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Questions and Answers
What standard should the systems administrator select to improve WiFi performance in a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
What standard should the systems administrator select to improve WiFi performance in a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
Which protocol would be BEST to use for detecting a MAC spoofing attack?
Which protocol would be BEST to use for detecting a MAC spoofing attack?
What tool should a technician use to troubleshoot high amounts of jitter in a wireless network with large variations in latency?
What tool should a technician use to troubleshoot high amounts of jitter in a wireless network with large variations in latency?
Which step will MOST likely determine the cause of intermittent internet connectivity issues reported by wireless users?
Which step will MOST likely determine the cause of intermittent internet connectivity issues reported by wireless users?
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In the scenario described, what attack was the network administrator able to prevent?
In the scenario described, what attack was the network administrator able to prevent?
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Where would a network administrator MOST likely start to troubleshoot when a network is experiencing CRC errors?
Where would a network administrator MOST likely start to troubleshoot when a network is experiencing CRC errors?
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To resolve the issue of an exhausted DHCP scope without creating a new pool, what can the administrator do?
To resolve the issue of an exhausted DHCP scope without creating a new pool, what can the administrator do?
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Which switch feature is MOST likely to be used for logging IPv6 and MAC addresses periodically?
Which switch feature is MOST likely to be used for logging IPv6 and MAC addresses periodically?
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As an alias to another record, which DNS record should an administrator use?
As an alias to another record, which DNS record should an administrator use?
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What should a technician utilize to gather metrics from a switch?
What should a technician utilize to gather metrics from a switch?
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Why are critical events not being received by the syslog server?
Why are critical events not being received by the syslog server?
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What is the best way to secure a new datacenter in a different region communicating with an old datacenter?
What is the best way to secure a new datacenter in a different region communicating with an old datacenter?
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Which technology provides a failover mechanism for the default gateway?
Which technology provides a failover mechanism for the default gateway?
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What action can an administrator take to easily mitigate users connecting to the guest wireless network for inappropriate downloads?
What action can an administrator take to easily mitigate users connecting to the guest wireless network for inappropriate downloads?
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What is the term for attempting to find a network password by inputting common words and phrases?
What is the term for attempting to find a network password by inputting common words and phrases?
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What would likely happen due to mismatched duplex settings on network devices?
What would likely happen due to mismatched duplex settings on network devices?
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What is the BEST way to describe a network topology where all devices are connected to a central hub?
What is the BEST way to describe a network topology where all devices are connected to a central hub?
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To prevent unauthorized modifications to a network, which document would be the MOST suitable to enforce version control and change management?
To prevent unauthorized modifications to a network, which document would be the MOST suitable to enforce version control and change management?
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Which scenario is MOST likely to generate significant East-West traffic in a datacenter environment?
Which scenario is MOST likely to generate significant East-West traffic in a datacenter environment?
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What should a technician check first when a network switch stops responding intermittently while in debugging mode?
What should a technician check first when a network switch stops responding intermittently while in debugging mode?
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In a deployment with multiple WAPs broadcasting the same SSID for client access, what does this configuration represent?
In a deployment with multiple WAPs broadcasting the same SSID for client access, what does this configuration represent?
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What needs to be configured for two networks to reach each other when getting 'U.U.U.U' response during a ping attempt?
What needs to be configured for two networks to reach each other when getting 'U.U.U.U' response during a ping attempt?
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'Zero Trust' in network security primarily aims to:
'Zero Trust' in network security primarily aims to:
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'PaaS' is a service model that would likely replace on-premises servers with cloud solutions. What does 'PaaS' stand for?
'PaaS' is a service model that would likely replace on-premises servers with cloud solutions. What does 'PaaS' stand for?
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When evaluating a firewall for protecting east-west traffic in a datacenter, which traffic scenario is MOST relevant?
When evaluating a firewall for protecting east-west traffic in a datacenter, which traffic scenario is MOST relevant?
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What can be used to prioritize Internet usage per application and user on a network?
What can be used to prioritize Internet usage per application and user on a network?
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To query the NSs for a remote application, what command would be most useful for the network administrator?
To query the NSs for a remote application, what command would be most useful for the network administrator?
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Which of the following technologies would be most suitable for optimizing speeds for global content distribution and reducing latency in high-density user locations?
Which of the following technologies would be most suitable for optimizing speeds for global content distribution and reducing latency in high-density user locations?
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After making changes in the office, a user reports being unable to access network resources. What should a network technician do FIRST?
After making changes in the office, a user reports being unable to access network resources. What should a network technician do FIRST?
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A new cabling certification is being requested everytime a network technician rebuilds one end of a Cat 6 cable to create a crossover connection between switches. Which feature would allow the use of the original cable for this purpose?
