Correct Answer: D

Router

Theshow running-configcommand is used on a Cisco router to display the current operational settings that are actively configured in the router's RAM. This command outputs all the configurations that are currently being executed by the

router, which includes interface configurations, routing protocols, access lists, and other settings. Unlikeshow startup-config, which shows the saved configuration that the router will use on the next reboot,show running-configreflects the live,

current configuration in use. References: The information is supported by multiple sources that detail the use of Cisco commands, particularly theshow running-configcommand as the standard for viewing the active configuration on a Cisco

device123.

show running-config: This command displays the current configuration running on the router. It includes all the operational settings and configurations applied to the router.

show protocols: This command shows the status of configured protocols on the router but not the entire configuration.

show startup-config: This command displays the configuration saved in NVRAM, which is used to initialize the router on startup, but not necessarily the current running configuration. show version: This command provides information about

the router's software version, hardware components, and uptime but does not display the running configuration.

References:

Cisco IOS Commands: Cisco IOS Commands

Correct Answer: D

IPv6 addresses can be compressed by removing leading zeros and replacing consecutive groups of zeros with a double colon (::). Here's how to compress the address 2001:0db8:0000:0016:0000:001b:2000:0056:

Remove leading zeros from each segment:

Replace the longest sequence of consecutive zeros with a double colon (::). In this case, the two consecutive zeros between the 16 and 1b:

Thus, the most compressed valid format of the IPv6 address is 2001:db8:0:16::1b:2000:56.

References:

Cisco Learning Network

IPv6 Addressing (Cisco)

Correct Answer: AD

The private IP address ranges that are set aside specifically for use within private networks and not routable on the internet are as follows: Class A: 10.0.0.0 to 10.255.255.255 Class B: 172.16.0.0 to 172.31.255.255 Class C: 192.168.0.0 to 192.168.255.255 These ranges are defined by the Internet Assigned Numbers Authority (IANA) and are used for local communications within a private network123. Given the options: A.172.16.0.0 to 172.31.255.255falls within the Class B private range. B.

192.16.0.0 to 192.16.255.255is not a recognized private IP range. C.11.0.0.0 to 11.255.255.255is not a recognized private IP range. D.192.168.0.0 to 192.168.255.255 falls within the Class C private range.

Therefore, the correct selections that the company should use for their private networks are AandD.

References:

Reserved IP addresses on Wikipedia

Private IP Addresses in Networking - GeeksforGeeks Understanding Private IP Ranges, Uses, Benefits, and Warnings

Correct Answer: AC

-Statement A: "The trace successfully reached the www.cisco.com server." This is true as indicated by the "Trace complete" message at the end, showing that the trace has reached its destination. -Statement C: "The IPv6 address associated

with the www.cisco.com server is 2600:1408:c400:38d::b33." This is true because the final hop in the trace, which is the destination, has this IPv6 address.

-Statement B: "The trace failed after the fourth hop." This is incorrect as the trace continues beyond the fourth hop, despite some intermediate timeouts. -Statement D: "The routers at hops 5 and 6 are offline." This is not necessarily true. The

routers might be configured to not respond to traceroute requests.

-Statement E: "The device sending the trace has IPv6 address 2600:1408:c400:38d::b33."

This is incorrect; this address belongs to the destination server, not the sender.

References:

-Understanding Traceroute: Traceroute Guide

Correct Answer: B

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.

References:

Cisco Layer 2 Switching Overview

Switching Mechanisms (Cisco)

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

Correct Answer: B

The tracert command is used to determine the route taken by packets across an IP network. When a user reports that an external web page is not loading, while other resources are accessible, it suggests there might be an issue at a certain

point in the network path to the specific web page. The tracert command helps to diagnose where the breakdown occurs by displaying a list of routers that the packets pass through on their way to the destination. It can identify the network

segment where the packets stop progressing,

which is valuable for pinpointing where the connectivity issue lies. References := Cisco

CCST Networking Certification FAQs ?CISCONET Training Solutions, Command Prompt (CMD): 10 network-related commands you should know, Network Troubleshooting Commands Guide: Windows, Macand; Linux - Comparitech, How to

Use the Traceroute and Ping Commands to Troubleshoot Network, Network Troubleshooting Techniques: Ping, Traceroute, PathPing. -tracert Command: This command is used to determine the path packets take to reach a destination. It lists

all the hops (routers) along the way and can help identify where the delay or failure occurs. -ping -t: This command sends continuous ping requests and is useful for determining if a host is reachable but does not provide path information. ipconfig /all: This command displays all current TCP/IP network configuration values and can be used to verify network settings but not to trace a network path.

-nslookup: This command queries the DNS to obtain domain name or IP address mapping,

useful for DNS issues but not for tracing network paths.

References:

-Microsoft tracert Command: tracert Command Guide

-Troubleshooting Network Issues with tracert: Network Troubleshooting Guide

Correct Answer: B

When prioritizing trouble tickets, the most critical issues affecting business operations or high-impact activities should be addressed first. Here's a breakdown of the tickets:

Ticket 1: Relocation of a printer, while necessary, is not urgent and does not impact critical operations.

Ticket 2: An ongoing webinar losing internet access is critical, especially if the webinar is time-sensitive and involves multiple participants. Ticket 3: Slower response time for a cloud-based application is important but typically not as urgent as

a complete loss of internet access for a live event. Ticket 4: Wireless access down in the cafeteria affects users but does not have the same immediate impact as a live webinar losing connectivity. Thus, the correct answer is B. Ticket 2: An

online webinar is taking place in the conference room. The video conferencing equipment lost internet access.

References:

IT Help Desk Best Practices

Prioritizing IT Support Tickets

Correct Answer: B

Out-of-band management

When a Cisco switch is not accessible from the network, the recommended out-of-band method to access its running configuration is through theconsole port. Out-of-band management involves accessing the network device through a

dedicated management channel that is not part of the data network.The console port provides direct access to the switch's Command Line Interface (CLI) without using the network, which is essential when the switch cannot be accessed

remotely via the network12.

References:

Out-of-band (OOB) network interface configuration guidelines Out of band management configuration

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

If you have any more questions or need further assistance, feel free to ask!

Correct Answer: A

WPA2-Personal, also known as WPA2-PSK (Pre-Shared Key), is the wireless security option that uses a pre-shared key to authenticate clients. This method is designed for home and small office networks and doesn't require an

authentication server. Instead, every user on the network uses the same key or passphrase to connect.

References:

-What is a Wi-Fi Protected Access Pre-Shared Key (WPA-PSK)?

-Exploring WPA-PSK and WiFi Security

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

-WPA2-Personal: This wireless security option uses a pre-shared key (PSK) for authentication. Each client that connects to the network must use this key to gain access. It is designed for home and small office networks where simplicity and

ease of use are important.

-WPA2-Enterprise: Unlike WPA2-Personal, WPA2-Enterprise uses 802.1x authentication with an authentication server (such as RADIUS) and does not rely on a pre-shared key. -802.1x: This is a network access control protocol for LANs,

particularly wireless LANs. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN. -802.1q: This is a networking standard that supports VLAN tagging on Ethernet networks and is not related to wireless

security.

References:

Cisco Documentation on WPA2 Security: Cisco WPA2 Understanding Wireless Security: Wireless Security Guide