DRAG DROP
Move each protocol from the list on the left to its correct example on the right.
Solution:
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.
✑ Assign the reserved IP address 10.10.10.200 to a web server at your company.
✑ Perform a ping to ensure that a server is responding to network connections.
✑ 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
Does this meet the goal?
Correct Answer:
A
HOTSPOT
You want to list the IPv4 addresses associated with the host name www.companypro.net.
Solution:
To list the IPv4 addresses associated with the host name www.companypro.net, you should use the following command:
nslookup www.companypro.net
This command will query the DNS servers to find the IP address associated with the hostname provided. If you want to ensure that it returns the IPv4 address, you can specify the -type=A option, which stands for Address records that hold IPv4 addresses1. However, the nslookup command by default should return the IPv4 address if available.
To list the IPv4 addresses associated with the host name www.companypro.net, you should use the nslookup command.
✑ Command: nslookup
✑ Target: www.companypro.net So, the completed command is:
✑ nslookup www.companypro.net
✑ nslookup: This command is used to query the Domain Name System (DNS) to obtain domain name or IP address mapping or for any other specific DNS record.
✑ www.companypro.net: This is the domain name you want to query to obtain its
associated IP addresses. References:
✑ Using nslookup: nslookup Command Guide
Does this meet the goal?
Correct Answer:
A
Which component of the AAA service security model provides identity verification?
Correct Answer:
C
The AAA service security model consists of three components: Authentication, Authorization, and Accounting.
•Authentication: This is the process of verifying the identity of a user or device. It ensures that only legitimate users can access the network or service.
•Authorization: This determines what an authenticated user is allowed to do or access within the network.
•Auditing/Accounting: This component tracks the actions of the user, including what resources they access and what changes they make.
Thus, the correct answer is C. Authentication. References :=
•Cisco AAA Overview
•Understanding AAA (Authentication, Authorization, and Accounting)
Which standard contains the specifications for Wi-Fi networks?
Correct Answer:
C
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.
References :=
•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
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An engineer configured a new VLAN named VLAN2 for the Data Center team. When the team tries to ping addresses outside VLAN2 from a computer in
VLAN2, they are unable to reach them. What should the engineer configure?
Correct Answer:
C
When devices within a VLAN are unable to reach addresses outside their VLAN, it typically indicates that they do not have a configured path to external networks. The engineer should configure a default gateway for VLAN2. The default gateway is the IP address of the router??s interface that is connected to the VLAN, which will route traffic from the VLAN to other networks12.
References :=
•Understanding and Configuring VLAN Routing and Bridging on a Router Using the IRB Feature
•VLAN 2 not able to ping gateway - Cisco Community
=========================
•VLANs: Virtual Local Area Networks (VLANs) logically segment network traffic to improve security and performance. Devices within the same VLAN can communicate directly.
•Default Gateway: For devices in VLAN2 to communicate with devices outside their VLAN, they need a default gateway configured. The default gateway is typically a router or Layer 3 switch that routes traffic between different VLANs and subnets.
•Additional VLAN: Not needed in this scenario as the issue is related to routing traffic outside VLAN2, not creating another VLAN.
•Default Route: While a default route on the router may be necessary, the primary issue for devices within VLAN2 is to have a configured default gateway.
•Static Route: This is used on routers to manually specify routes to specific networks but does not address the need for a default gateway on the client devices.
References:
•Cisco VLAN Configuration Guide: Cisco VLAN Configuration
•Understanding and Configuring VLANs: VLANs Guide
