CompTIA Network+ Certification! Hardest Trivia Quiz

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  • 1/100 Questions

    Clients begin having network problems and ask the technician to expand the pool of available IP addresses. On which of the following servers should this be done?  

    • DNS
    • TFTP
    • DHCP
    • PKI
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About This Quiz

Challenge your knowledge with the 'CompTIA Network+ Certification! Hardest Trivia Quiz. ' This quiz tests your understanding of network protocols, security, and troubleshooting, focusing on essential skills for network engineers. Ideal for those preparing for the CompTIA Network+ certification.

CompTIA Network+ Certification! Hardest Trivia Quiz - Quiz

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  • 2. 

    Which of the following commands will remove cached DNS entries?

    • route del -net 127.0.0.1

    • Route add -net 0.0.0.0

    • Ipconfig /flushdns

    • Nslookup 127.0.0.1

    Correct Answer
    A. Ipconfig /flushdns
    Explanation
    The command "ipconfig /flushdns" is used to remove cached DNS entries. This command clears the DNS resolver cache on a Windows computer, forcing it to query DNS servers for new DNS information when needed.

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  • 3. 

    Which of the following encryption methods is the MOST secure?

    • WEP

    • WPA

    • WPA2

    • WEP-TKIP

    Correct Answer
    A. WPA2
    Explanation
    WPA2 is the most secure encryption method among the options given. WEP is the least secure as it has several vulnerabilities that make it easy to crack. WPA provides better security than WEP but is still susceptible to certain attacks. WPA2, on the other hand, is the most advanced encryption protocol and offers stronger security measures, making it harder for hackers to gain unauthorized access to a wireless network. WEP-TKIP is a combination of WEP and TKIP encryption, which is also less secure compared to WPA2.

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  • 4. 

    Which of the following features of a switch allows WAPs to be installed in locations where no power sources are available?

    • Aggregation

    • Port forwarding

    • PoE

    • VLAN

    Correct Answer
    A. PoE
    Explanation
    PoE stands for Power over Ethernet, which is a feature of a switch that allows devices like wireless access points (WAPs) to be powered through the Ethernet cable, eliminating the need for a separate power source. This is particularly useful in locations where power sources are not readily available, as it simplifies the installation process and reduces the need for additional wiring. By using PoE, WAPs can be easily deployed in remote or hard-to-reach areas without the need for complex power arrangements.

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  • 5. 

    A user is getting very weak signals while trying to connect to wireless. Which of the following should the user do to help with signal strength?  

    • Call the wireless provider and ask for a T3 circuit.

    • Move the wireless router to a better location where line of sight is obtained.

    • Reinstall the operating system to the PC to ensure the newest patches are installed.

    • Install a hub to ensure there is a clear path for the cables to run.

    Correct Answer
    A. Move the wireless router to a better location where line of sight is obtained.
    Explanation
    Moving the wireless router to a better location where line of sight is obtained will help improve the signal strength. This means finding a position for the router where there are no obstacles blocking the wireless signals, such as walls or furniture. By doing so, the user can ensure that the wireless signals can travel freely and reach the device with stronger and more reliable signals.

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  • 6. 

    Which of the following has similar functionalities as a wireless repeater?

    • Basic switch

    • Wireless access point

    • Basic firewall

    • DHCP server

    Correct Answer
    A. Wireless access point
    Explanation
    A wireless access point has similar functionalities as a wireless repeater. Both devices are used to extend the range and coverage of a wireless network. A wireless access point connects to a wired network and broadcasts a wireless signal, allowing devices to connect to the network wirelessly. Similarly, a wireless repeater also extends the range of a wireless network by receiving and amplifying the existing signal and then rebroadcasting it. Both devices help to improve the coverage and reach of a wireless network.

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  • 7. 

    A network technician is installing multiple 802.11g WAPs with the same SSID. Which of the following channel combinations would allow all three WAPs to operate without interfering with each other?  

    • 1,6,11

    • 2,6,10

    • 3,5,9

    • 7,9,11

    Correct Answer
    A. 1,6,11
    Explanation
    The 802.11g standard uses 14 different channels, but only channels 1, 6, and 11 are non-overlapping. This means that these channels can be used simultaneously without causing interference between the WAPs. Therefore, using channels 1, 6, and 11 for the three WAPs will allow them to operate without interfering with each other.

