Practice Free CCST Networking Exam Online Questions
A user initiates a trouble ticket stating that an external web page is not loading. You determine that other resources both internal and external are still reachable.
Which command can you use to help locate where the issue is in the network path to the external web page?
- A . ping -t
- B . tracert
- C . ipconfig/all
- D . nslookup
B
Explanation:
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.
Reference: =
Cisco CCST Networking Certification FAQs C CISCONET Training Solutions, Command Prompt (CMD): 10 network-related commands you should know, Network Troubleshooting Commands Guide: Windows, Mac & 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.
Reference:
• Microsoft tracert Command: tracert Command Guide
• Troubleshooting Network Issues with tracert: Network Troubleshooting Guide
You need to connect a computer’s network adapter to a switch using a 1000BASE-T cable.
Which connector should you use?
- A . Coax
- B . RJ-11
- C . OS2 LC
- D . RJ-45
D
Explanation:
• 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.
Reference: • Ethernet Standards and Cables: Ethernet Cable Guide
Which two pieces of information should you include when you initially create a support ticket? (Choose 2.)
- A . A detailed description of the fault
- B . Details about the computers connected to the network
- C . A description of the conditions when the fault occurs
- D . The actions taken to resolve the fault
- E . The description of the top-down fault-finding procedure
AC
Explanation:
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.
Reference: Best Practices for Submitting Support Tickets: Support Ticket Guidelines
A local company requires two networks in two new buildings. The addresses used in these networks must be in the private network range.
Which two address ranges should the company use? Note: You will receive partial credit for each correct selection. (Choose 2.)
- A . 172.16.0.0 to 172.31.255.255
- B . 192.16.0.0 to 192.16.255.255
- C . 11.0.0.0 to 11.255.255.255
- D . 192.168.0.0 to 192.168.255.255
AD
Explanation:
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:
Examine the following output:
Which two conclusions can you make from the output of the tracert command? Note: You will receive partial credit for each correct answer. (Choose 2.)
- A . The trace successfully reached the www.cisco.com server.
- B . The trace failed after the fourth hop.
- C . The IPv6 address associated with the www.cisco.com server is 2600:1408: c400: 38d: : b33.
- D . The routers at hops 5 and 6 are offline.
- E . The device sending the trace has IPv6 address 2600:1408:c400:38d :: b33.
AC
Explanation:
• 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.
Reference: • Understanding Traceroute: Traceroute Guide
HOTSPOT
You purchase a new Cisco switch, turn it on, and connect to its console port. You then run the following command:
For each statement about the output, select True or False. Note: You will receive partial credit for each correct selection.
Explanation:
The two interfaces are administratively shut down:
False: The output does not show any "shutdown" command under the interfaces, which would indicate that they are administratively shut down. Therefore, they are likely in their default state, which is administratively up.
The two interfaces have default IP addresses assigned:
False: The output does not show any IP address configuration. In the default state, interfaces do not have IP addresses assigned unless explicitly configured.
The two interfaces can communicate over Layer 2:
True: By default, interfaces on a switch are Layer 2 interfaces capable of forwarding Ethernet frames. As there is no configuration provided that changes this, it can be assumed they 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.
Reference: Cisco IOS Interface Configuration: Cisco Interface Configuration
Understanding Cisco Switch Interfaces: Cisco Switch Interfaces
Which command will display all the current operational settings configured on a Cisco router?
- A . show protocols
- B . show startup-config
- C . show version
- D . show running-config
D
Explanation:
The show running-config command 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. Unlike show startup-config, which shows the saved configuration that the router will use on the next reboot, show running-config reflects the live, current configuration in use.
Reference: = The information is supported by multiple sources that detail the use of Cisco commands, particularly the show running-config command 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.
Reference: Cisco IOS Commands: Cisco IOS Commands
What is the most compressed valid format of the IPv6 address 2001 :0db8:0000:0016:0000:001b: 2000:0056?
- A . 2001:db8: : 16: : 1b:2:56
- B . 2001:db8: : 16: : 1b: 2000: 56
- C . 2001:db8: 16: :1b:2:56
- D . 2001:db8: 0:16: :1b: 2000:56
D
Explanation:
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:
2001:db8:0000:0016:0000:001b:2000:0056 becomes 2001:db8:0:16:0:1b:2000:56
Replace the longest sequence of consecutive zeros with a double colon (::). In this case, the two consecutive zeros between the 16 and 1b:
2001:db8:0:16::1b:2000:56
Thus, the most compressed valid format of the IPv6 address is 2001:db8:0:16::1b:2000:56.
Reference: =
Cisco Learning Network
IPv6 Addressing (Cisco)
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?
- A . Additional VLAN
- B . Default route
- C . Default gateway
- D . Static route
C
Explanation:
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.
Reference: =
• 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.
Reference:
• Cisco VLAN Configuration Guide: Cisco VLAN Configuration
• Understanding and Configuring VLANs: VLANs Guide
What is the purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch?
- A . To enable the switch to act as a default gateway for the attached devices
- B . To enable the switch to resolve URLs for the attached the devices
- C . To enable the switch to provide DHCP services to other switches in the network
- D . To enable access to the CLI on the switch through Telnet or SSH
D
Explanation:
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.
Reference: =
• 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.
Reference: =
• Cisco VLAN Management Overview
• Cisco Catalyst Switch Management