View Full HP HPE6-A90 Exam Dumps and Practice Test Dumps

 

Question: 121. Which HPE networking feature can be used to logically divide a physical switch into multiple independent switching contexts?

1. VLAN tagging
   2. Virtual switching framework
   3. Port mirroring
   4. DHCP relay

Correct Answer: 2

Explanation: A virtual switching framework can allow supported network hardware to operate as multiple logical switching contexts or provide virtualization capabilities, depending on the platform. This type of functionality can help organizations isolate environments, simplify management, or build more flexible network architectures. VLAN tagging provides logical segmentation within a switching infrastructure, while port mirroring copies traffic for analysis and DHCP relay forwards DHCP messages between network segments. The exact virtualization capabilities depend on the HPE platform and software version, so administrators should verify the supported features before implementing a design.

Question: 122. Which protocol is commonly used to dynamically exchange routing information between routers within an autonomous system?

1. OSPF
   2. FTP
   3. SMTP
   4. SNMP

Correct Answer: 1

Explanation: Open Shortest Path First (OSPF) is a link-state interior gateway protocol commonly used to exchange routing information within an autonomous system. Routers use OSPF information to build a topology database and calculate shortest paths using the SPF algorithm. OSPF can support hierarchical designs through areas, making it suitable for larger enterprise networks. FTP transfers files, SMTP handles email transmission, and SNMP is mainly used for monitoring and management. Understanding OSPF concepts such as neighbors, areas, LSAs, and cost is useful when troubleshooting dynamic routing behavior.

Question: 123. What is the main purpose of a Layer 3 switch?

1. Provide only wireless connectivity
   2. Replace all security appliances
   3. Perform switching and IP routing functions
   4. Provide only physical cable termination

Correct Answer: 3

Explanation: A Layer 3 switch combines traditional Layer 2 switching capabilities with Layer 3 routing functions. This allows the device to switch traffic within VLANs while also routing traffic between different IP subnets. Layer 3 switches are commonly used in enterprise networks where high-speed inter-VLAN routing is required. They do not replace every security appliance and are not limited to wireless or physical cable termination functions. Administrators can use Layer 3 switches to build efficient campus networks while applying routing policies and segmentation appropriate to the environment.

Question: 124. Which protocol is commonly used to securely manage a network device through a command-line interface?

1. SSH
   2. Telnet
   3. TFTP
   4. HTTP

Correct Answer: 1

Explanation: SSH provides encrypted remote command-line access to network devices and servers. It protects administrative sessions by providing encryption and authentication mechanisms. Network administrators commonly use SSH for configuring switches, routers, firewalls, and other infrastructure remotely. Telnet also provides command-line access but transmits information without modern session encryption, making it unsuitable for secure administrative environments. TFTP is primarily used for simple file transfers, while HTTP is associated with web-based communication. Using SSH helps protect administrative credentials and configuration commands from interception over untrusted networks.

Question: 125. Which HPE networking technology can provide redundancy by allowing multiple physical switches to operate as a logical switching system?

1. Network Address Translation
   2. Switch virtualization or stacking technology
   3. DNS forwarding
   4. DHCP snooping

Correct Answer: 2

Explanation: Switch virtualization or stacking technologies can allow multiple physical switches to operate together as a logical switching system, depending on the HPE platform and supported architecture. Such designs can simplify management and provide additional resilience or aggregated connectivity. The exact implementation may differ between HPE product families, so administrators should confirm the platform-specific terminology and capabilities. NAT translates addresses, DNS forwarding handles name-resolution requests, and DHCP snooping provides security controls around DHCP traffic. Virtualized or stacked switch architectures can be particularly useful when network availability and simplified management are important requirements.

Question: 126. What is the purpose of DHCP snooping on a managed switch?

1. Encrypt DHCP packets
   2. Prevent unauthorized DHCP servers from providing network configuration
   3. Increase wireless signal strength
   4. Replace the routing table

Correct Answer: 2

Explanation: DHCP snooping is a switch security feature designed to distinguish trusted and untrusted DHCP traffic. It can help prevent unauthorized DHCP servers from responding to client requests and distributing incorrect network configuration information. The switch can designate trusted interfaces, such as those connected toward legitimate DHCP infrastructure, while treating other ports as untrusted. DHCP snooping does not encrypt DHCP packets, increase wireless coverage, or replace routing information. It can also provide information that other security features may use for additional network-access controls, depending on the switch platform.

Question: 127. Which network architecture places access points, switches, and endpoints at the edge of the network while centralized services operate elsewhere?