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  • 8. 

    After upgrading the network switch to a gigabit, one users connection no longer works. Which of the following would an administrator use to verify the network cable will work at a gigabit speed?    

    • Toner probe

    • Certifier

    • Snips

    • Cable stripper

    Correct Answer
    A. Certifier
    Explanation
    A certifier is a tool used to verify the performance and quality of network cables. It can test the cable for various parameters such as signal strength, attenuation, and crosstalk. In this scenario, the administrator can use a certifier to test the network cable and ensure that it is capable of supporting gigabit speeds. By running the cable through the certifier, the administrator can identify any potential issues or faults in the cable that may be causing the user's connection to fail.

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  • 9. 

    Which of the following are commonly used FTP ports?

    • 20,21

    • 22,23

    • 24,25

    Correct Answer
    A. 20,21
    Explanation
    Ports 20 and 21 are commonly used for FTP (File Transfer Protocol). Port 20 is used for data transfer, while port 21 is used for control and command functions. FTP is a standard network protocol used to transfer files from one host to another over a TCP-based network, such as the internet. By using these well-known ports, FTP clients and servers can establish a connection and exchange data effectively.

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  • 10. 

    Which of the following identifies the WLAN a user is connected to?  

    • SSID

    • Frequency

    • WEP

    • Channel

    Correct Answer
    A. SSID
    Explanation
    The SSID (Service Set Identifier) is a unique name that identifies a wireless network. It is used to differentiate between different WLANs that may be available in the vicinity. When a user connects to a wireless network, their device displays the SSID to indicate the network they are connected to. Therefore, the SSID is the correct answer for identifying the WLAN a user is connected to.

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  • 11. 

    Which of the following would be used to identify the hot zone in a server room?

    • OTDR

    • Temperature monitor

    • Cable stripper

    • Voltage event monitor

    Correct Answer
    A. Temperature monitor
    Explanation
    A temperature monitor would be used to identify the hot zone in a server room. This device is designed to measure and monitor the temperature in a specific area, such as a server room. By placing temperature monitors strategically throughout the room, it can help identify areas that are experiencing higher temperatures than others, indicating potential hot zones. This information is crucial for maintaining the optimal operating conditions for servers and other equipment in the server room to prevent overheating and potential damage.

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  • 12. 

    Which of the following encryption types is an administrator MOST likely to enable on a public WAP in order to provide better security?  

    • WPA

    • WPA2

    • WEP

    • IPSec

    Correct Answer
    A. WPA2
    Explanation
    An administrator is most likely to enable WPA2 encryption on a public WAP in order to provide better security. WPA2 is the most secure encryption type among the options given, as it uses the Advanced Encryption Standard (AES) algorithm to encrypt data. WPA2 also provides stronger authentication methods, making it harder for unauthorized users to gain access to the network. WEP encryption is outdated and easily cracked, while IPSec is a VPN protocol and not typically used for securing wireless networks.

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  • 13. 

    A technician installed a wireless network, and it worked as expected during testing. However during the conference, the network was intermittent at best. Which of the following BEST describes what is occurring?  

    • Interference from the satellite dish is causing a broadcast storm.

    • PoE requirements are much greater with multiple users.

    • The AP has reached capacity.

    • The network switches have overheated due to capacity.

    Correct Answer
    A. The AP has reached capacity.
    Explanation
    The given answer suggests that the access point (AP) has reached its maximum capacity, leading to the intermittent network during the conference. This means that the AP is unable to handle the number of devices or the amount of network traffic during the conference, causing disruptions in the network connection.

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  • 14. 

    Which of the following should occur when closing a network project?  

    • Update documentation

    • Validate the design

    • Configure the new network devices

    • Develop a project plan

    Correct Answer
    A. Update documentation
    Explanation
    When closing a network project, updating the documentation is necessary. This includes documenting any changes or updates made during the project, as well as recording any lessons learned or best practices discovered. Updating the documentation ensures that the network project is properly documented and can be easily referenced in the future if needed. It also helps to maintain accurate records and provide valuable information for future network projects or troubleshooting purposes.

