Pass the HP Aruba ACNT HPE3-U01 Questions and answers with CertsForce

To convert a hexadecimal number to a binary number, we need to follow these steps:

Write down the hexadecimal number and assign a power of 16 to each digit, starting from the rightmost with 16^0.

Convert each hexadecimal digit to its decimal equivalent by multiplying it with its power of 16.

Add all the decimal values to get the decimal equivalent of the hexadecimal number.

Divide the decimal number by 2 repeatedly and write down the remainders from bottom to top.

The binary number is the sequence of remainders obtained in the previous step.

Let’s apply these steps to the hexadecimal number 17:

17 = 1 × 16^1 + 7 × 16^0

17 = 16 + 7

17 = 23 in decimal

23 / 2 = 11 with remainder 1

11 / 2 = 5 with remainder 1

5 / 2 = 2 with remainder 1

2 / 2 = 1 with remainder 0

1 / 2 = 0 with remainder 1

The binary number is 10111

Therefore, the binary equivalent of the hexadecimal number 17 is 10111 (option B).

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

Hexadecimal to Binary Converter - Binary Hex Converters

How to Convert 17 from hexadecimal to binary - Calculator Online

Convert hexadecimal number 17 to binary - CoolConversion

17 in Binary - How to Convert 17 from Decimal to Binary? - Cuemath

According to the Ethernet cable standards, Cat 6 UTP-based cabling can support 1 Gbps data rates up to 100 meters (328 feet) of cable length. This is the maximum recommended distance for a single cable run between a host and the switch where it is plugged in. If the cable length exceeds 100 meters, the signal quality may degrade and cause errors or lower performance. Cat 6 UTP-based cabling can also support 10 Gbps data rates up to 37-55 meters (121-180 feet), depending on the alien crosstalk atmosphere. However, for 10 Gbps data rates, Cat 6a UTP-based cabling is preferred, as it can support the full 100 meters of cable length. References https://networkengineering.stackexchange.com/questions/81114/degradation-of-signal-quality-as-a-function-of-cat-6-cable-length

https://www.howtogeek.com/813419/how-long-can-an-ethernet-cable-be/

The IP address 10.0.128.0/23 is a Class A private address with a subnet mask of 255.255.254.0. This means that the network prefix is 10.0.128.0 and the host identifier is the last 9 bits of the address. To find the number of IP assignable addresses, we need to subtract 2 from the total number of possible hosts, which is29=512. This is because the network address (10.0.128.0) and the broadcast address (10.0.129.255) are reserved and cannot be assigned to any host. Therefore, the number of IP assignable addresses is 512 - 2 = 510.References:IP Subnet Calculator,CIDR Calculator for IPv4 addresses,Free online IPv4 subnet calculator

 A collision occurs when two or more devices try to transmit data at the same time on a shared medium, such as a cable or a wireless channel. Collisions result in corrupted or lost data, and reduce the efficiency of the network. Different connection types have different susceptibility to collisions, depending on how they handle data transmission and collision detection.

Dark fiber and fiber are optical connections that use light to transmit data. They are immune to electromagnetic interference and have very high bandwidth. They also use full-duplex communication, which means that data can be sent and received simultaneously on separate fibers. Therefore, collisions are very unlikely to happen on dark fiber and fiber connections.

Copper is an electrical connection that uses metal wires to transmit data. It is prone to electromagnetic interference and has lower bandwidth than optical connections. It can use either half-duplex or full-duplex communication, depending on the device and the protocol. Half-duplex communication means that data can only be sent or received at a time on the same wire. Therefore, collisions are more likely to happen on copper connections that use half-duplex communication, such as Ethernet hubs.

Wi-Fi is a wireless connection that uses radio waves to transmit data. It is also prone to electromagnetic interference and has lower bandwidth than optical connections. It uses half-duplex communication, which means that data can only be sent or received at a time on the same channel. Therefore, collisions are very likely to happen on Wi-Fi connections, especially when there are many devices using the same channel or frequency.

References:

Types of Collisions

What are elastic and inelastic collisions?

Why is a switch port a collision domain?

In order to allow inter-PC communication in the same broadcast domain, both switches need to have the same VLAN configured on the ports that connect to the PCs and the trunk port that connects to each other. Option B shows the correct configuration for both switches, as follows:

On Switch-1, interface 0/1 is configured as an access port on VLAN 10, which matches the VLAN of PC-1. Interface 0/2 is configured as a trunk port, which allows VLAN 10 traffic to pass through to Switch-2.