A new cabling certification is being requested everytime a network technician rebuilds one end of a Cat 6 cable to create a crossover connection between switches. Which feature would allow the use of the original cable for this purpose?
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Which software tool would BEST help a technician find all devices connected within a network?
Which software tool would BEST help a technician find all devices connected within a network?
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In configuring a high-density wireless network for maximum channel support, which standard 802.11 frequency range should a technician look for in WAP specifications?
In configuring a high-density wireless network for maximum channel support, which standard 802.11 frequency range should a technician look for in WAP specifications?
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What should a technician configure on a network switch in a publicly accessible location to prevent unintended connections?
What should a technician configure on a network switch in a publicly accessible location to prevent unintended connections?
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Which of the following is used to track and document various types of known vulnerabilities?
Which of the following is used to track and document various types of known vulnerabilities?
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What does a network engineer need to configure on a server after setting up LACP on switchports to increase server bandwidth?
What does a network engineer need to configure on a server after setting up LACP on switchports to increase server bandwidth?
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A network technician is configuring network settings for a new device with a network block of 192.168.0.0/20. What subnet should be used?
A network technician is configuring network settings for a new device with a network block of 192.168.0.0/20. What subnet should be used?
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What is the LARGEST MTU for a standard Ethernet frame?
What is the LARGEST MTU for a standard Ethernet frame?
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According to troubleshooting methodology, what should the technician do NEXT after determining the most likely probable cause of an issue?
According to troubleshooting methodology, what should the technician do NEXT after determining the most likely probable cause of an issue?
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What type of device can provide content filtering, threat protection, and manage multiple IPSec site-to-site connections?
What type of device can provide content filtering, threat protection, and manage multiple IPSec site-to-site connections?
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What is the most likely cause of late collisions on a half-duplex link with devices configured for half duplex?
What is the most likely cause of late collisions on a half-duplex link with devices configured for half duplex?
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To ensure connectivity during a failover for two systems on a load balancer, what must the administrator configure?
To ensure connectivity during a failover for two systems on a load balancer, what must the administrator configure?
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In a high-rise building with frequent network disconnections, what is the most likely cause of the issue with mounted APs?
In a high-rise building with frequent network disconnections, what is the most likely cause of the issue with mounted APs?
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After configuring firewalls at remote branches, what should the network engineer do next to ensure successful hardening?
After configuring firewalls at remote branches, what should the network engineer do next to ensure successful hardening?
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At which OSI model layer would a technician find an IP header?
At which OSI model layer would a technician find an IP header?
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Which feature should be enabled to prevent network stability issues when configuring redundant network links between switches?
Which feature should be enabled to prevent network stability issues when configuring redundant network links between switches?
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Which routing protocol is used to exchange route information between public autonomous systems?
Which routing protocol is used to exchange route information between public autonomous systems?
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To detect the exact break point of a fiber link connecting two campus networks, what tool should an engineer use?
To detect the exact break point of a fiber link connecting two campus networks, what tool should an engineer use?
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What can be used to centrally manage credentials for various administrative privileges on configured network devices?
What can be used to centrally manage credentials for various administrative privileges on configured network devices?
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For installing new software on a Windows-based server in a different geographical location, what should a network technician use?
For installing new software on a Windows-based server in a different geographical location, what should a network technician use?
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To improve videoconferencing performance for branch users, what should the company MOST likely configure?
To improve videoconferencing performance for branch users, what should the company MOST likely configure?
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What should a network administrator check FIRST to address poor connectivity reported by users associated with a distanced AP?
What should a network administrator check FIRST to address poor connectivity reported by users associated with a distanced AP?
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Which connector type would offer the MOST flexibility?
Which connector type would offer the MOST flexibility?
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Which port is commonly used by VoIP phones?
Which port is commonly used by VoIP phones?
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What is MOST likely to be affected by jitter greater than 10ms on a WAN connection?
What is MOST likely to be affected by jitter greater than 10ms on a WAN connection?
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Which port should be blocked in the firewall configuration to prevent outside users from telnetting into servers at the datacenter?
Which port should be blocked in the firewall configuration to prevent outside users from telnetting into servers at the datacenter?
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What command should a technician run to confirm server names for Linux servers in a company's server farm?
What command should a technician run to confirm server names for Linux servers in a company's server farm?
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What is MOST likely causing extreme latency in a network with unmanaged Layer 2 switches and multiple connections between each pair?
What is MOST likely causing extreme latency in a network with unmanaged Layer 2 switches and multiple connections between each pair?
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What should a technician use to record changes to new and old equipment in a major retail store?