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  • 15. 

    Access point placement is determined during which phase of the wireless network project?  

    • Site survey

    • Hand-off

    • Installation

    • Testing

    Correct Answer
    A. Site survey
    Explanation
    During the site survey phase of a wireless network project, the placement of access points is determined. This involves conducting a thorough analysis of the site to identify the optimal locations for installing access points. Factors such as the layout of the area, signal strength requirements, and potential sources of interference are taken into consideration to ensure effective coverage and connectivity throughout the network.

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  • 16. 

    Which of the following is the default port for SMTP? A. 21 B. 23 C. 24 D. 25

    • 21

    • 23

    • 24

    • 25

    Correct Answer
    A. 25
    Explanation
    The correct answer is D. 25. SMTP (Simple Mail Transfer Protocol) is a protocol used for sending email messages between servers. The default port for SMTP is 25.

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  • 17. 

    Which of the following tools would be BEST used to trace a wire through an area where multiple wires of the same color are twisted together?

    • Cable tester

    • Toner probe

    • Cable crimper

    • Punch down tool

    Correct Answer
    A. Toner probe
    Explanation
    A toner probe is the best tool to trace a wire through an area where multiple wires of the same color are twisted together. A toner probe is designed to send a tone through a wire, which can then be detected using a probe. By connecting the toner to the wire in question, the user can then use the probe to follow the tone and trace the wire through the twisted bundle. This tool is specifically designed for wire tracing and is therefore the most suitable option for this scenario.

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  • 18. 

    Which of the following should an administrator use to identify where all the MDFs are located within the network?  

    • Wiring schematics

    • Security and network policies

    • Physical network diagram

    • Baseline configurations

    Correct Answer
    A. Physical network diagram
    Explanation
    An administrator should use a physical network diagram to identify where all the MDFs (Main Distribution Frames) are located within the network. A physical network diagram provides a visual representation of the network infrastructure, including the physical locations of devices, connections, and network components. By referring to the physical network diagram, the administrator can easily locate and identify the MDFs within the network.

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  • 19. 

    Which of the following mitigation techniques would be used in order to defend against social engineering?

    • Updating antivirus definitions

    • Implementing patch management solutions

    • Enabling audit logs on all workstations

    • Revising security and network policies

    Correct Answer
    A. Revising security and network policies
    Explanation
    Revising security and network policies is the correct answer because social engineering attacks involve manipulating individuals into revealing sensitive information or performing actions that compromise security. By revising security and network policies, organizations can establish guidelines and procedures to educate employees about social engineering tactics, raise awareness, and implement measures to prevent and detect such attacks. This includes implementing strong authentication protocols, training employees to recognize and report suspicious activities, and establishing strict access controls to protect sensitive information.

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  • 20. 

    A traceroute command primarily provides information in the context of number and:

    • IP address of packets

    • Location of MAC addresses

    • Location of ports

    • IP address of hops

    Correct Answer
    A. IP address of hops
    Explanation
    A traceroute command is used to track the path that packets take from the source to the destination. It displays the IP addresses of the intermediate hops that the packets pass through. This information helps in identifying the network route and any potential bottlenecks or delays. The command does not provide information about the IP address of the packets themselves, the location of MAC addresses, or the location of ports.

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  • 21. 

    Which of the following is the BEST reason why satellite connectivity for VoIP applications should not be used?  

    • Latency sensitivity

    • EMI

    • Low bandwidth

    • Crosstalk

    Correct Answer
    A. Latency sensitivity
    Explanation
    Satellite connectivity for VoIP applications should not be used because of latency sensitivity. Latency refers to the delay in the transmission of data, and for VoIP applications, even a slight delay can result in poor call quality and communication issues. Satellite connections have inherently high latency due to the long distance the signals have to travel between the satellite and the ground station. This can lead to significant delays in voice transmission, making real-time communication difficult. Therefore, due to the latency sensitivity of VoIP applications, satellite connectivity is not suitable.

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  • 22. 

    A technician wants to separate networks on a switch. Which of the following should be configured to allow this?  

