CCST-NETWORKING Online Practice Questions and Answers

Correct Answer: D

The CIDR (Classless Inter-Domain Routing) notation for the subnet mask 255.255.252.0 is /22. This notation indicates that the first 22 bits of the IP address are used for network identification, and the remaining bits are used for host

addresses within the network1.

References:

Subnet Cheat Sheet ?24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

=========================

Subnet Mask to CIDR Notation: The given subnet mask is 255.255.252.0. To convert this to CIDR notation:

Convert the subnet mask to binary: 11111111.11111111.11111100.00000000

Count the number of consecutive 1s in the binary form: There are 22 ones.

Therefore, the CIDR notation is /22.

References:

Understanding Subnetting and CIDR: Cisco CIDR Guide

Correct Answer: D

-1000BASE-T Cable: This refers to Gigabit Ethernet over twisted-pair cables (Cat 5e or higher).

-Connector: RJ-45 connectors are used for Ethernet cables, including those used for 1000BASE-T.

-Coax: Used for cable TV and older Ethernet standards like 10BASE2.

-RJ-11: Used for telephone connections.

-OS2 LC: Used for fiber optic connections.

References:

-Ethernet Standards and Cables: Ethernet Cable Guide

Correct Answer: D

The primary purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch is to facilitate remote management of the switch. By configuring an IP address on the management VLAN, network administrators can

access the switch's Command Line Interface (CLI) remotely using protocols such as Telnet or Secure Shell (SSH). This allows for convenient configuration changes, monitoring, and troubleshooting without needing physical access to the

switch1.

References:

-Understanding the Management VLAN

-Cisco - VLAN Configuration Guide

-Remote Management of Switches

Assigning an IP address to the management VLAN interface (often the VLAN 1 interface by default) on a Layer 2 switch allows network administrators to remotely manage the switch using protocols such as Telnet or SSH. This IP address

does not affect the switch's ability to route traffic between VLANs but provides a means to access and configure the switch through its Command Line Interface (CLI).

-A: The switch does not act as a default gateway; this is typically a function of a Layer 3 device like a router.

-B: The switch does not resolve URLs; this is typically a function of DNS servers.

-C: The switch can relay DHCP requests but does not typically provide DHCP services

itself; this is usually done by a dedicated DHCP server or router.

Thus, the correct answer is D. To enable access to the CLI on the switch through Telnet or SSH.

References :

-Cisco VLAN Management Overview

-Cisco Catalyst Switch Management

Correct Answer: B

The command that will display the output provided, which includes capability codes, local interface details, device IDs, hold times, and platform port ID capabilities, is the show cdp neighbor command. This command is used in Cisco devices

to display current information about neighboring devices detected by Cisco Discovery Protocol (CDP), which includes details such as the interface through which the neighbor is connected, the type of device, and the port ID of the device1.

References:

-Cisco - show cdp neighbors

The provided output is from the Cisco Discovery Protocol (CDP) neighbor table. The show cdp neighbor command displays information about directly connected Cisco devices, including Device ID, Local Interface, Holdtime, Capability,

Platform, and Port ID.

-A. show mac-address-table: Displays the MAC address table on the switch.

-C. show inventory: Displays information about the hardware inventory of the device.

-D. show ip interface: Displays IP interface status and configuration.

Thus, the correct answer is B. show cdp neighbor.

References:

-Cisco CDP Neighbor Command

-Understanding CDP

Correct Answer: BD

-Statement B: "The same default gateway IPv4 address is configured on each host on the local network." This is true because all hosts on the same local network (subnet) use the same default gateway IP address to send packets destined for

other networks.

-Statement D: "The default gateway is the IPv4 address of the router interface connected to the same local network as the host." This is true because the default gateway is the IP address of the router's interface that is directly connected to

the local network.

-Statement A: "The IPv4 address of the default gateway must be the first host address in the subnet." This is not necessarily true. The default gateway can be any address within the subnet range. -Statement C: "The default gateway is the

Loopback0 interface IPv4 address of the router connected to the same local network as the host." This is not true; the default gateway is the IP address of the router's physical or logical interface connected to the local network.

-Statement E: "Hosts learn the default gateway IPv4 address through router advertisement messages." This is generally true for IPv6 with Router Advertisement (RA) messages, but not typically how IPv4 hosts learn the default gateway

address.

Correct Answer: C

In the provided image of the Cisco PoE switch, the ports identified with number 6 are the standard RJ-45 Ethernet ports typically found on switches that provide both data connectivity and Power over Ethernet (PoE). PoE ports are designed to

supply power to devices such as IP phones, wireless access points, and other PoE-enabled devices directly through the Ethernet cable.

Ports:

2: Console port (for management and configuration)

3 and 4: Specific function ports (often for management)

6: RJ-45 Ethernet ports (capable of providing PoE)

7: SFP ports (for fiber connections, typically do not provide PoE) Thus, the correct answer is C. Ports identified with number 6.

References:

cisco Catalyst 2960-L Series Switches Data Sheet Cisco PoE Overview

Correct Answer: AC

Statement A: "A detailed description of the fault." This is essential for support staff to understand the nature of the problem and begin troubleshooting effectively. Statement C: "A description of the conditions when the fault occurs." This helps

in reproducing the issue and identifying patterns that might indicate the cause of the fault.

Statement B: "Details about the computers connected to the network." While useful, this is not as immediately critical as understanding the fault itself and the conditions under which it occurs.

Statement D: "The actions taken to resolve the fault." This is important but typically follows the initial report.

Statement E: "The description of the top-down fault-finding procedure." This is more of a troubleshooting methodology than information typically included in an initial support ticket.

References:

Best Practices for Submitting Support Tickets: Support Ticket Guidelines

Correct Answer:

The correct matching of the MFA factors to their examples is as follows:

Entering a one-time security code sent to your device after logging in: Possession Holding your phone to your face to be recognized: Inherence Specifying your user name and password to log on to a service: Knowledge Here's why each

factor matches the example:

Possession: This factor is something the user has, like a mobile device. A one- time security code sent to this device falls under this category. Inherence: This factor is something the user is, such as a biometric characteristic. Facial

recognition using a phone is an example of this factor. Knowledge: This factor is something the user knows, like a password or PIN. Multi-Factor Authentication (MFA) enhances security by requiring two or more of these factors to verify a

user's identity before granting access.

Entering a one-time security code sent to your device after logging in. Holding your phone to your face to be recognized. Specifying your username and password to log on to a service.

Possession Factor: This involves something the user has in their possession. Receiving a one-time security code on a device (e.g., phone) is an example of this. Inference Factor (Inherence/Biometric): This involves something inherent to the

user, such as biometric verification (e.g., facial recognition or fingerprint scanning). Knowledge Factor: This involves something the user knows, such as login credentials (username and password).

References:

Multi-Factor Authentication (MFA) Explained: MFA Guide Understanding Authentication Factors: Authentication Factors

Correct Answer:

The two interfaces are administratively shut down:

The two interfaces have default IP addresses assigned:

The two interfaces 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.

References:

Cisco IOS Interface Configuration: Cisco Interface Configuration Understanding Cisco Switch Interfaces: Cisco Switch Interfaces

Correct Answer:

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=Aoption, which stands for Address records that hold IPv4

addresses1. However, thenslookupcommand by default should return the IPv4 address if available. To list the IPv4 addresses associated with the host namewww.companypro.net, you should use thenslookupcommand.

Command: nslookup

Target:www.companypro.net

So, the completed command is:

nslookupwww.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