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| Section | Weight | Objectives |
|---|---|---|
| Security | 10% | - Firewall and access control principles - CIA triad and AAA model - Wireless security standards (WPA2/WPA3) - Common threats and vulnerabilities |
| Standards and Concepts | 20% | - Bandwidth, throughput, and latency - Common network protocols - Network topologies and types - OSI and TCP/IP models |
| Diagnosing Problems | 15% | - Command-line utilities (ping, traceroute, nslookup) - Packet capture and analysis basics - Remote access methods (SSH, RDP, console) - Troubleshooting methodology |
| Addressing and Subnet Formats | 20% | - IPv4 addressing and subnetting - Public vs private IP and NAT - Subnet mask and CIDR notation - IPv6 addressing and prefixes |
| Infrastructure | 20% | - Routing concepts and default gateway - Switching concepts and VLANs - Wireless access points and SSIDs - Network device ports and status indicators |
| Endpoints and Media Types | 15% | - Wired, wireless, and cellular technologies - Network cables and connectors - Connectivity verification tools - Endpoint devices and operating systems |
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NEW QUESTION # 88
At which OSI layer is the data stream broken up into segments that include source and destination port numbers?
Answer: D
Explanation:
The Transport layer breaks data into segments and adds source and destination port numbers so the receiving device can deliver the data to the correct application or service.
NEW QUESTION # 89
A user initiates a trouble ticket stating that an external web page is not loading. You determine that other resources both internal and external are still reachable.
Which command can you use to help locate where the issue is in the network path to the external web page?
Answer: B
Explanation:
The tracert command is used to determine the route taken by packets across an IP network. When a user reports that an external web page is not loading, while other resources are accessible, it suggests there might be an issue at a certain point in the network path to the specific web page. The tracert command helps to diagnose where the breakdown occurs by displaying a list of routers that the packets pass through on their way to the destination. It can identify the network segment where the packets stop progressing, which is valuable for pinpointing where the connectivity issue lies. References := Cisco CCST Networking Certification FAQs - CISCONET Training Solutions, Command Prompt (CMD): 10 network-related commands you should know, Network Troubleshooting Commands Guide: Windows, Mac & Linux - Comparitech, How to Use the Traceroute and Ping Commands to Troubleshoot Network, Network Troubleshooting Techniques: Ping, Traceroute, PathPing.
*tracert Command: This command is used to determine the path packets take to reach a destination. It lists all the hops (routers) along the way and can help identify where the delay or failure occurs.
*ping -t: This command sends continuous ping requests and is useful for determining if a host is reachable but does not provide path information.
*ipconfig /all: This command displays all current TCP/IP network configuration values and can be used to verify network settings but not to trace a network path.
*nslookup: This command queries the DNS to obtain domain name or IP address mapping, useful for DNS issues but not for tracing network paths.
References:
*Microsoft tracert Command: tracert Command Guide
*Troubleshooting Network Issues with tracert: Network Troubleshooting Guide
NEW QUESTION # 90
Which device operates at Layer 2 of the OSI model and forwards frames based on MAC addresses within a local network?
Answer: C
Explanation:
A switch operates at the Data Link layer, using MAC address tables to forward frames only to the intended recipient, improving efficiency and reducing unnecessary traffic compared to hubs.
NEW QUESTION # 91
HOTSPOT
You purchase a new Cisco switch, turn it on, and connect to its console port. You then run the following command:
For each statement about the output, select True or False. Note: You will receive partial credit for each correct selection.
Answer:
Explanation:
Explanation:
The two interfaces are administratively shut down:
False: The output does not show any "shutdown" command under the interfaces, which would indicate that they are administratively shut down. Therefore, they are likely in their default state, which is administratively up.
The two interfaces have default IP addresses assigned:
False: The output does not show any IP address configuration. In the default state, interfaces do not have IP addresses assigned unless explicitly configured.
The two interfaces can communicate over Layer 2:
True: By default, interfaces on a switch are Layer 2 interfaces capable of forwarding Ethernet frames. As there is no configuration provided that changes this, it can be assumed they can communicate over Layer 2.
Interface Status: The absence of the "shutdown" command means the interfaces are not administratively shut down.
IP Address Assignment: There is no evidence in the output that IP addresses have been assigned to the interfaces, which would typically be shown as "ip address" entries.
Layer 2 Communication: Switch interfaces in their default state operate at Layer 2, enabling them to forward Ethernet frames and participate in Layer 2 communication.
Reference: Cisco IOS Interface Configuration: Cisco Interface Configuration
Understanding Cisco Switch Interfaces: Cisco Switch Interfaces
NEW QUESTION # 92
A help desk technician receives the four trouble tickets listed below.
Which ticket should receive the highest priority and be addressed first?
Answer: A
Explanation:
When prioritizing trouble tickets, the most critical issues affecting business operations or high-impact activities should be addressed first.
Here's a breakdown of the tickets:
Ticket 1: Relocation of a printer, while necessary, is not urgent and does not impact critical operations.
Ticket 2: An ongoing webinar losing internet access is critical, especially if the webinar is time-sensitive and involves multiple participants.
Ticket 3: Slower response time for a cloud-based application is important but typically not as urgent as a complete loss of internet access for a live event.
Ticket 4: Wireless access down in the cafeteria affects users but does not have the same immediate impact as a live webinar losing connectivity.
Thus, the correct answer is B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.
Reference: =
IT Help Desk Best Practices
Prioritizing IT Support Tickets
NEW QUESTION # 93
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