HP HPE6-A90 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/p>\n <\/p>\n
Question: 1. Which protocol is primarily used to automatically assign IP addresses and other network configuration parameters to client devices?<\/b><\/p>\n\n- <\/b> DNS<\/span>
\n<\/span>2.<\/b> DHCP<\/span>
\n<\/span>3.<\/b> SNMP<\/span>
\n<\/span>4.<\/b> NTP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> DHCP (Dynamic Host Configuration Protocol) automatically provides network configuration information to client devices. This commonly includes an IP address, subnet mask, default gateway, and DNS server addresses. DHCP reduces the need for administrators to manually configure every endpoint and helps prevent address conflicts caused by duplicate static configurations. DNS has a different purpose: resolving hostnames to IP addresses. SNMP is primarily used for monitoring and managing network devices, while NTP synchronizes system clocks. In a typical enterprise network, a DHCP client broadcasts a request when it needs configuration, and an authorized DHCP server responds with the appropriate network parameters.**<\/span><\/p>\nQuestion: 2. Which device function allows multiple devices in different VLANs to communicate with one another?<\/b><\/p>\n\n- <\/b> Layer 3 routing<\/span>
\n<\/span>2.<\/b> Port mirroring<\/span>
\n<\/span>3.<\/b> MAC address filtering<\/span>
\n<\/span>4.<\/b> Link aggregation<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> Devices in separate VLANs belong to different Layer 2 broadcast domains and cannot communicate directly through ordinary Layer 2 switching. Layer 3 routing is required to move traffic between those VLANs. A Layer 3 switch or router can provide an interface for each VLAN and route packets between them according to its routing table. Port mirroring copies traffic for monitoring and troubleshooting, MAC filtering controls access based on hardware addresses, and link aggregation combines multiple physical links to improve capacity or redundancy. Therefore, when communication between separate VLANs is required, an appropriate Layer 3 routing function must be configured.**<\/span><\/p>\nQuestion: 3. Which protocol is commonly used to securely manage a network device through a command-line interface?<\/b><\/p>\n\n- <\/b> Telnet<\/span>
\n<\/span>2.<\/b> FTP<\/span>
\n<\/span>3.<\/b> SSH<\/span>
\n<\/span>4.<\/b> TFTP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b> SSH (Secure Shell) provides encrypted remote command-line access to network devices and servers. It protects authentication credentials and management traffic from being transmitted in clear text. Telnet can also provide remote CLI access, but its traffic is not encrypted and is therefore unsuitable for secure management over untrusted networks. FTP is primarily used for file transfers, while TFTP is a lightweight file-transfer protocol commonly used for specific network-device operations such as configuration or firmware transfers. In enterprise network management, SSH is generally preferred because it provides confidentiality and authentication for administrative sessions.**<\/span><\/p>\nQuestion: 4. What is the primary purpose of a default gateway on an IP host?<\/b><\/p>\n\n- <\/b> Assign a MAC address to the host<\/span>
\n<\/span>2.<\/b> Resolve domain names<\/span>
\n<\/span>3.<\/b> Synchronize the host clock<\/span>
\n<\/span>4.<\/b> Forward traffic destined for remote networks<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 4<\/span><\/p>\nExplanation:<\/b> A default gateway provides a host with a next-hop destination for traffic that is not intended for the host’s local subnet. When a device determines that the destination IP address belongs to another network, it sends the packet toward its configured default gateway. The gateway then performs the necessary routing decision. A default gateway does not assign MAC addresses, resolve domain names, or synchronize clocks. Those functions are associated with other networking mechanisms and protocols. Correctly configuring the default gateway is therefore essential when hosts need to communicate with systems located outside their local IP subnet.**<\/span><\/p>\nQuestion: 5. Which protocol is commonly used to translate a hostname such as server.example.com into an IP address?<\/b><\/p>\n\n- <\/b> DNS<\/span>
\n<\/span>2.<\/b> DHCP<\/span>
\n<\/span>3.<\/b> ARP<\/span>
\n<\/span>4.<\/b> ICMP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> DNS (Domain Name System) translates human-readable domain and hostnames into IP addresses that network devices can use for communication. For example, when a client needs to connect to a server using a hostname, it can query a DNS server to determine the corresponding IP address. DHCP is responsible for dynamically providing network configuration information. ARP maps an IPv4 address to a MAC address on a local network, while ICMP is used for network control and diagnostic messages. DNS therefore plays a fundamental role in making network services easier to access without requiring users to remember numerical IP addresses.**<\/span><\/p>\nQuestion: 6. Which technology logically separates a switched network into multiple broadcast domains?<\/b><\/p>\n\n- <\/b> STP<\/span>
\n<\/span>2.<\/b> VLAN<\/span>
\n<\/span>3.<\/b> NAT<\/span>