On Switch-2, interface 0/1 is configured as an access port on VLAN 10, which matches the VLAN of PC-2. Interface 0/2 is also configured as a trunk port, which allows VLAN 10 traffic to pass through from Switch-1.

Option A is incorrect because it does not configure the trunk port on Switch-2, which prevents VLAN 10 traffic from reaching Switch-1. Option C is incorrect because it configures the trunk port on Switch-1 with the wrong encapsulation mode (ISL instead of dot1q), which causes a mismatch with Switch-2. Option D is incorrect because it configures the access ports on Switch-2 with the wrong VLAN (20 instead of 10), which isolates PC-2 from PC-1.

References:

1: Layer 2 VLAN Configuration on a Cisco Switch (with Example) - Networks Training 2: VLAN Configuration Commands Step by Step Explained - Computer Networking Notes 3: How To Configure VLANs On the Catalyst Switches - Cisco Community 4: Configure VLAN on Cisco Switch Using Cisco Packet Tracer - TECHNIG

To establish a secure web connection to YouTube.com, the computer will run two protocols: DNS and HTTPS. DNS (Domain Name System) is a protocol that translates domain names into IP addresses, which are used to identify and locate web servers on the internet. HTTPS (Hypertext Transfer Protocol Secure) is a protocol that encrypts and authenticates data transfer between a web browser and a web server, ensuring the security and integrity of the communication.

The computer does not need to run DHCP (Dynamic Host Configuration Protocol), FTP (File Transfer Protocol), or HTTP5 (a non-existent protocol) to connect to YouTube.com. DHCP is a protocol that assigns IP addresses to devices on a network automatically, but the computer already has a static address configured. FTP is a protocol that transfers files between a client and a server, but it is not used for web browsing. HTTP5 is not a valid protocol name, and it is likely a typo for HTTP (Hypertext Transfer Protocol), which is the unsecure version of HTTPS. References:

Aruba Certified Network Technician (ACNT) | HPE Aruba Networking

6 Network Security Protocols You Should Know | Cato Networks

What is HTTPS? | Cloudflare

The 051 Model is a reference model that describes how data communications occur on a network using five layers: physical, data link, network, transport, and application. The 051 Model is based on the OSI Model, which has seven layers, but it simplifies the presentation and session layers into the application layer. The 051 Model is used to understand the functions and interactions of different network components, such as devices, protocols, and services. Each layer of the 051 Model has a specific role and responsibility in the data communication process, as follows:

The physical layer defines the electrical and mechanical characteristics of the transmission medium, such as cables, connectors, and signals. It also determines how data is encoded into bits and transmitted over the medium.

The data link layer defines the rules and methods for accessing and sharing the transmission medium among multiple devices. It also provides error detection and correction mechanisms to ensure reliable data delivery.

The network layer defines the logical addressing and routing schemes for data packets across different networks. It also provides congestion control and fragmentation/reassembly functions to optimize network performance.

The transport layer defines the end-to-end communication and reliability services for data segments between applications. It also provides flow control and multiplexing/demultiplexing functions to manage data streams.

The application layer defines the protocols and services that enable user applications to exchange data over the network. It also provides functions such as encryption, authentication, and compression to enhance data security and efficiency.

References:

051 Model

OSI Model

Network Fundamentals

To convert a binary number to a decimal number, we need to follow these steps:

Write down the binary number and assign a power of 2 to each digit, starting from the rightmost with 2^0.

Convert each binary digit to its decimal equivalent by multiplying it with its power of 2.

Add all the decimal values to get the decimal equivalent of the binary number.

Let’s apply these steps to the binary number 10001010:

10001010 = 0 × 2^0 + 1 × 2^1 + 0 × 2^2 + 1 × 2^3 + 0 × 2^4 + 0 × 2^5 + 0 × 2^6 + 1 × 2^7

10001010 = 0 + 2 + 0 + 8 + 0 + 0 + 0 + 128

10001010 = 138 in decimal

Therefore, the decimal equivalent of the binary number 10001010 is 138 (option A).

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

Convert 10001010 from binary to decimal - Calculator Online

How to Convert decimal number 10001010 in binary? - CoolConversion

10001010 to decimal - Calculatio

Binary Code | Binary: 10001010 | Decimal: 138 | Bits: 8