HP HPE6-A90 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/p>\n <\/p>\n
Question: 61. Which protocol is commonly used to discover neighboring network devices and their capabilities?<\/b><\/p>\n\n- <\/b> CDP<\/span>
\n<\/span>2.<\/b> SMTP<\/span>
\n<\/span>3.<\/b> DHCP<\/span>
\n<\/span>4.<\/b> FTP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> Cisco Discovery Protocol (CDP) is a Layer 2 discovery protocol that can provide information about directly connected Cisco devices. It may reveal details such as the neighboring device name, platform, capabilities, and connected interface. This information can be valuable during network documentation and troubleshooting. DHCP is used for automatic IP configuration, SMTP is associated with email transmission, and FTP is used for file transfers. CDP is vendor-specific, while similar discovery functionality can be provided by standards-based protocols such as LLDP. Administrators can use neighbor-discovery information to verify physical connections and understand network topology.<\/span><\/p>\nQuestion: 62. Which standards-based protocol provides device discovery information between network devices from different vendors?<\/b><\/p>\n\n- <\/b> STP<\/span>
\n<\/span>2.<\/b> LLDP<\/span>
\n<\/span>3.<\/b> NAT<\/span>
\n<\/span>4.<\/b> ARP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> LLDP (Link Layer Discovery Protocol) is a standards-based Layer 2 protocol designed to allow network devices to advertise information about themselves to directly connected neighbors. It can help administrators identify connected devices, interfaces, system names, and capabilities. Unlike vendor-specific discovery protocols, LLDP is designed for interoperability between equipment from different manufacturers. STP is used to prevent Layer 2 loops, NAT translates addresses, and ARP resolves IPv4 addresses to MAC addresses. LLDP is particularly useful in multi-vendor enterprise environments where consistent network-discovery information is needed for documentation and troubleshooting.<\/span><\/p>\nQuestion: 63. What is the primary purpose of a trunk link between network switches?<\/b><\/p>\n\n- <\/b> Carry traffic for multiple VLANs<\/span>
\n<\/span>2.<\/b> Assign IP addresses to clients<\/span>
\n<\/span>3.<\/b> Provide DNS resolution<\/span>
\n<\/span>4.<\/b> Encrypt all network traffic<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> A trunk link is designed to carry traffic belonging to multiple VLANs across a single physical connection. VLAN identification is maintained using a tagging mechanism such as IEEE 802.1Q. Trunks are commonly used between switches, between switches and routers, or between switches and other VLAN-aware devices. A trunk does not primarily assign IP addresses, provide DNS services, or automatically encrypt traffic. Proper trunk configuration requires both ends to agree on the VLANs and tagging behavior. Incorrect trunk settings can result in VLAN connectivity problems or unexpected traffic behavior.<\/span><\/p>\nQuestion: 64. Which IPv4 address range is reserved for link-local addressing when a device cannot obtain an address through normal configuration methods?<\/b><\/p>\n\n- <\/b> 10.0.0.0\/8<\/span>
\n<\/span>2.<\/b> 127.0.0.0\/8<\/span>
\n<\/span>3.<\/b> 169.254.0.0\/16<\/span>
\n<\/span>4.<\/b> 224.0.0.0\/4<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b> The IPv4 range 169.254.0.0\/16 is reserved for link-local addressing. A device may automatically assign itself an address from this range when it cannot obtain a suitable IPv4 address through mechanisms such as DHCP. Link-local addresses are intended for communication on the local network segment and are not normally routed between networks. The 10.0.0.0\/8 range is a private IPv4 range, 127.0.0.0\/8 is reserved for loopback, and 224.0.0.0\/4 is associated with IPv4 multicast. Recognizing these address ranges is useful during network troubleshooting and configuration analysis.<\/span><\/p>\nQuestion: 65. Which protocol is commonly used to provide secure web communication?<\/b><\/p>\n\n- <\/b> HTTP<\/span>
\n<\/span>2.<\/b> HTTPS<\/span>
\n<\/span>3.<\/b> TFTP<\/span>
\n<\/span>4.<\/b> Telnet<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> HTTPS provides secure web communication by using HTTP over a protected TLS connection. TLS helps provide encryption, integrity, and authentication for communication between a client and a web server. This protects sensitive information such as login credentials and other data from being transmitted as plain text across the network. HTTP by itself does not provide the same transport-level encryption. TFTP is a lightweight file-transfer protocol, while Telnet provides remote terminal access without modern encryption. HTTPS is therefore widely used for websites, administrative interfaces, APIs, and other web-based services that require protected communication.<\/span><\/p>\nQuestion: 66. What is the primary purpose of a network management system (NMS)?<\/b><\/p>\n\n- <\/b> Replace all network switches<\/span>
\n<\/span>2.<\/b> Monitor and manage network infrastructure<\/span>
\n<\/span>3.<\/b> Provide electrical power to devices<\/span>
\n<\/span>4.<\/b> Convert IPv4 to IPv6 automatically<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> A Network Management System (NMS) provides centralized visibility and management capabilities for network infrastructure. Depending on the platform, an NMS can monitor device availability, interface utilization, errors, alerts, performance metrics, configuration information, and other operational data. It can help administrators identify problems and maintain awareness of network health. An NMS does not replace network switches, supply electrical power, or automatically perform all IPv4-to-IPv6 conversion. Instead, it works with network devices and management protocols to provide centralized operational information and, in some environments, configuration-management capabilities.<\/span><\/p>\nQuestion: 67. Which wireless frequency band is commonly associated with modern Wi-Fi networks?<\/b><\/p>\n\n- <\/b> 2.4 GHz<\/span>