    • VLAN

    • Trunking

    • Spanning tree

    • Traffic filtering

    Correct Answer
    A. VLAN
    Explanation
    To separate networks on a switch, the technician should configure VLAN (Virtual Local Area Network). VLAN allows the switch to create multiple virtual networks, each with its own broadcast domain, by logically dividing the physical switch into different VLANs. This enables the isolation of traffic between different VLANs, improving network security and performance. Trunking, spanning tree, and traffic filtering are not specifically designed for separating networks on a switch.

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  • 23. 

    Which of the following packet addresses represents a single NIC

    • Broadcast address

    • Unicast address

    • Multicast address

    • Broadcast domain

    Correct Answer
    A. Unicast address
    Explanation
    A unicast address represents a single NIC (Network Interface Card). It is a unique address assigned to a device on a network, allowing communication between a single sender and a single receiver. Unicast addresses are used for point-to-point communication and are the most common type of packet address in networking. Broadcast addresses are used to send a packet to all devices on a network, multicast addresses are used to send a packet to a group of devices, and broadcast domains refer to a network segment where all devices can receive each other's broadcast messages.

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  • 24. 

    An administrator would like to display active TCP connections on a computer. Which of the following commands would BEST accomplish this?  

    • route

    • Nslookup

    • ifconfig

    • netstat

    Correct Answer
    A. netstat
    Explanation
    The command "netstat" is used to display active TCP connections on a computer. It provides information about network connections, listening ports, and network statistics. By using the "netstat" command, the administrator can easily view the active TCP connections on the computer.

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  • 25. 

    Which of the following attacks is a social engineering attack?

    • Man-in-the-middl

    • Rootkits

    • Vishing

    • DDoS

    Correct Answer
    A. Vishing
    Explanation
    Vishing is a social engineering attack. It involves the use of voice communication, typically through phone calls, to deceive individuals and gather sensitive information. The attacker impersonates a trusted entity, such as a bank representative, and manipulates the victim into providing personal details, passwords, or financial information. This attack relies on exploiting human trust and persuasion rather than technical vulnerabilities.

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  • 26. 

    A technician is setting up a temporary wired network for a conference being hosted at the company headquarters. The purpose of the network is to share files between guests laptops, with no Internet access. Which of the following devices would BEST accomplish this scenario at a low cost?  

    • Bridge

    • Repeater

    • Modem

    • Switch

    Correct Answer
    A. Switch
    Explanation
    A switch would be the best device to accomplish this scenario at a low cost. A switch is used to connect multiple devices together on a local area network (LAN) and allows for the sharing of files between connected devices. It does not require an internet connection, making it suitable for a temporary wired network without internet access. A bridge, repeater, and modem are not necessary in this scenario as they serve different purposes.

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  • 27. 

    A user browsing the Internet sees a page displaying the following information: Company policy prohibits access to the following website. Which of the following is MOST likely in place at the users company?  

    • Content filter

    • Application layer firewall

    • Web load balancer

    • NIDS

    Correct Answer
    A. Content filter
    Explanation
    The most likely scenario in place at the user's company is a content filter. A content filter is a software or hardware solution that is used to restrict or control the types of content that can be accessed on the internet. In this case, the company policy prohibits access to certain websites, indicating that there is a content filter in place to enforce this policy.

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  • 28. 

    Which of the following protocols does a router use to communicate packets to other routers?  

    • RIP

    • VLAN

    • STP

    • VTP

    Correct Answer
    A. RIP
    Explanation
    A router uses the RIP (Routing Information Protocol) to communicate packets to other routers. RIP is a dynamic routing protocol that allows routers to exchange information about the network topology and determine the best path for forwarding packets. RIP uses a distance-vector algorithm to calculate the metric (hop count) to reach a destination network. By sharing this information with other routers, RIP enables the routers to update their routing tables and make informed decisions about the most efficient routes for packet forwarding.

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  • 29. 

    A technician is having intermittent connectivity problems with a hotel's wireless network. Using the laptop's wireless utility, the technician sees three access points all using channel 11. Which of the following describes the reason for the connectivity problems?

