Network Fundamentals and Troubleshooting

Backbone Cabling

Vertical Cross Connect: Component of backbone cabling running between building floors.

Email Protocols

SMTP (Simple Mail Transfer Protocol): Used to send email messages to the first server.

Network Terminology

"Network of Networks": Also referred to as a backbone.

Router Categories

Consumer-Grade Router: Suitable for establishing network connections at a personal property.

Wi-Fi Frequency Ranges

5.925 GHz-7.125 GHz: Frequency range that can help resolve network fluctuation issues for video streaming, allowing devices to utilize maximum bandwidth and increase throughput.

Network Setup and Organization

Patch Panels: Used to connect and organize lines running from walls to racks to network devices when setting up a network connection at a university.

IPv4 Addressing

32-bit IPv4 Address: Organized into four groups of 8 bits each.
IPv4 Structure: The first part of an IPv4 address identifies the network, and the last part identifies the host. (This is the opposite of what the question states.)

Software Upgrade Reversal

Operating System Patch: Uses the patch's automatic uninstall utility for reversing a software upgrade.

OSI Model

Layer 4 (Transport Layer): Adds a header in front of the payload in the OSI model.

Help Desk Software

Purpose: To document problems and their resolutions and to accumulate insights and solutions to problems encountered on a particular network.

Terminal Emulators

Telnet: Suitable terminal emulator for an intern new to the job due to its simplicity.

Network Protocols

ICMP (Internet Control Message Protocol): Used by the echo request and echo reply of ping to carry error messages and information about a network.

Port Ranges

Dynamic and Private Ports: Ports ranging from 49152 to 65535, open for use without restriction.

Troubleshooting Aberrant Application Behavior

First Point of Action: Identify why the application is behaving in this manner and the symptoms behind such behavior.

Transceivers

SFP+: Supports up to 10 Gbps.

Powering Devices over Ethernet

Cat 5: Should be selected to power up the device using an Ethernet cable.

Network Diagrams

Network Diagram: A graphical representation of network devices and connections.

Bend Radius of Twisted-Pair Cable

Bend Radius Calculation: If a twisted-pair cable has a diameter of 0.8 cm, the bend radius of the cable should be 1.6 cm to avoid impaired data transmission.

802.11 Wireless Networks

Trailer: The field of the 802.11 data frame this check will run in.

SSH File Transfer

Port 22: Used to set up a file transfer version of SSH so that you can use a single channel to control both inbound and outbound communications.

DNS Record Types

AAAA Records: DNS record type that holds the name-to-address mapping for IPv6 addresses.

Wireless Communication Errors

Interference: Seems to be the cause of wireless communication errors when operating adjacent to heavy machinery.

Twisted-Pair Wires

UTP (Unshielded Twisted Pair): Consists of one or more insulated twisted-pair wires encased in a plastic sheath.

Cables for Long-Distance Connections

Fiber Optic Cable: Should be selected for optimum speed and bandwidth.

Network Issues from Service Provider's End

Main Distribution Frame (MDF): The first check point to ensure that there are no network issues from the service provider's end.

Wireless Connection Through Bluetooth

2.4 GHz-2.4835 GHz: The frequencies in the wireless spectrum will you use to successfully enable this connection

Destination Host IP Address

Network Layer: Identify the IP address of the destination host.

Change Management Procedures

Change management procedures should consist of preparing a backup plan as well.

Remote Access to Linux Server

SSH: Protocol applied in this case.

Malfunctioning Routers

Traceroute or Tracert: The most feasible option for locating malfunctioning routers.

Email Service Protocols

POP3: Harry should use POP3 to deliver the message.

Manufacturer's OUI Assignment

IEEE: Institutions assigns a manufacturer's OUI.

TCP Protocol Characteristics

Sequencing: Characteristics of the TCP protocol James should check to fix this error.

Wireless Signal Obstruction

Diffraction: The phenomenon where a wireless signal is split into secondary waves, when it encounters an obstruction.

Classful Addressing

Class D: will you apply to deliver the requirement?

Fast Ethernet Function

Pin 1: With which of the following pin numbers would you associate a white/orange T568A color Fast Ethernet function?