1. Access-layer architecture
   2. Loopback architecture
   3. Broadcast-only architecture
   4. Console architecture

Correct Answer: 1

Explanation: In a hierarchical enterprise network, the access layer is where endpoints and edge connectivity devices typically connect to the network. Access switches can connect computers, phones, access points, printers, and other user-facing devices to the broader network infrastructure. Higher layers or centralized services may provide routing, policy enforcement, and other functions. The terms loopback, broadcast-only, and console architecture do not describe a standard enterprise network layer. Understanding the access layer is important when planning VLANs, authentication, Power over Ethernet, edge security, and endpoint connectivity.

Question: 128. What does Power over Ethernet (PoE) allow a compatible switch to provide?

1. IP routing without a CPU
   2. Electrical power over Ethernet cabling
   3. Unlimited bandwidth
   4. Automatic fiber conversion

Correct Answer: 2

Explanation: Power over Ethernet allows compatible network equipment to receive electrical power through Ethernet cabling. This is commonly used for devices such as wireless access points, IP phones, cameras, and certain IoT devices. PoE can simplify installations by reducing the need for separate power cables and electrical outlets near each endpoint. It does not provide unlimited bandwidth, eliminate routing requirements, or automatically convert copper connections to fiber. Administrators should consider PoE standards, power budgets, cable requirements, and endpoint consumption when planning a PoE-enabled network.

Question: 129. Which protocol is commonly used to exchange VLAN information between switches in some vendor-specific environments?

1. VTP
   2. NTP
   3. ICMP
   4. RTP

Correct Answer: 1

Explanation: VLAN Trunking Protocol (VTP) is a Cisco-specific protocol historically used to distribute VLAN information between compatible switches. It is not a general standards-based VLAN configuration mechanism and should not be confused with IEEE 802.1Q, which defines VLAN tagging on Ethernet trunks. NTP synchronizes system clocks, ICMP supports network control and diagnostics, and RTP is commonly used for real-time media transport. In multi-vendor environments, administrators generally need to use technologies and configuration methods supported consistently across the deployed switching platforms.

Question: 130. What is the primary purpose of a trunk port?

1. Connect only one untagged endpoint
   2. Carry traffic for multiple VLANs
   3. Disable Layer 3 routing
   4. Provide DNS service

Correct Answer: 2

Explanation: A trunk port is designed to transport traffic belonging to multiple VLANs over a single physical link. VLAN tagging, commonly based on IEEE 802.1Q, allows the receiving device to identify the VLAN associated with each frame. Trunks are frequently used between switches and between switches and Layer 3 devices or other VLAN-aware systems. An access port is generally associated with a single VLAN for endpoint connectivity. Correct trunk configuration is essential because mismatched VLAN membership or tagging settings can prevent devices in specific VLANs from communicating properly.

Question: 131. Which routing protocol is based primarily on hop count as its routing metric?

1. OSPF
   2. BGP
   3. RIP
   4. EIGRP

Correct Answer: 3

Explanation: Routing Information Protocol (RIP) primarily uses hop count as its routing metric. Each router hop increases the metric, and RIP has a maximum usable hop-count limit that restricts its scalability. OSPF uses a cost-based metric, EIGRP uses a composite metric, and BGP uses path attributes and policies for route selection. RIP can be useful in simple or legacy environments, but larger networks commonly use more scalable routing protocols. Understanding routing metrics helps explain why different protocols may select different paths to the same destination.

Question: 132. What is the purpose of an SVI on a Layer 3 switch?

1. Provide a Layer 3 interface associated with a VLAN
   2. Provide electrical power to an access point
   3. Store switch passwords
   4. Replace all physical interfaces

Correct Answer: 1

Explanation: A Switched Virtual Interface (SVI) provides a Layer 3 interface associated with a VLAN on a multilayer switch. An SVI can have an IP address and can be used for management access or inter-VLAN routing, depending on the configuration. For example, a Layer 3 switch can use separate SVIs for different VLANs and route traffic between them. An SVI does not provide electrical power, store passwords, or replace all physical interfaces. Understanding SVIs is important when configuring routing and management on enterprise switches.

Question: 133. Which security mechanism can help prevent unauthorized devices from connecting through a switch port?

1. Port security
   2. DNS caching
   3. NTP
   4. Route summarization

Correct Answer: 1

Explanation: Port security can restrict which devices are permitted to use a switch port by controlling learned or configured MAC addresses. Depending on the platform, administrators may specify permitted MAC addresses, limit the number of learned addresses, and define actions when a violation occurs. Port security can provide an additional layer of access control at the network edge. DNS caching improves name-resolution efficiency, NTP synchronizes time, and route summarization reduces routing-table complexity. Port security should be designed carefully so that legitimate endpoint changes do not unintentionally cause connectivity problems.

Question: 134. What is route summarization used for?