    • Beacon rate

    • Attenuation

    • Interference

    • Crosstalk

    Correct Answer
    A. Interference
    Explanation
    The reason for the connectivity problems is interference. When multiple access points are using the same channel, it can cause interference and result in intermittent connectivity issues. Interference occurs when the wireless signals from different devices overlap and disrupt each other's transmission. In this case, having three access points all using channel 11 can cause interference and lead to connectivity problems for the technician.

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  • 30. 

    Which of the following allows for multiple operating systems to be run simultaneously on a single server? A. Dual boot B. Multiple hard drives C. PXE boot D. Virtual machines

    • Dual boot

    • Multiple hard drives

    • PXE boot

    • Virtual machines

    Correct Answer
    A. Virtual machines
    Explanation
    Virtual machines allow for multiple operating systems to be run simultaneously on a single server. This is achieved by using virtualization technology that allows the creation of virtual instances of computers within a physical server. Each virtual machine can run its own operating system, independent of the others, allowing for efficient utilization of hardware resources and the ability to run different operating systems on the same server. Dual boot, multiple hard drives, and PXE boot do not provide the same level of flexibility and efficiency as virtual machines.

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  • 31. 

    Which of the following BEST describes how packets are delivered to the destination node?  

    • Routing table

    • Metrics

    • Convergence

    • Neighbor status

    Correct Answer
    A. Routing table
    Explanation
    The routing table is a data structure used by routers to determine the best path for forwarding packets to their destination. It contains information about the network topology and the available routes. When a packet arrives at a router, the routing table is consulted to determine the next hop for the packet. This process continues until the packet reaches its destination node. Therefore, the routing table plays a crucial role in ensuring that packets are delivered to the correct destination node.

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  • 32. 

    Which of the following utilities would a technician use to determine the location of lost packets on a routed network?

    • Ping

    • Nslookup

    • Route

    • Tracert

    Correct Answer
    A. Tracert
    Explanation
    A technician would use the utility "tracert" to determine the location of lost packets on a routed network. Tracert stands for "trace route" and it is a command-line tool that traces the route that packets take from the source to the destination. By sending a series of packets with increasing time-to-live (TTL) values, tracert can identify the routers or network devices that the packets pass through. This can help identify where the packets are being lost or experiencing delays, allowing the technician to troubleshoot and resolve the issue.

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  • 33. 

    Which of the following authentication protocols is typically employed in Cisco networks?  

    • NTLMv2

    • TACACS+

    • Kerberos

    • MS CHAP

    Correct Answer
    A. TACACS+
    Explanation
    TACACS+ is typically employed in Cisco networks as an authentication protocol. TACACS+ provides separate authentication, authorization, and accounting services, making it more robust and secure compared to other protocols. It allows for centralized control and management of user access to network resources, making it an ideal choice for Cisco networks. NTLMv2, Kerberos, and MS CHAP are also authentication protocols, but they are not specifically associated with Cisco networks.

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  • 34. 

    While troubleshooting DHCP configurations, a technician notices that the address pool is full of active leases although the workstations may not even be on the network. Which of the following would be the BEST solution?  

    • Disabled the DHCP server and set static IP addresses

    • Increase the lease time on the DHCP server

    • Shorten the lease time on the DHCP server

    • Subnet the IP address

    Correct Answer
    A. Shorten the lease time on the DHCP server
    Explanation
    Shortening the lease time on the DHCP server would be the best solution in this scenario. By reducing the lease time, the DHCP server will reclaim inactive IP addresses more quickly, allowing them to be reused by other devices. This will help free up the address pool and prevent it from becoming full with active leases, even when the workstations are not on the network.

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  • 35. 

    Which of the following devices is unable to differentiate the appropriate destination of intended traffic on a network?  

    • Bridge

    • Unmanaged switch

    • Hub

    • Managed switch

    Correct Answer
    A. Hub
    Explanation
    A hub is unable to differentiate the appropriate destination of intended traffic on a network. Unlike a switch or a bridge, which can analyze the destination address of each packet and forward it only to the intended recipient, a hub simply broadcasts all incoming traffic to all connected devices. This means that all devices connected to a hub will receive all traffic, regardless of whether it is intended for them or not. Therefore, a hub is not able to differentiate and direct traffic to the appropriate destination.