\n<\/span>2.<\/b> 60 Hz<\/span>
\n<\/span>3.<\/b> 100 MHz<\/span>
\n<\/span>4.<\/b> 400 MHz<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> The 2.4 GHz frequency band is widely used by Wi-Fi networks and supports many common wireless devices. It can provide good coverage because signals at this frequency generally travel through obstacles better than higher-frequency signals, although it is also more susceptible to congestion and interference from other devices. Modern Wi-Fi technologies can also operate in 5 GHz and, depending on the standard and equipment, 6 GHz bands. The listed alternatives such as 60 Hz and 100 MHz are not typical Wi-Fi operating bands. Wireless planning should consider coverage, interference, channel availability, and client capabilities.<\/span><\/p>\nQuestion: 68. What is the main purpose of a wireless controller in an enterprise WLAN?<\/b><\/p>\n\n- <\/b> Manage and coordinate multiple wireless access points<\/span>
\n<\/span>2.<\/b> Replace every Ethernet switch<\/span>
\n<\/span>3.<\/b> Act as a public DNS server<\/span>
\n<\/span>4.<\/b> Convert MAC addresses into domain names<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> A wireless LAN controller can centrally manage and coordinate multiple wireless access points. Depending on the platform, it can provide centralized configuration, security settings, firmware management, radio-frequency management, client visibility, and other operational functions. Centralized management can simplify administration in larger wireless deployments because administrators do not need to configure every access point independently. A wireless controller does not replace all Ethernet switches, act as a public DNS server, or convert MAC addresses into domain names. Its primary purpose is to improve the centralized management and operation of enterprise wireless infrastructure.<\/span><\/p>\nQuestion: 69. Which type of cable uses light rather than electrical signals to transmit data?<\/b><\/p>\n\n- <\/b> Coaxial cable<\/span>
\n<\/span>2.<\/b> Twisted-pair copper<\/span>
\n<\/span>3.<\/b> Fiber-optic cable<\/span>
\n<\/span>4.<\/b> Console cable<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 3<\/span><\/p>\nExplanation:<\/b> Fiber-optic cable transmits data using light signals rather than electrical signals. This provides several advantages, including high bandwidth, long transmission distances, and strong resistance to electromagnetic interference. Fiber can be used in backbone connections, data centers, enterprise networks, and long-distance communication links. Twisted-pair copper uses electrical signaling, coaxial cable also uses electrical signaling, and console cables are generally used for device management. Fiber installations require appropriate transceivers, connectors, and optical components, and administrators must consider factors such as fiber type, distance, and supported optical standards when designing a network.<\/span><\/p>\nQuestion: 70. Which characteristic is generally associated with full-duplex Ethernet communication?<\/b><\/p>\n\n- <\/b> Devices can transmit and receive simultaneously<\/span>
\n<\/span>2.<\/b> Only one device can transmit at a time<\/span>
\n<\/span>3.<\/b> All frames are broadcast<\/span>
\n<\/span>4.<\/b> Collisions are required for communication<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b> Full-duplex Ethernet allows a device to transmit and receive data simultaneously over a network connection. Because both directions can operate at the same time, full-duplex communication does not require the traditional collision-detection behavior associated with half-duplex Ethernet. Modern switched Ethernet networks commonly use full-duplex links. Half-duplex communication permits transmission in only one direction at a time and historically required mechanisms to manage collisions on shared Ethernet media. Understanding duplex settings can be useful when diagnosing performance problems, interface errors, or unexpected negotiation behavior between connected network devices.<\/span><\/p>\nQuestion: 71. Which security technology can encrypt IP traffic between two network endpoints?<\/b><\/p>\n\n- <\/b> VLAN<\/span>
\n<\/span>2.<\/b> IPsec<\/span>
\n<\/span>3.<\/b> DHCP<\/span>
\n<\/span>4.<\/b> ARP<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 2<\/span><\/p>\nExplanation:<\/b> IPsec is a collection of protocols and mechanisms designed to secure IP communications. It can provide encryption, integrity protection, authentication, and other security functions depending on the configuration. IPsec is commonly used in VPN implementations to protect traffic between endpoints or network gateways across untrusted networks. VLANs provide logical network segmentation, DHCP provides network configuration, and ARP resolves IPv4 addresses to MAC addresses on local networks. IPsec therefore addresses the security of IP communications rather than basic addressing or Layer 2 segmentation. Correct configuration is important because incompatible security parameters can prevent successful communication.<\/span><\/p>\nQuestion: 72. What does packet loss indicate in a network?<\/b><\/p>\n\n- <\/b> Some packets fail to reach their intended destination<\/span>
\n<\/span>2.<\/b> Every packet is encrypted<\/span>
\n<\/span>3.<\/b> The network has unlimited bandwidth<\/span>
\n<\/span>4.<\/b> All routing tables are synchronized<\/span><\/li>\n<\/ol>\nCorrect Answer:<\/b> 1<\/span><\/p>\nExplanation:<\/b>