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Cisco Certified Support Technician (CCST) Networking practice questions

200 free questions with answers and explanations.

Practice test
  1. 151.A network engineer is configuring a network device to prioritize voice and video traffic over regular data traffic to ensure smooth communication during peak hours. Which network concept are they implementing?Networking Fundamentals
  2. 152.A network technician is setting up a new small office network. They need to connect several devices to the network, including computers, printers, and a server, all within a single local area network segment. Which of the following network components is primarily used for this purpose?Networking Fundamentals
  3. 153.A network architect is designing an IPv6 addressing scheme for a global organization. They need to ensure that each device has a unique, globally routable address that can be accessed directly from the internet. Which type of IPv6 address should be primarily used for this purpose?Networking Fundamentals
  4. 154.A company is setting up a new office in a remote area where traditional wired broadband services are unavailable or prohibitively expensive. They need a WAN solution that can provide internet access for email, web browsing, and occasional video conferencing, despite potential higher latency. Which WAN technology is best suited for this scenario?Network Access
  5. 155.A network technician is installing a new Ethernet cable run in an office environment. The cable needs to support Gigabit Ethernet (1000BASE-T) over a distance of approximately 70 meters. Which of the following cable categories is the minimum requirement to reliably achieve this performance?Network Access
  6. 156.A network professional is troubleshooting a slow network connection for a user. The user's computer is connected to a 100 Mbps switch port, but the 'show interface' command on the switch reveals 'Half Duplex' for that port, while the computer's network adapter is configured for 'Auto-negotiate'. This mismatch is causing significant performance degradation. What is the MOST common symptom of a duplex mismatch?Network Access
  7. 157.A network administrator is setting up a new wireless network in a large open-plan office. To ensure optimal coverage and minimize interference, the administrator decides to use the 5 GHz Wi-Fi band. Which of the following is a primary characteristic of the 5 GHz band compared to the 2.4 GHz band?Network Access
  8. 158.A small business has a single wireless access point (AP) that supports both 2.4 GHz and 5 GHz frequencies. Users report slower speeds and more interference when connecting to the 2.4 GHz band compared to the 5 GHz band. Which of the following is a primary reason for this difference in performance?Network Access
  9. 159.A company requires a reliable and secure WAN connection between its main data center and a new branch office. The connection must support various types of traffic (voice, video, data) with different Quality of Service (QoS) requirements and should utilize a service provider's existing infrastructure. Which WAN technology is best suited for these needs?Network Access
  10. 160.A network administrator is troubleshooting an issue where a newly deployed Cisco IP Phone is not receiving an IP address from the DHCP server on a switch port configured for both data and voice VLANs. The phone is connected to the switch, and a computer is connected to the phone's built-in switch port. The computer receives an IP address successfully from the data VLAN, but the phone does not get an IP address for its voice VLAN. Which of the following is the MOST likely cause?Network Access
  11. 161.A network professional is troubleshooting a slow network connection for a user. The user's computer is connected to a switch port. Examination of the switch interface status shows 'Half-Duplex' for the user's port, while the computer's network interface card (NIC) is configured for 'Auto-negotiate' and is expecting 'Full-Duplex'. This mismatch is causing significant performance degradation. What is the most common term for this specific issue?Network Access
  12. 162.A network administrator is implementing a new wireless network in a multi-story building. The administrator wants to ensure that clients can seamlessly roam between access points (APs) without experiencing significant service interruption. Which of the following 802.11 standards or concepts is most relevant for achieving fast and seamless roaming?Network Access
  13. 163.A network engineer is designing a new campus network and needs to select the appropriate Ethernet cable type for connecting switches within a data center rack over short distances (less than 10 meters) at 10 Gbps. Cost-effectiveness and ease of termination are also important considerations. Which cable type is BEST suited for this scenario?Network Access
  14. 164.A network technician is configuring a new switch for a small business. The business needs to connect several IP phones and desktop computers to the same switch ports. To ensure voice quality, the IP phones should be placed in a separate VLAN (VLAN 10 for voice) and assigned a higher Quality of Service (QoS) priority, while the desktop computers should be in the default data VLAN (VLAN 1). Which feature on the switch port simplifies this configuration and ensures proper VLAN assignment for both device types?Network Access
  15. 165.A network technician is configuring a new Cisco switch. To ensure that multiple VLANs can traverse a single physical link between this switch and another switch, the technician must configure the port as a trunk port. Which encapsulation protocol is typically used on Cisco switches for VLAN trunking?Network Access
  16. 166.A network engineer is configuring a point-to-point WAN connection between two branch offices using a serial interface. The link operates at 2.048 Mbps. The engineer needs to calculate the data rate in kilobits per second (kbps) for this connection. What is the correct data rate?Network Access