\n<\/span>4.<\/b> QoS<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> A VLAN (Virtual Local Area Network) logically separates a physical switched network into multiple Layer 2 broadcast domains. Devices assigned to different VLANs are logically isolated even when they are connected to the same physical switch infrastructure. Communication between VLANs requires Layer 3 routing. STP is designed to prevent Layer 2 switching loops, NAT translates addresses between network domains, and QoS provides traffic classification and prioritization. VLANs are widely used to improve segmentation, security, and administrative organization. For example, an organization can place employee devices, voice devices, and guest systems into separate VLANs while using the same physical switching infrastructure.**<\/span><\/p>\nQuestion: 7. What is the primary purpose of Spanning Tree Protocol in a switched Ethernet network?<\/b><\/p>\n\n- <\/b> Encrypt network traffic<\/span>
\n<\/span>2.<\/b> Assign IP addresses<\/span>
\n<\/span>3.<\/b> Prevent Layer 2 switching loops<\/span>
\n<\/span>4.<\/b> Translate private IP addresses<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b> Spanning Tree Protocol (STP) helps prevent Layer 2 loops in switched Ethernet networks. Redundant links between switches can provide valuable resiliency, but they can also create loops that cause broadcast storms, duplicate frames, and unstable MAC-address tables. STP logically blocks selected redundant paths while keeping them available as backup paths. If the active topology changes, STP can recalculate the topology and potentially activate a previously blocked link. STP does not provide encryption, assign IP addresses, or perform address translation. Its primary role is maintaining a loop-free Layer 2 topology while allowing network redundancy.**<\/span><\/p>\nQuestion: 8. Which IPv4 address is within a private address range?<\/b><\/p>\n\n- <\/b> 8.8.8.8<\/span>
\n<\/span>2.<\/b> 172.20.10.5<\/span>
\n<\/span>3.<\/b> 1.1.1.1<\/span>
\n<\/span>4.<\/b> 203.0.113.10<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> The IPv4 address 172.20.10.5 belongs to the private range 172.16.0.0 through 172.31.255.255. Private IPv4 addresses are intended for use inside private networks and are not directly routable across the public Internet. The other listed addresses are not part of the RFC 1918 private address ranges. The three commonly recognized private IPv4 blocks are 10.0.0.0\/8, 172.16.0.0\/12, and 192.168.0.0\/16. Network administrators frequently use these ranges for internal hosts, with NAT or another appropriate mechanism used when those hosts need to communicate with public networks.**<\/span><\/p>\nQuestion: 9. Which command is commonly used to test basic IP connectivity to a remote host?<\/b><\/p>\n\n- <\/b> ping<\/span>
\n<\/span>2.<\/b> nslookup<\/span>
\n<\/span>3.<\/b> arp<\/span>
\n<\/span>4.<\/b> hostname<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> The ping utility is commonly used to test basic IP connectivity between a source device and a destination. It typically sends ICMP Echo Request messages and checks whether ICMP Echo Replies are received. Successful replies can provide evidence that the destination is reachable at the IP layer, although they do not prove that every application or service on the destination is functioning. nslookup is primarily used for DNS queries, arp displays or manipulates local ARP information, and hostname displays or changes the local system hostname. Ping is therefore a fundamental first troubleshooting tool for basic network connectivity.**<\/span><\/p>\nQuestion: 10. Which IPv6 address type is designed for communication within the local link and is not routed beyond that link?<\/b><\/p>\n\n- <\/b> Global unicast<\/span>
\n<\/span>2.<\/b> Multicast<\/span>
\n<\/span>3.<\/b> Link-local<\/span>
\n<\/span>4.<\/b> Anycast<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b> IPv6 link-local addresses are used for communication on the local network segment and are not routed by routers beyond that link. They are commonly associated with the FE80::\/10 prefix. Link-local addressing is important for IPv6 neighbor discovery and other local-link functions. Global unicast addresses are designed for broader routed communication, while multicast addresses identify groups of interfaces. Anycast uses an address assigned to multiple interfaces so traffic can be delivered to an appropriate instance according to routing. Link-local addresses therefore provide essential local IPv6 communication without requiring globally routable addressing.**<\/span><\/p>\nQuestion: 11. What is the main purpose of Network Address Translation (NAT)?<\/b><\/p>\n\n- <\/b> Prevent switching loops<\/span>
\n<\/span>2.<\/b> Translate between IP address spaces<\/span>
\n<\/span>3.<\/b> Synchronize network clocks<\/span>
\n<\/span>4.<\/b> Discover neighboring switches<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> Network Address Translation translates IP addressing information between different address spaces. A common example is translating private internal IPv4 addresses into a public address when internal users access resources on the Internet. NAT can conserve public IPv4 addresses and can also provide a degree of address-space separation between internal and external networks. NAT does not prevent Layer 2 switching loops, synchronize clocks, or discover neighboring switches. Different NAT implementations support different mappings and behaviors, including static mappings and dynamic or port-based translations. The specific implementation depends on the network’s addressing and connectivity requirements.**<\/span><\/p>\nQuestion: 12. Which metric is commonly associated with determining the path cost in a traditional Spanning Tree Protocol topology?<\/b><\/p>\n\n- <\/b> VLAN ID<\/span>
\n<\/span>2.<\/b> IP address length<\/span>
\n<\/span>3.<\/b> Interface bandwidth<\/span>
\n<\/span>4.<\/b> DNS record type<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b>