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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Addressing and Subnet Formats | 20% | - Public vs private IP and NAT - Subnet mask and CIDR notation - IPv4 addressing and subnetting - IPv6 addressing and prefixes |
| Topic 2: Endpoints and Media Types | 15% | - Network cables and connectors - Wired, wireless, and cellular technologies - Endpoint devices and operating systems - Connectivity verification tools |
| Topic 3: Diagnosing Problems | 15% | - Command-line utilities (ping, traceroute, nslookup) - Troubleshooting methodology - Packet capture and analysis basics - Remote access methods (SSH, RDP, console) |
| Topic 4: Security | 10% | - CIA triad and AAA model - Firewall and access control principles - Common threats and vulnerabilities - Wireless security standards (WPA2/WPA3) |
| Topic 5: Infrastructure | 20% | - Network device ports and status indicators - Routing concepts and default gateway - Switching concepts and VLANs - Wireless access points and SSIDs |
| Topic 6: Standards and Concepts | 20% | - Network topologies and types - Bandwidth, throughput, and latency - OSI and TCP/IP models - Common network protocols |
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NEW QUESTION # 58
What is the primary purpose of a firewall in a network security architecture within an organization?
Answer: A
Explanation:
A firewall controls incoming and outgoing traffic based on security rules, helping protect networks from unauthorized access and potential cyber threats.
NEW QUESTION # 59
HOTSPOT
Computers in a small office are unable to access companypro.net. You run the ipconfig command on one of the computers.
The results are shown in the exhibit.
You need to determine if you can reach the router.
Which command should you use? Complete the command by selecting the correct options from each drop-down lists.
Answer:
Explanation:
Explanation:
To determine if you can reach the router, you should use the ping command followed by the IP address of the router. The ping command is a network utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer.
The Default Gateway in the ipconfig results is typically the router's IP address in a home or small office network. In this case, the Default Gateway is 192.168.0.1, which is the address you would ping to check connectivity to the router.
Reference: =
How to Use the Ping Command
Testing Network Connectivity with the Ping Command
To determine if you can reach the router, you should use the ping command with the IP address of the router.
Command: ping
Target: 192.168.0.1
So, the completed command is:
ping 192.168.0.1
Step by Step Comprehensive and Detailed Explanation.
ping: The ping command sends ICMP Echo Request messages to the target IP address and waits for an Echo Reply. It is commonly used to test the reachability of a network device.
192.168.0.1: This is the IP address of the default gateway (the router) as shown in the ipconfig output. Pinging this address will help determine if the computer can communicate with the router.
Reference: Using the ping Command: ping Command Guide
NEW QUESTION # 60
During the data encapsulation process, which OSI layer adds a header that contains MAC addressing information and a trailer used for error checking?
Answer: D
Explanation:
OSI model
During the data encapsulation process, the Data Link layer of the OSI model is responsible for adding a header that contains MAC addressing information and a trailer used for error checking. The header typically includes the source and destination MAC addresses, while the trailer contains a Frame Check Sequence (FCS) which is used for error detection1.
The Data Link layer ensures that messages are delivered to the proper device on a LAN using hardware addresses and translates messages from the Network layer into bits for the Physical layer to transmit. It also controls how data is placed onto the medium and is received from the medium through the physical hardware.
References :=
* The OSI Model - The 7 Layers of Networking Explained in Plain English
* OSI Model - Network Direction
* Which layer adds both header and trailer to the data?
* What is OSI Model | 7 Layers Explained - GeeksforGeeks
NEW QUESTION # 61
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 # 62
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: D
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 # 63
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