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: C

On a Cisco switch, a port with a blinking green LED typically indicates that the port is up (active) and is currently transmitting or receiving data. This is a normal state indicating active traffic on the port.

-A. Link is up with cable malfunctions: Usually indicated by an amber or blinking amber light.

-B. Link is up and not stable: Not typically indicated by a green blinking light.

-D. Link is up and there is no activity: Would be indicated by a solid green light withoutblinking.

Thus, the correct answer is C. Link is up and active.

References:

-Cisco Switch LED Indicators

-Cisco Ethernet Switch LED Patterns

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