Cisco 100-150 Valid Study Notes | 100-150 Practice Questions

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Cisco 100-150 Exam Syllabus Topics:

SectionWeightObjectives
Diagnosing Problems20%- Troubleshooting
  • 1. Connectivity testing tools
  • 2. Common network issues
  • 3. Help desk best practices
  • 4. Troubleshooting methodology
Networking Standards and Concepts23%- Network Fundamentals
  • 1. Network types and topologies
  • 2. Bandwidth and throughput
  • 3. OSI and TCP/IP models
  • 4. Protocols and ports
Endpoints and Media Types20%- Network Devices and Media
  • 1. Routers and switches
  • 2. Endpoint device roles
  • 3. Wireless technologies
  • 4. Copper and fiber media
Addressing and Subnets20%- IP Addressing
  • 1. IPv4 addressing
  • 2. Private and public addressing
  • 3. Subnetting concepts
  • 4. IPv6 basics
Network Infrastructures17%- Infrastructure Components
  • 1. Network services
  • 2. LAN and WAN concepts
  • 3. Basic network security concepts
  • 4. Cloud and virtualization basics

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Cisco Certified Support Technician (CCST) Networking Sample Questions (Q39-Q44):

NEW QUESTION # 39
How does a firewall determine which traffic to block?

Answer: C

Explanation:
A firewall applies rules to traffic by examining packet details such as source and destination IP addresses. It uses those matching criteria to decide whether the traffic should be permitted or blocked.


NEW QUESTION # 40
In the network shown in the following graphic, Switch1 is a Layer 2 switch.

PC-A sends a frame to PC-C. Switch1 does not have a mapping entry for the MAC address of PC-C.
Which action does Switch1 take?

Answer: C

Explanation:
In a network, when a Layer 2 switch (like Switch1) receives a frame destined for a MAC address that is not in its MAC address table, it performs a flooding operation. This means the switch will send the frame out of all ports except the port on which the frame was received. This flooding ensures that if the destination device is connected to one of the other ports, it will receive the frame and respond, allowing the switch to learn its MAC address.
A). Switch1 queries Switch2 for the MAC address of PC-C: This does not happen in Layer 2 switches; they do not query other switches for MAC addresses.
A). Switch1 drops the frame and sends an error message back to PC-A: This is not the default behavior for unknown unicast frames.
D). Switch1 sends an ARP request to obtain the MAC address of PC-C: ARP is used by devices to map IP addresses to MAC addresses, not by switches to find unknown MAC addresses.
Thus, the correct answer is
B). Switch1 floods the frame out all active ports except port G0/1.
Reference: =
Cisco Layer 2 Switching Overview
Switching Mechanisms (Cisco)


NEW QUESTION # 41
Which standard contains the specifications for Wi-Fi networks?

Answer: D

Explanation:
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


NEW QUESTION # 42
Move each protocol from the list on the left to its correct example on the right.

Answer:

Explanation:

Explanation:
The correct matching of the protocols to their examples is as follows:
* DHCP: Assign the reserved IP address 10.10.10.200 to a web server at your company.
* DNS: Perform a query to translate companypro.net to an IP address.
* ICMP: Perform a ping to ensure that a server is responding to network connections.
Here's how each protocol corresponds to its example:
* DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses to devices on a network. In this case, DHCP would be used to assign the reserved IP address 10.10.10.200 to a web server.
* DNS (Domain Name System) is used to translate domain names into IP addresses. Therefore, to translate companypro.net to an IP address, DNS would be utilized.
* ICMP (Internet Control Message Protocol) is used for sending error messages and operational information indicating success or failure when communicating with another IP address. An example of this is using the ping command to check if a server is responding to network connections.
These protocols are essential for the smooth operation of networks and the internet.
* Perform a query to translate companypro.net to an IP address.
* DNS (Domain Name System): DNS is used to resolve domain names to IP addresses.
* Assign the reserved IP address 10.10.10.200 to a web server at your company.
* DHCP (Dynamic Host Configuration Protocol): DHCP is used to assign IP addresses to devices on a network.
* Perform a ping to ensure that a server is responding to network connections.
* ICMP (Internet Control Message Protocol): ICMP is used by network devices to send error messages and operational information, and it is the protocol used by the ping command.
* DNS (Domain Name System): DNS translates human-friendly domain names like "companypro.net" into IP addresses that computers use to identify each other on the network.
* DHCP (Dynamic Host Configuration Protocol): DHCP automatically assigns IP addresses to devices on a network, ensuring that no two devices have the same IP address.
* ICMP (Internet Control Message Protocol): ICMP is used for diagnostic or control purposes, and the ping command uses ICMP to test the reachability of a host on an IP network.
References:
* DNS Basics: What is DNS?
* DHCP Overview: What is DHCP?
* ICMP and Ping: Understanding ICMP


NEW QUESTION # 43
What is the purpose of VLANs in a switched network environment within an enterprise organization?

Answer: A

Explanation:
VLANs logically divide a network into separate broadcast domains, improving security, performance, and management without requiring additional physical infrastructure.


NEW QUESTION # 44
......

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