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  • 36. 

    An administrator is at a clients site to figure out an intermittent network problem. Which of the following is the FIRST step in the troubleshooting methodology that should be performed?  

    • Implement and test the solution.

    • Create an action plan and solution identifying potential effects.

    • Identify the affected areas of the network.

    • Gather information.

    Correct Answer
    A. Gather information.
    Explanation
    The first step in troubleshooting methodology should be to gather information. This is important because without gathering information about the problem, it would be difficult to identify the root cause and come up with an effective solution. By gathering information, the administrator can gather details about the intermittent network problem, such as when it occurs, which areas of the network are affected, and any other relevant information that can help in diagnosing and resolving the issue. Once enough information is gathered, the administrator can then proceed with creating an action plan and solution, implementing and testing the solution, and identifying potential effects.

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  • 37. 

    A technician changes a VLAN name from VLAN10 to VLAN20 in a switch. Which of the following should be updated?  

    • Wiring diagram

    • Physical network diagram

    • Network baseline

    • Logical network diagram

    Correct Answer
    A. Logical network diagram
    Explanation
    When a technician changes a VLAN name from VLAN10 to VLAN20 in a switch, the logical network diagram should be updated. The logical network diagram represents the logical structure and configuration of the network, including VLANs. By updating the logical network diagram, it ensures that the documentation accurately reflects the changes made to the VLAN name, allowing for better understanding and management of the network.

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  • 38. 

    A home user reports an issue with the wireless network connection on a laptop. It seems to occur only when the phone rings. Which of the following should be changed to resolve the issue?

    • Change the channel of the WAP.

    • Change the wireless security that is being used.

    • Rename the SSID.

    • Relocate the antenna to another area.

    Correct Answer
    A. Change the channel of the WAP.
  • 39. 

    Which of the following is an example of two-factor authentication?  

    • A username and PIN

    • A username and password

    • A username, password, finger print scan, and smart card

    • A username, password, and key fob number

    Correct Answer
    A. A username, password, and key fob number
    Explanation
    An example of two-factor authentication is when a user is required to provide two different types of credentials to access a system or account. In this case, a username, password, and key fob number are required. The username and password serve as the first factor, while the key fob number serves as the second factor. This additional layer of security helps to verify the identity of the user and protect against unauthorized access.

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  • 40. 

    Which of the following tools will allow an administrator to troubleshoot connectivity problems between two networks?  

    • Winipcfg

    • Ipconfig

    • Tracert

    • ifconfig

    Correct Answer
    A. Tracert
    Explanation
    Tracert is a tool that allows an administrator to troubleshoot connectivity problems between two networks. It traces the route that packets take from the source network to the destination network, showing the IP addresses of each hop along the way. This can help identify where the connectivity issue is occurring and assist in troubleshooting and resolving the problem.

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  • 41. 

    If network devices are all plugged into an Ethernet switch, the physical network topology is a:  

    • Star

    • Mesh

    • Ring

    • Point-to-point

    Correct Answer
    A. Star
    Explanation
    If all network devices are plugged into an Ethernet switch, the physical network topology is a star. In a star topology, all devices are connected to a central hub or switch, forming a star-like structure. This allows for easy management and troubleshooting, as any device can be easily disconnected or added to the network without affecting the other devices. Additionally, the failure of one device does not impact the rest of the network.

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  • 42. 

    Which of the following cable types has immunity from EMI?

    • UTP

    • Plenum

    • STP

    • Fiber

    Correct Answer
    A. Fiber
    Explanation
    Fiber optic cables have immunity from electromagnetic interference (EMI) due to their unique design. Unlike other cable types, fiber optic cables transmit data using light signals rather than electrical signals. This means that they are not affected by EMI, which is caused by electromagnetic radiation interfering with electrical signals. Therefore, fiber optic cables are an ideal choice in environments where EMI is a concern, such as in industrial settings or areas with high levels of electrical interference.

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  • 43. 

    A client is having problems getting a wireless signal to the entire warehouse; right now the AP is located at the far northern end of the building. The AP frequency is strong enough to cover the entire building. Which of the following is the MOST likely reason the AP is not covering the entire area?

