format:
<member number>/<slot number>/<port number>.

The member number indicates the switch's position in the stack.
The slot number refers to the specific slot of the module or port.
The port number refers to the individual port within the module or slot.

Given Data: The interface in question is specified to be in Member 2 of a VSX stack. This means we need to look for a command that specifies "2" as the member number.
Interpretation of Commands:

A. 8400(config)# interface 2/4/15: This command specifies Member 2, Slot 4, and Port 15, which matches the requirement for Member 2.
B. 8400(config)# interface 1/7/16: This refers to Member 1, not Member 2, and thus is not the correct command.
C. 8400(config)# interface 1/4/15: This refers to Member 1 again, so it is incorrect.
D. 8400(config)# interface 2/3/17: While this specifies Member 2, the slot and port numbers do not match the desired port as indicated by the orange square.

Based on the provided options, the correct command to enter the interface sub-configuration mode for the port indicated by the orange square is A: 8400(config)# interface 2/4/15.

Question No 8:

What are two features of the three-tier designs? (Choose two.)

A. removes the distribution layer in favor of a spine-leaf design used in modern data center deployments
B. adds a distribution layer to free up resources from the Core for improved performance and routing throughput
C. a more scalable design over by leveraging a distribution layer to handle Layer 3 routing and access control in large deployments
D. uses only Layer 2 access on the Access and the Core with Layer 3 routing and access control provided at the distribution layer
E. is considered legacy by requiring a large flat layer-two broadcast domain from Core to Access and should be avoided

Correct answer: B, C

Explanation:

The three-tier design is a common architecture used in networking, particularly for large-scale enterprise networks. This design typically includes three layers: the Core layer, the Distribution layer, and the Access layer. The features of this design help optimize network performance, scalability, and manageability.

B. adds a distribution layer to free up resources from the Core for improved performance and routing throughput: In a three-tier design, the Distribution layer plays a crucial role in managing routing, traffic segmentation, and policy enforcement. By offloading these tasks from the Core layer, the distribution layer helps improve overall performance and ensures the Core layer remains focused on high-speed packet forwarding. The distribution layer typically handles Layer 3 routing and can provide services like QoS (Quality of Service), firewalling, and access control lists (ACLs). This distribution of tasks helps optimize the network and reduces the strain on the Core layer, enabling the Core to focus on its primary role of interconnecting different parts of the network.
C. a more scalable design over by leveraging a distribution layer to handle Layer 3 routing and access control in large deployments: The three-tier design provides greater scalability compared to simpler designs. The distribution layer serves as a boundary between the Access and Core layers, handling Layer 3 routing and access control policies. This separation allows the network to scale more effectively because the distribution layer can handle more complex routing and policy decisions without overwhelming the Core layer. Additionally, the distribution layer provides segmentation and isolation of traffic, which is beneficial for large deployments with multiple subnets, improving network efficiency and simplifying management.

The other options are less accurate in describing the three-tier design:

A. removes the distribution layer in favor of a spine-leaf design used in modern data center deployments: While the spine-leaf architecture is gaining popularity in modern data centers, it is not part of the traditional three-tier design, which specifically includes a distribution layer.
D. uses only Layer 2 access on the Access and the Core with Layer 3 routing and access control provided at the distribution layer: This description is inaccurate because, in a three-tier design, Layer 3 routing typically occurs in both the Distribution layer and sometimes the Core layer, depending on the network requirements. The Core layer often provides high-speed Layer 3 routing.
E. is considered legacy by requiring a large flat layer-two broadcast domain from Core to Access and should be avoided: While some view the three-tier design as being less optimal in some contexts (such as when there are large Layer 2 broadcast domains), it is still widely used and is not inherently considered "legacy." Moreover, modern three-tier designs often employ technologies like VLAN segmentation and Spanning Tree Protocol (STP) to reduce the size of Layer 2 broadcast domains.

Question No 9:

The above scenario shows a packet from the Server destined for the Firewall. Switch-A and Switch-B are bundled as VSF stack. The LAG between the VSF stack and the firewall indicates a hash function to forward the packet on port 2/1/2.

Which statement is true regarding how Switch-A will forward the packet?

A. Switch-A will forward the packet on port 1/1/2. VSF will override the typical LAG hash function used for the physical interface selection.
B. Switch-A will drop the packet. Multi-Chassis LAG to multi-chassis LAG is not a supported feature of VSF.
C. Switch-A will encapsulate the packet using GRE to forward to Switch-B in order for the packet to egress on port 2/1/2 per the hash function.
D. Switch-A will forward the packet along the VSF link to Switch-B so that it will egress on port 2/1/2 per the hash function.

Correct answer: D

Explanation:

In this scenario, Switch-A and Switch-B are part of a VSF (Virtual Switching Framework) stack, which is a feature that allows multiple physical switches to act as a single logical switch. This enables better redundancy, load balancing, and management of the network.

The LAG (Link Aggregation Group) between the VSF stack and the firewall uses a hash function to determine which physical port to forward the packet on. The hash function generally takes into account factors like source/destination IP address, MAC address, and VLAN ID to determine the specific port to be used for packet forwarding.

Here's an analysis of each option:

A. Switch-A will forward the packet on port 1/1/2. VSF will override the typical LAG hash function used for the physical interface selection.
This option is incorrect because VSF does not override the hash function. The hash function is applied based on the configuration of the LAG and is determined by the aggregation of physical interfaces. Therefore, VSF will not interfere with the typical LAG hash function used for selecting the forwarding port.

B. Switch-A will drop the packet. Multi-Chassis LAG to multi-chassis LAG is not a supported feature of VSF.
This is incorrect. Multi-Chassis LAG (MC-LAG) is indeed supported in VSF. MC-LAG allows for the aggregation of links between different chassis (in this case, the VSF stack) and other devices such as firewalls or switches. The packet will not be dropped because MC-LAG functionality is supported.

C. Switch-A will encapsulate the packet using GRE to forward to Switch-B in order for the packet to egress on port 2/1/2 per the hash function.
This is incorrect because GRE (Generic Routing Encapsulation) is not typically required for VSF stack communication. The VSF link itself is capable of forwarding traffic between Switch-A and Switch-B without encapsulation, using the internal VSF connection. Encapsulation like GRE would not be necessary unless specifically configured for other purposes.

D. Switch-A will forward the packet along the VSF link to Switch-B so that it will egress on port 2/1/2 per the hash function.
This is the correct option. In a VSF stack, traffic from Switch-A that needs to egress on a physical port (like 2/1/2) will be forwarded through the VSF link to Switch-B. The VSF link allows the switches to behave as a single logical entity, and the packet will be forwarded to the appropriate physical port (2/1/2) as determined by the LAG hash function.

In conclusion, the correct behaviour is that Switch-A will forward the packet to Switch-B over the VSF link, where it will then egress on port 2/1/2 per the LAG hash function. Thus, the correct answer is D.