  17. 167.A network engineer is implementing a new wireless network that needs to cover a large warehouse with many metal racks and machinery. Users report frequent signal drops and dead zones. Which of the following characteristics of the 2.4 GHz and 5 GHz Wi-Fi bands is MOST relevant to addressing these issues in this environment?Network Access
  18. 168.A network technician is configuring an access point (AP) in a new wireless network. The AP needs to support multiple wireless networks, each associated with a different VLAN, to segment traffic for guests, employees, and printers. Which configuration concept must be applied to the AP to achieve this segmentation?Network Access
  19. 169.A network technician is configuring an access port on a Cisco switch for a new user's computer. The computer should only be able to access resources within a specific VLAN (VLAN 10) and should not be able to forward frames from other VLANs. Which command set correctly configures this port?Network Access
  20. 170.A network technician is troubleshooting a network issue where a user's computer can ping other devices on the local subnet but cannot reach resources on a remote network. The switch port connecting the user's computer is configured as an access port in VLAN 10. The router interface connected to the switch is configured with a subinterface for VLAN 10, using the IP address 192.168.10.1/24. The user's computer has an IP address of 192.168.10.50/24. What is the most likely missing configuration element on the user's computer?Network Access
  21. 171.A company is expanding its network to a new branch office located across town. The new office requires a reliable, high-speed connection back to the main office for data access and VoIP services. The ISP offers several options, but the company wants a dedicated, symmetric connection with guaranteed bandwidth. Which WAN technology would best meet these requirements?Network Access
  22. 172.A network technician is troubleshooting a connectivity issue on a user's workstation. The workstation is connected via an Ethernet cable to a wall jack, which connects to a network switch. The link light on both the workstation's NIC and the switch port is off. Which of the following is the MOST likely cause of this issue?Network Access
  23. 173.A network technician is troubleshooting a slow wireless connection in a dense office environment. Many users report intermittent disconnections and low throughput, even when close to an access point (AP). A site survey reveals a high number of APs operating on overlapping channels within the 2.4 GHz band. Which term best describes this issue?Network Access
  24. 174.A network administrator is troubleshooting an issue where a user's computer is experiencing intermittent connectivity and very slow network speeds. The computer is connected to a switch port. After checking the cable and verifying the port configuration, the administrator suspects a duplex mismatch. Which command on a Cisco switch would best confirm if a duplex mismatch exists on the connected port?Network Access
  25. 175.A network professional is troubleshooting a slow wireless connection for a user. The user is complaining about frequent disconnections and very low throughput, even when close to the access point. After checking the configuration, it is confirmed that the access point is operating on the 2.4 GHz band and is configured to use channel 6. A wireless survey reveals several other access points in the vicinity also using channel 6. What is the most likely cause of the user's issue?Network Access
  26. 176.A network technician is configuring a new Cisco switch and needs to ensure that multiple VLANs can traverse a single physical link between this switch and another switch. Which type of port configuration is required for the interface connecting these two switches?Network Access
  27. 177.A network technician is configuring a new Cisco Catalyst switch and needs to ensure that only a single MAC address can be learned on a specific access port. If a different MAC address attempts to connect, the port should shut down immediately. Which feature should the technician configure?Network Access
  28. 178.A company is setting up a new branch office in a remote location where traditional fiber optic or cable broadband services are unavailable. They require a WAN connection that can provide reliable connectivity, albeit with potentially higher latency, and can be quickly deployed. Which WAN technology would best suit these requirements?Network Access
  29. 179.A small branch office needs a reliable and secure WAN connection back to the main data center. The branch office requires dedicated bandwidth and minimal latency for critical applications. The budget allows for a premium solution. Which WAN technology would best meet these requirements?Network Access
  30. 180.A technician is setting up a new wireless network in a small office. The office has several devices that support Wi-Fi 6 (802.11ax) and require high throughput. The technician needs to choose a frequency band that offers higher bandwidth and less interference from older devices like microwaves or cordless phones. Which frequency band is most suitable for this scenario?Network Access
  31. 181.A network administrator is configuring a new Cisco switch for a small business. The business requires that all network devices, including IP phones and computers, receive Power over Ethernet (PoE) from the switch. The administrator needs to ensure that the switch port can automatically detect and provide the necessary power level for connected devices up to 30W. Which IEEE standard should the administrator look for in the switch's specifications?Network Access
  32. 182.A company with a main office and several remote branches uses a Wide Area Network (WAN) to connect these locations. The IT team is investigating ways to reduce the cost of dedicated leased lines while maintaining sufficient bandwidth and reliability for critical applications like ERP and file sharing. Which WAN technology provides a cost-effective alternative by using shared public infrastructure but with mechanisms to ensure quality of service (QoS) and privacy?Network Access