1. Combine multiple routes into a broader route advertisement
   2. Encrypt routing updates
   3. Increase Ethernet frame size
   4. Assign IP addresses to clients

Correct Answer: 1

Explanation: Route summarization combines multiple more-specific network prefixes into a broader summary route. This can reduce routing-table size, decrease the amount of routing information exchanged, and simplify routing design. For example, several contiguous networks may be represented by one summary prefix when the addressing structure permits it. Route summarization does not encrypt routing updates, increase Ethernet frame size, or provide client IP addressing. Proper summarization requires careful address planning because an overly broad summary can potentially send traffic toward an incorrect destination when more-specific information is unavailable.

Question: 135. Which protocol is commonly used to exchange routing information between autonomous systems on the Internet?

1. BGP
   2. DHCP
   3. SNMP
   4. ARP

Correct Answer: 1

Explanation: Border Gateway Protocol (BGP) is the primary routing protocol used to exchange routing information between autonomous systems. BGP is designed around policy-based route selection and can carry information about many IP prefixes across large interconnected networks. DHCP provides host configuration, SNMP supports network monitoring, and ARP resolves IPv4 addresses to MAC addresses on local networks. BGP is particularly important for Internet service providers, large enterprises with multiple external connections, and organizations that require control over how external routes are advertised and selected.

Question: 136. What does an access port on a switch typically connect to?

1. A single end-user device or endpoint
   2. Multiple VLANs using tagged traffic
   3. A DNS root server
   4. A routing protocol database

Correct Answer: 1

Explanation: An access port is typically configured to carry traffic for a single VLAN and is commonly used to connect endpoint devices such as computers, printers, cameras, or IP phones. Unlike a trunk port, an access port generally does not carry multiple VLANs as tagged traffic for normal endpoint connectivity. Correct access-port configuration ensures that the connected device is placed into the intended VLAN and receives the appropriate network services. Trunk ports are more commonly used for inter-switch or VLAN-aware infrastructure connections where multiple VLANs must cross the same physical link.

Question: 137. What is the main purpose of network segmentation?

1. Increase the number of broadcast and security boundaries
   2. Remove all routing requirements
   3. Make every device part of one broadcast domain
   4. Disable network monitoring

Correct Answer: 1

Explanation: Network segmentation divides infrastructure into separate logical or physical sections. VLANs, routing boundaries, firewalls, and other controls can be used to create segmentation. Proper segmentation can reduce broadcast scope, improve security isolation, simplify policy enforcement, and limit the impact of certain network problems. Segmentation does not eliminate routing requirements and should not be confused with making every device part of one large broadcast domain. Effective segmentation should be based on business requirements, security policies, traffic patterns, and operational considerations.

Question: 138. Which protocol can be used to securely access a web-based management interface?

1. HTTPS
   2. HTTP
   3. TFTP
   4. Telnet

Correct Answer: 1

Explanation: HTTPS uses HTTP over TLS to provide protected communication between a client and a web server or web-based management interface. When supported and properly configured, HTTPS helps protect administrative credentials and management traffic against interception and modification. HTTP does not provide the same transport encryption, while TFTP and Telnet are designed for different functions. Network administrators should use secure management protocols and strong authentication mechanisms when configuring infrastructure through web interfaces. Certificate configuration and appropriate TLS settings are also important for maintaining secure administrative access.

Question: 139. Which HPE switching concept allows multiple physical links to operate together as a logical link?

1. Link aggregation
   2. DNS delegation
   3. DHCP reservation
   4. VLAN pruning

Correct Answer: 1

Explanation: Link aggregation allows multiple physical interfaces to operate together as a logical connection. This can provide increased aggregate capacity and redundancy when supported by the connected devices and properly configured. Link Aggregation Control Protocol (LACP) can dynamically negotiate and maintain an aggregation group on compatible platforms. DNS delegation manages authority for DNS zones, DHCP reservations associate specific clients with designated addresses, and VLAN pruning controls which VLANs are allowed across trunks. Link aggregation is useful when network designs require additional capacity and resilience between switches or other infrastructure devices.

Question: 140. What is the primary benefit of centralized network management?

1. It removes the need for device configurations
   2. It allows administrators to monitor and manage multiple devices from a central system
   3. It guarantees that no device will ever fail
   4. It eliminates the need for network security

Correct Answer: 2

Explanation: Centralized network management allows administrators to monitor, configure, and maintain multiple network devices through a common management system or platform. Depending on the solution, administrators may view device health, collect performance information, receive alerts, manage configurations, and track network changes from a central location. This can improve operational visibility and reduce repetitive administrative work. Centralized management does not eliminate the need for device configurations, security controls, or maintenance, and it cannot guarantee that hardware will never fail. It is a management approach that improves consistency and visibility across network infrastructure.