Author: examcert

Set Up and Verify Networking in Android (37.4.8) Like Apple iOS, network connectivity on an Android device can be verified by attempting to reach a website or an online application. If the connection fails, verify that you have a reliable connection to your cellular data provider. If you are attempting to connect over Wi-Fi, be…

Linux Network Setup (37.4.3) Verifying IP settings using the GUI on a Linux machine will differ depending on the Linux distribution (distro) and desktop interface. Figure 37-31 shows the Connection Information dialog box on the Ubuntu distro running the Gnome desktop. Figure 37-31 Viewing the Ubuntu Connection Information Technicians most often prefer to use the…

To gather symptoms from a networking device that is suspected to have issues, use Cisco IOS commands (see Table 37-5) and other tools such as packet captures and device logs. Table 37-5 Cisco IOS Commands for Gathering Information Analyze the Information (37.3.10) Now that the trouble ticket has been created and information has been gathered,…

Gather Information for Host-Related Tickets (37.3.8)The ticketing system often includes sections for entering host-related information. These fields are often completed during the “Gather Information” step of the troubleshooting life cycle.Useful host-related information includes Additional information that can be captured from a host includes Beep CodesEach BIOS manufacturer has a unique beep sequence, a combination of…

Active Listening (37.3.6) To better understand the problem reported by the user, practice active listening skills. Allow the customer to tell the whole story. During the time that the customer is explaining the problem, occasionally interject some small word or phrase, such as “I understand,” “Yes,” “I see,” or “Okay.” This behavior lets the customer…

Ticketing Systems (37.3.3) Help desk ticketing systems help organizations manage user problems or requests. Ticketing software is specifically designed to ensure that corporate users or clients receive support in a timely and systematic manner. They also ensure that all tickets get noticed and addressed. A shared mailbox is an alternative method that can be used…

Packet Tracer—Use CDP to Map a Network (37.2.12) A senior network administrator requires you to map the Remote Branch Office network and discover the name of a recently installed switch that still needs an IPv4 address to be configured. Your task is to create a map of the branch office network. To map the network,…

Discover Devices Using CDP (37.2.11) Consider the lack of documentation in the topology shown in Figure 37-20. The network administrator only knows that R1 is connected to another device. Figure 37-20 R1 Topology Before Discovery With CDP enabled on the network, the show cdp neighbors command can be used to determine the network layout, as…

Establish a Network Baseline (37.2.9)The purpose of network monitoring is to watch network performance in comparison to a predetermined baseline. A baseline is used to establish normal network or system performance to determine the “personality” of a network under normal conditions.Establishing a network performance baseline requires collecting performance data from the ports and devices that…

Wireless Standards (37.2.6) The world of wireless communications is vast. However, for particular job-related skills, we want to focus on specific aspects of Wi-Fi. The best place to start is with the IEEE 802.11 WLAN standards. These standards define how radio frequencies are used for wireless links. Most of the standards specify that wireless devices…