Contract Agreements

MSA: A contract that defines the terms of future contracts between parties, such as payment terms or arbitration arrangements?

Fiber Optic Cable Repair

Fusion Splicer: Which of the following kits will you require in this scenario?

Transceivers

SFP+: Which of the following transceivers should Monica use when the maximum transmission speed is of 8 Gbps?

Application Ports

Well-known ports: applications such as Telnet, FTP, and HTTP

Network TroubleShooting

ping 8.8.8.8: Analyze which of the following addresses Liam should visit to ensure that the network connection has been successful.

Cables

Rollover cable: cabless will you choose to connect the console port of the router to the computer?

Ethernet

1000BASE-LX: Analyze and discuss which of the following fiber Ethernet standards he should follow under such circumstances.

Networking

A network operating system is much more expensive than a desktop operating system: In this scenario, which of the following statements would be the appropriate reason for Pisces Ltd. to opt for a peer-to-peer network model according to you?

Remote Access

Port 3389: Which of the following ports will you use to establish this connection?

Domain Names

.biz: Analyze which of the following top level domain names Angela should opt for under such requirements.

Cabling

White/green: What color wire will you insert into the third pin of an RJ-45 plug in such an establishment?

Equipment

A rack diagram: Which of the following diagrams is needed while tracking and troubleshooting equipment installed in a rack?

Network

IBSS: Which of the following topologies uses a small number of nodes closely positioned together to transmit directly to each other without an intervening connectivity device?

Data transmission

Unicast address: Which of the following types of IPv6 addresses would you apply in such a situation?

Troubleshooting

Organizationally Unique Identifier: address will help you to identify the manufacturer of the NIC?

Cable repair

It will increase the possibility of noise interference, which will affect the network's signals: Analyze what the consequence of Kyle's error will be.

Multiplexing Types

TDM: Which of the following multiplexing types divides a channel into multiple intervals of time, or time slots?

Wlan Network

IBSS: Which of the following will you use for this purpose?

Port Details

netstat -a: Which of the following commands will you apply to list all current TCP connections and an all listening TCP and UDP ports?

Network Security

An email can be downloaded to the client computer using POP3: Which of the following statements stands true?

EAP Process

EAP-TLS: Which of the following versions of EAP will you use in this scenario?

Networking

Wrong SSID: Analyze which of the following issues Charlie might be encountering in this scenario.

Network Field

Spectrum analyzer: Which of the following devices will you carry in this situation?

Fiber-Optic

OPM: measures the amount of light power transmitted on a fiber-optic line?

Computers

Terminal emulation: Which of the following remote access methods allows a remote client to take over and command a host computer?

Wireless Technology

ANT+: Which wireless technology is used to track fitness activity levels and geographic movement?

Network Connection

Full-duplex: Which of the following would you choose in this scenario so that there is no failed or slow transmission for the radio network?

Network Administrator

netstat: Analyze which of the following utilities should Robert use to determine the traffic going in and out of each NIC.

Connections on a host

netstat: utilities would you use to display TCP/IP components and connections on a host?

Bluetooth communication

2.4 GHz-2.4835 GHz: What is the frequency range for Bluetooth communication?

Bandwith

Cat 6a: Which of the TIA/EIA 568 standard twisted-pair cables will you use to carry out this operation without having to go through the equipment changes?

Cabling

100 Mbps (Fast Ethernet): What is the maximum supported bandwidth for a Category 5 twisted-pair cable specified under TIA/EIA-568 standards?

Session Presentation

L7PDU: What other technical name or PDU can be used to represent the session presentation and application layer?

LAN Device

MAC address: Analyze which of the following addressing methods Matt should follow so that the switch can quickly and efficiently direct the network traffic to its destination.

Adresses

169.254.0.1: Which of the following addresses can be identified as an APIPA address?

Cables

Plenum cable: Which of the following cables comes coated with a flame-resistant jacket?

Broadband Connection

VolP: Which of the following protocols would you apply in such a scenario?

Security Threats

WPA attack: Which of the following security threats involves an interception of the network keys communicated between clients and access points?

*Network segment

SAN: Which of the following consists of high capacity data storage devices in a distinctly defined network segment?