HP Aruba ACNT HPE3-U01 New Questions

Aruba Certified Network Technician Exam (ACNT) Questions and Answers

Question 13

Which characteristic allows switches to mitigate collisions?

Options:

The switches support VLANs that segment the collision domains.

The switches use L3 protocols that eliminate collisions.

The switches' ports are independent collision domains.

The switches have proprietary features that help eliminate collisions.

Answer:

Explanation:

A collision occurs when two or more devices try to transmit data at the same time on a shared medium, such as a bus or a hub. Collisions degrade network performance and cause data loss. Switches mitigate collisions by creating separate collision domains for each port. This means that each port can transmit and receive data without interfering with other ports. Switches also use full-duplex communication, which allows simultaneous transmission and reception of data on each port, further reducing the chances of collisions. VLANs and L3 protocols do not affect collisions, as they operate at different layers of the network model. Proprietary features are not a general characteristic of switches, and may not be compatible with other vendors’ switches. References: Aruba Certified Network Technician (ACNT) | HPE Aruba Networking, Aruba Documentation Portal

Question 14

What are the differences between Local-based and Server-based management? (Select two.)

Options:

server-based management cannot talk to the device's control plane, local-based can

in local-based, the managed device is a client, while in server-based it is a server

local-based management can use the device's console port, server-based cannot

local-based management requires an on-premises network management appliance

server-based management can monitor multiple devices at once, local-based cannot

Answer:

C, E

Explanation:

Local-based management refers to managing a network device directly from the device itself, using tools such as console port, web interface, or command-line interface. Server-based management refers to managing a network device remotely from a centralized server, using tools such as Windows Admin Center, System Center, or Azure Arc123. The differences between these two types of management are:

Local-based management can use the device’s console port, which is a physical connection that allows access to the device even when the network is down or the device is not configured. Server-based management cannot use the console port, as it relies on network connectivity and protocols4.
Server-based management can monitor multiple devices at once, using a single dashboard or interface that shows the status, performance, and configuration of all the devices in the network. Local-based management can only monitor one device at a time, using the device’s own tools123.

References:

1: Cloud vs Server: Learn the Key Differences and Benefits - Parallels 2: Windows Server management overview | Microsoft Learn 4: 5 Benefits of Server-Based Local Access Networks for Small … - Versatech 3: What is Windows Admin Center | Microsoft Learn

Question 15

What is the goal of the TCP three-way handshake?

Options:

To notify the destination who the originator is.

To acknowledge the reception of the segments.

To establish a reliable, flow-controlled connection.

To notify the number of segments that will be sent.

Answer:

Explanation:

The TCP three-way handshake is a process that is used in a TCP/IP network to create a connection between a client and a server. It involves the exchange of three packets: SYN, SYN-ACK, and ACK. The goal of the TCP three-way handshake is to establish a reliable, flow-controlled connection between the two endpoints. This means that the connection is able to ensure that the data is transmitted without errors, losses, or duplications, and that the data is sent at a rate that both sides can handle.

The TCP three-way handshake works as follows:

The client initiates the connection by sending a SYN packet to the server. The SYN packet contains a random sequence number that indicates the starting point of the data that the client will send.
The server responds to the client by sending a SYN-ACK packet. The SYN-ACK packet contains the server’s own sequence number and an acknowledgment number that is equal to the client’s sequence number plus one. This indicates that the server has received the client’s SYN packet and is ready to receive data from the client.
The client completes the handshake by sending an ACK packet to the server. The ACK packet contains an acknowledgment number that is equal to the server’s sequence number plus one. This indicates that the client has received the server’s SYN-ACK packet and is ready to send data to the server.

After the TCP three-way handshake is completed, the connection is established and the data transfer can begin.

References: The answer can be verified by using the following resources:

TCP 3-Way Handshake Process - GeeksforGeeks
TCP 3-Way Handshake (SYN, SYN-ACK,ACK) - Guru99
Akamai Blog | What is a TCP Three-Way Handshake?
What is a Three-Way Handshake? - Definition from Techopedia
What is TCP 3-Way Handshake, Benefits, and Drawbacks? - Networking Signal

Question 16

Which message is an example of Broadcast communication?

Options:

DHCP offer

ICMP echo

HTTP Get

ARP Request

Answer:

Explanation:

Broadcast communication is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, using the electromagnetic spectrum (radio waves), in a one-to-many model1. A broadcast message is a message that is sent to all endpoints on the network, regardless of their address or identity2. An example of a broadcast message is an ARP request, which is used to find the MAC address of a device that has a specific IP address3. An ARP request is sent to the broadcast address of the network, which is usually the last address in the subnet (e.g., 192.168.1.255 for a /24 network). All devices on the network receive the ARP request and check if their IP address matches the one in the request. If so, they reply with their MAC address to the sender of the ARP request. If not, they ignore the request4. Therefore, an ARP request is an example of broadcast communication, while the other options are not. A DHCP offer is a message that is sent by a DHCP server to a specific client that requested an IP address5. An ICMP echo is a message that is sent by a device to test the connectivity and latency to another device. An HTTP Get is a message that is sent by a web browser to request a web page from a web server. These messages are not broadcast, but rather unicast, meaning they are sent to a single destination. References: 1: Broadcasting - Wikipedia 2: Broadcast communication network - Wikipedia 3: [Address Resolution Protocol - Wikipedia] 4: [How ARP Works - Cisco] 5: [DHCP - Wikipedia] : [Ping (networking utility) - Wikipedia] : [Hypertext Transfer Protocol - Wikipedia] : : resolution/13718-5.html : : :