  33. 183.A network administrator needs to ensure that only authorized devices can connect to specific switch ports in a highly secure environment. The solution should prevent rogue devices from gaining network access by learning MAC addresses and optionally applying an action if a violation occurs. Which feature should the administrator configure?Network Access
  34. 184.A network administrator is configuring a new switch in a small office. The administrator needs to ensure that devices connected to ports 1-8 are logically separated from devices connected to ports 9-16, even though they are on the same physical switch. Which network access technology should the administrator implement?Network Access
  35. 185.A network engineer is designing a new campus network and needs to select an Ethernet cable type that supports 10 Gigabit Ethernet (10GbE) over distances up to 100 meters. The environment is susceptible to electromagnetic interference (EMI). Which Ethernet cable category should the engineer choose to meet these requirements?Network Access
  36. 186.A network administrator is designing a new wireless network for a large warehouse. Due to the presence of numerous metal racks, machinery, and concrete walls, the administrator is concerned about signal reflection, absorption, and overall coverage. Which property of wireless signals is primarily affected by these environmental obstacles, leading to reduced signal strength and dead zones?Network Access
  37. 187.A network administrator is troubleshooting a connectivity issue for a workstation connected to a Cisco switch. The workstation can ping other devices on the same VLAN, but it cannot reach devices on a different VLAN. The switch is configured for inter-VLAN routing, and the router is confirmed to be operational. Which of the following is the most likely cause of the problem?Network Access
  38. 188.A network administrator needs to aggregate four Gigabit Ethernet links between two Cisco switches to increase bandwidth and provide redundancy. The administrator plans to use Link Aggregation Control Protocol (LACP) to dynamically bundle these links. Which of the following is a critical requirement for a successful LACP EtherChannel configuration?Network Access
  39. 189.A network administrator is configuring a new Cisco switch. The administrator wants to ensure that specific MAC addresses are allowed on a port, and any other MAC addresses attempting to connect will be immediately shut down, requiring manual intervention to re-enable the port. Which port security violation mode should be configured?Network Access
  40. 190.A network engineer is configuring an EtherChannel (Link Aggregation Control Protocol - LACP) between two switches. The engineer has configured the port-channel interface, but the physical interfaces are not bundling. Upon review, the engineer finds that one switch port is configured for 'speed 100' and the other for 'speed auto'. Which of the following is the MOST likely reason for the EtherChannel not forming?Network Access
  41. 191.A network administrator is troubleshooting a complaint from a user whose new laptop, equipped with Wi-Fi 6 (802.11ax), experiences slow speeds and frequent disconnections when connected to the office's existing wireless network. The office uses older 802.11n access points. All other 802.11n devices work fine. What is the most likely reason for the performance issues with the Wi-Fi 6 laptop?Network Access
  42. 192.A network technician is configuring a new wireless access point (AP) in a dense office environment. To minimize interference and optimize performance, the technician needs to select appropriate 2.4 GHz Wi-Fi channels. Which set of channels should be chosen to ensure they are non-overlapping?Network Access
  43. 193.A network administrator is configuring a new Cisco Catalyst switch and needs to enable a feature that prevents unauthorized devices from connecting to specific access ports by limiting the number of MAC addresses allowed on a port and defining the action to take when a violation occurs. Which of the following features should the administrator configure?Network Access
  44. 194.A network administrator is configuring a Cisco router to forward all traffic destined for the internet through a specific next-hop IP address. Which type of route should the administrator configure?IP Connectivity
  45. 195.A network administrator is reviewing the routing table of a Cisco router and observes the following entry: 'O 10.0.0.0/8 [110/2] via 192.168.1.1, 00:00:30, GigabitEthernet0/0'. What does the value '110' represent in this routing table entry?IP Connectivity
  46. 196.A network technician is troubleshooting a client's workstation that is experiencing intermittent connectivity issues. The workstation is connected to a network switch via a 10-meter Ethernet cable. Upon inspection, the technician observes that the cable is coiled tightly with several other power cords and is running parallel to a fluorescent light fixture. Which of the following is the MOST likely cause of the intermittent connectivity?Networking Fundamentals
  47. 197.A network technician is configuring Static Network Address Translation (NAT) on a Cisco router. The internal server has an IP address of 192.168.1.10, and it needs to be accessible from the internet using the public IP address 203.0.113.5. Which command correctly configures this Static NAT mapping?IP Connectivity
  48. 198.A network technician is configuring EIGRP on a Cisco router and wants to ensure that a specific interface does not send or receive EIGRP routing updates, but networks connected to it are still advertised by EIGRP. Which EIGRP command should be used on that interface?IP Connectivity
  49. 199.A network engineer is troubleshooting an EIGRP routing issue. They suspect that the EIGRP metric calculation is incorrect, leading to suboptimal path selection. Which components are used by EIGRP to calculate its composite metric by default?IP Connectivity
  50. 200.A network engineer is configuring OSPF on a broadcast multi-access network segment. Two routers, R1 and R2, are connected to this segment. R1 has a router ID of 192.168.1.1, and R2 has a router ID of 192.168.1.2. Both routers have their interface priorities set to the default value. Which router will be elected as the Designated Router (DR)?IP Connectivity