    • Standard mismatch

    • Incorrect channel

    • Incorrect placement

    • Encryption type

    Correct Answer
    A. Incorrect placement
    Explanation
    The most likely reason the AP is not covering the entire area is incorrect placement. Since the AP is located at the far northern end of the building, its signal may not be able to reach the entire warehouse. Moving the AP to a more central location would likely improve coverage throughout the building.

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  • 44. 

    When testing CAT5e cables that were recently terminated, the testing device reports near end crosstalk. Which of the following is the MOST likely cause of this problem?  

    • The cable jacket is plenum rated.

    • The cable is shielded.

    • The technician used RJ-11 connectors on the wire.

    • The technician did not leave enough twists on the pairs.

    Correct Answer
    A. The technician did not leave enough twists on the pairs.
    Explanation
    Near end crosstalk (NEXT) is a common issue in networking cables where signals from one pair of wires interfere with signals on another pair. This interference can occur if the pairs are not twisted tightly enough, which helps to minimize crosstalk. Therefore, the most likely cause of the reported near end crosstalk is that the technician did not leave enough twists on the pairs when terminating the CAT5e cables.

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  • 45. 

    In which of the following wireless standards is MIMO used?  

    • 802.11a

    • 802.11b

    • 802.11g

    • 802.11n

    Correct Answer
    A. 802.11n
    Explanation
    MIMO (Multiple Input Multiple Output) is a wireless technology that uses multiple antennas to improve the performance and speed of wireless communication. It is used in the 802.11n wireless standard to increase the data throughput and range of Wi-Fi networks. Therefore, the correct answer is 802.11n.

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  • 46. 

    Which of the following protocols can be found at the transport layer?  

    • HTTP

    • UDP

    • FTP

    • DNS

    Correct Answer
    A. UDP
    Explanation
    UDP (User Datagram Protocol) can be found at the transport layer. UDP is a connectionless protocol that provides a simple way to send datagrams over an IP network. It is often used for applications that require low latency and are not sensitive to packet loss, such as streaming media or online gaming. Unlike TCP, UDP does not provide reliable delivery or error checking, making it faster but less reliable. HTTP, FTP, and DNS are application layer protocols that rely on TCP for reliable delivery and error checking.

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  • 47. 

    Which of the following uses eight groups of characters for addressing?  

    • MAC

    • IPv4

    • IPv6

    • DHCP

    Correct Answer
    A. IPv6
    Explanation
    IPv6 uses eight groups of characters for addressing. Each group is separated by a colon (:), and each group consists of four hexadecimal digits. This allows for a much larger address space compared to IPv4, which uses four groups of characters. The increased address space in IPv6 is necessary to accommodate the growing number of devices connected to the internet.

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  • 48. 

    Which of the following WAN technologies uses labels to make forwarding decisions?  

    • MPLS

    • Frame-relay

    • ISDN

    • ATM

    Correct Answer
    A. MPLS
    Explanation
    MPLS (Multi-Protocol Label Switching) is a WAN technology that uses labels to make forwarding decisions. Labels are attached to packets and used to determine the path that the packets should take through the network. This allows for efficient and fast forwarding of data, as the labels can be quickly processed by network devices. MPLS is commonly used in large networks to prioritize traffic and provide quality of service. Frame-relay, ISDN, and ATM are other WAN technologies, but they do not use labels for forwarding decisions.

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  • 49. 

    After a technician has established a plan of action to resolve the problem, which of the following steps should be performed NEXT?

    • Establish a theory of probable cause.

    • Implement preventative measures.

    • Verify full system functionality.

    • Implement the solution of escalate as necessary.

    Correct Answer
    A. Implement the solution of escalate as necessary.
    Explanation
    After a technician has established a plan of action to resolve the problem, the next step should be to implement the solution or escalate as necessary. This means that the technician should start working on resolving the problem based on the plan they have created. If the plan involves implementing a solution directly, the technician should proceed with that. However, if the plan requires further assistance or escalation to higher-level support, the technician should follow the necessary steps to ensure the problem gets resolved effectively.

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  • Current Version
  • Aug 30, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 14, 2011
    Quiz Created by
    Tmede212

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