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100-150是Cisco認證考試，所以通過100-150是踏上Cisco 認證的第一步。也因此100-150認證考試變得越來越火熱，參加100-150考試的人也越來越多，但是100-150認證考試的通過率並不是很高。當你選擇100-150考試時有沒有選擇相關的考試課程？
問題 #55
Which standard contains the specifications for Wi-Fi networks?
答案：A
解題說明：
The IEEE 802.11 standard contains the specifications for Wi-Fi networks. It is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in various frequencies, including but not limited to 2.4 GHz, 5 GHz, and 6 GHz1. This standard is maintained by the Institute of Electrical and Electronics Engineers (IEEE) and is commonly referred to as Wi-Fi. The standard has evolved over time to include several amendments that improve speed, range, and reliability of wireless networks.
Reference: =
* The Most Common Wi-Fi Standards and Types, Explained
* 802.11 Standards Explained: 802.11ax, 802.11ac, 802.11b/g/n, 802.11a
* Wi-Fi Standards Explained - GeeksforGeeks
問題 #56
A user reports that a company website is not available. The help desk technician issues a tracert command to determine if the server hosting the website is reachable over the network.
The output of the command is shown as follows:
What can you tell from the command output?
答案：A
解題說明：
The tracert command output shows the path taken to reach the destination IP address, 192.168.1.10.
The command output indicates:
* Hops 1 and 2 are successfully reached.
* Hop 3 times out, meaning the router at hop 3 did not respond to the tracert request.
However, this does not necessarily indicate a problem with forwarding packets, as some routers may be configured to block or not respond to ICMP requests.
* Hops 4 and 5 are successfully reached, with hop 5 being the destination IP 192.168.1.10, indicating that the server is reachable.
Thus, the correct answer is C. The server with the address 192.168.1.10 is reachable over the network.
Reference: =
* Cisco Traceroute Command
* Understanding Traceroute
The tracert command output indicates that the server with the address 192.168.1.10 is reachable over the network. The asterisk (*) at hop 3 suggests that the probe sent to that hop did not return a response, which could be due to a variety of reasons such as a firewall blocking ICMP packets or the router at that hop being configured not to respond to ICMP requests. However, since the subsequent hops (4 and 5) are showing response times, it means that the packets are indeed getting through and the server is reachable12.
Reference: =
* How to Use Traceroute Command to Read Its Results
* How to Use the Tracert Command in Windows
問題 #57
Which address is included in the 192.168.200.0/24 network?
答案：B
解題說明：
* 192.168.200.0/24 Network: This subnet includes all addresses from 192.168.200.0 to 192.168.200.255.
The /24 indicates a subnet mask of 255.255.255.0, which allows for 256 addresses.
* 192.168.199.13: This address is in the 192.168.199.0/24 subnet, not the 192.168.200.0/24 subnet.
* 192.168.200.13: This address is within the 192.168.200.0/24 subnet.
* 192.168.201.13: This address is in the 192.168.201.0/24 subnet, not the 192.168.200.0/24 subnet.
* 192.168.1.13: This address is in the 192.168.1.0/24 subnet, not the 192.168.200.0/24 subnet.
Reference: * Subnetting Guide: Subnetting Basics
問題 #58
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.
答案：
解題說明：
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.
References :=
* 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.
References:
* Using the ping Command: ping Command Guide
問題 #59
Which address is included in the 192.168.200.0/24 network?
答案：B
解題說明：
*192.168.200.0/24 Network: This subnet includes all addresses from 192.168.200.0 to 192.168.200.255. The
/24 indicates a subnet mask of 255.255.255.0, which allows for 256 addresses.
*192.168.199.13: This address is in the 192.168.199.0/24 subnet, not the 192.168.200.0/24 subnet.
*192.168.200.13: This address is within the 192.168.200.0/24 subnet.
*192.168.201.13: This address is in the 192.168.201.0/24 subnet, not the 192.168.200.0/24 subnet.
*192.168.1.13: This address is in the 192.168.1.0/24 subnet, not the 192.168.200.0/24 subnet.
References:
*Subnetting Guide: Subnetting Basics
問題 #60
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Cisco 100-150認證考試在競爭激烈的IT行業中越來越受歡迎，報名參加考試的人越來越多。但是它的難度並沒有減小，依然很難通過考試，畢竟這是個權威的檢驗電腦專業知識和資訊技術能力的考試。一般人為了通過Cisco 100-150 認證考試都需要花費大量的時間和精力來復習備考。
100-150考試: https://www.kaoguti.com/100-150_exam-pdf.html
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