CCNA Questions

Started by certforumz, March 13, 2022, 11:24:49 PM

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certforumz

#1
February 23, 2023, 12:09:53 PM
Q. What command is used to set a console password on a Cisco IOS router?

A. password console
B. line vty 0 4 password
C. line console 0 password
D. enable secret

Answer: C. line console 0 password

Explanation: To set a console password on a Cisco IOS router, the line console 0 command is used to access the console line configuration mode, followed by the password command to set the password. The correct syntax is line console 0 followed by password <password>. Option A is not a valid command, Option B sets a password for virtual terminal lines, and Option D sets the enable secret password, which is used to protect privileged EXEC mode.


Q: Which cloud computing model is dedicated to a single organization?

A. Public Cloud
B. Private Cloud
C. Hybrid Cloud
D. Community Cloud

Answer: B. Private Cloud

Explanation: A private cloud is a cloud computing environment that is dedicated to a single organization. It is designed to provide similar benefits as public clouds, such as scalability, flexibility, and on-demand computing resources, but with added security and control. Private clouds are owned and operated by the organization, either on-premises or in a data center, and are not shared with other organizations. Option A (Public Cloud) is a cloud computing environment that is available to the general public or a large industry group. Option C (Hybrid Cloud) is a cloud computing environment that combines both public and private cloud models. Option D (Community Cloud) is a cloud computing environment that is shared by several organizations with similar interests or requirements.

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certforumz

#2
February 24, 2023, 02:00:00 AM
1. What is the purpose of BFD (Bidirectional Forwarding Detection) protocol in network routing?
 A. To detect and recover from link failures faster than the standard routing protocol convergence timer.
 B. To provide secure access control to network devices.
 C.To monitor network traffic and identify potential security threats.
  D. To improve network performance by load balancing traffic across multiple paths.

A. The purpose of the BFD (Bidirectional Forwarding Detection) protocol in network routing is to detect and recover from link failures faster than the standard routing protocol convergence timer. BFD provides a fast and efficient mechanism to detect any failure in the network, such as link failures or node failures, and to quickly notify the routing protocols about the changes in the network topology. This helps to minimize the downtime and improve the overall network availability and reliability.

certforumz

#3
February 24, 2023, 02:06:57 AM
What are VLANs
VLANs (Virtual Local Area Networks) are a type of network technology that enables network administrators to create logical groups of devices within a physical network. VLANs allow multiple networks to exist on a single physical network, improving network efficiency and security.

By implementing VLANs, administrators can group devices based on functional requirements rather than physical location, allowing for more flexible network design and easier management. For example, all devices belonging to the finance department can be grouped into one VLAN, while devices belonging to the engineering department can be grouped into another VLAN.

Each VLAN is assigned a unique identifier called a VLAN ID (VID) or VLAN tag, which allows network devices to distinguish between different VLANs. Network traffic between devices within the same VLAN stays within that VLAN, while network traffic between devices in different VLANs must go through a router.

VLANs are commonly used in enterprise networks to improve security, reduce broadcast traffic, and increase network performance by segmenting network traffic into smaller, more manageable groups.


Q1: What is the purpose of VLANs in a network?

A. To improve network performance
B. To improve network security
C. To reduce broadcast traffic
D. All of the above

Answer: D. All of the above

Explanation: VLANs are a type of network technology that can be used to improve network performance, security, and reduce broadcast traffic. By creating logical groups of devices within a physical network, VLANs can help reduce the amount of unnecessary broadcast traffic on a network, improve network performance, and also enhance network security by restricting access to specific network segments.

Q2: What is a VLAN tag?

A. A unique identifier for a VLAN
B. An IP address assigned to a device in a VLAN
C. A device used to connect VLANs
D. A protocol used to transmit VLAN traffic

Answer: A. A unique identifier for a VLAN

Explanation: A VLAN tag, also known as a VLAN ID (VID), is a unique identifier assigned to a VLAN. The VLAN tag allows network devices to distinguish between different VLANs and route traffic accordingly. When a device sends traffic on a VLAN, it attaches a VLAN tag to the traffic that identifies which VLAN the traffic belongs to. When a device receives traffic on a VLAN, it reads the VLAN tag to determine which VLAN the traffic belongs to and routes it accordingly.

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