What should a technician use to record changes to new and old equipment in a major retail store?
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Which attack encrypts user data and requires a proper backup implementation for recovery?
Which attack encrypts user data and requires a proper backup implementation for recovery?
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To analyze attacks on a company's network, what must a network administrator implement?
To analyze attacks on a company's network, what must a network administrator implement?
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Which command should a network administrator use to ensure a database engine listens on a specific port?
Which command should a network administrator use to ensure a database engine listens on a specific port?
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What feature would BEST allow a wireless network to provide Internet access while preventing stations from communicating with each other?
What feature would BEST allow a wireless network to provide Internet access while preventing stations from communicating with each other?
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In a disaster recovery scenario with budget constraints, what concept should a company select if it needs equipment ready but not live data mirrored?
In a disaster recovery scenario with budget constraints, what concept should a company select if it needs equipment ready but not live data mirrored?
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Which command-line tool should an IT technician use to locate a break in an uplink providing connectivity to the core switch?
Which command-line tool should an IT technician use to locate a break in an uplink providing connectivity to the core switch?
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What should a technician do when link LEDs fail to light on the workstation and modem after verifying DSL synchronization?
What should a technician do when link LEDs fail to light on the workstation and modem after verifying DSL synchronization?
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Which service offers data storage, hardware options, and scalability to companies that cannot afford new devices?
Which service offers data storage, hardware options, and scalability to companies that cannot afford new devices?
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What document is likely needed to be signed before sharing project information with vendors?
What document is likely needed to be signed before sharing project information with vendors?
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What is the BEST solution for securely connecting two remote offices over an untrustworthy MAN to access each other's network shares?
What is the BEST solution for securely connecting two remote offices over an untrustworthy MAN to access each other's network shares?
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To segment departments into different networks efficiently, what should be configured in a campus network with users across multiple buildings?
To segment departments into different networks efficiently, what should be configured in a campus network with users across multiple buildings?
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What tool should the systems administrator select to improve WiFi performance for a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
What tool should the systems administrator select to improve WiFi performance for a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
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Which tool should the technician use to troubleshoot high amounts of jitter in the wireless network with large variations in latency?
Which tool should the technician use to troubleshoot high amounts of jitter in the wireless network with large variations in latency?
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What should the network administrator do to determine the cause of intermittent internet connectivity where users need to reconnect using web authentication each time?
What should the network administrator do to determine the cause of intermittent internet connectivity where users need to reconnect using web authentication each time?
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Which type of attack did the network administrator prevent when redirecting an unknown person to the security desk in the datacenter?
Which type of attack did the network administrator prevent when redirecting an unknown person to the security desk in the datacenter?
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At which layer of the OSI model will the administrator MOST likely troubleshoot if a network is experiencing CRC errors?
At which layer of the OSI model will the administrator MOST likely troubleshoot if a network is experiencing CRC errors?
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To resolve DHCP scope exhaustion without creating a new pool, what action can the administrator take?
To resolve DHCP scope exhaustion without creating a new pool, what action can the administrator take?
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Which switch feature would the administrator MOST likely use to periodically log IPv6 and MAC addresses of devices on a network segment?
Which switch feature would the administrator MOST likely use to periodically log IPv6 and MAC addresses of devices on a network segment?
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In a scenario where client devices cannot enter a network due to DHCP exhaustion, what could the administrator do to alleviate the issue?
In a scenario where client devices cannot enter a network due to DHCP exhaustion, what could the administrator do to alleviate the issue?
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What should be configured on a switch in a publicly accessible location to prevent unintended connections?
What should be configured on a switch in a publicly accessible location to prevent unintended connections?
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What should the systems administrator select to improve WiFi performance in a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
What should the systems administrator select to improve WiFi performance in a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices?
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What tool should the technician use to troubleshoot high amounts of jitter in the wireless network with large variations in latency?
What tool should the technician use to troubleshoot high amounts of jitter in the wireless network with large variations in latency?
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What step would MOST likely determine the cause of intermittent internet connectivity where users need to reconnect using web authentication each time?
What step would MOST likely determine the cause of intermittent internet connectivity where users need to reconnect using web authentication each time?
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What attack did the network administrator prevent by directing the unknown person following closely to the security desk in the datacenter?
What attack did the network administrator prevent by directing the unknown person following closely to the security desk in the datacenter?
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In the given network scenario, how should the wireless signals be configured to avoid interference?
In the given network scenario, how should the wireless signals be configured to avoid interference?
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What subnet capacity limitation should the network administrator set for the Access Points and switches in this scenario?
What subnet capacity limitation should the network administrator set for the Access Points and switches in this scenario?
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Which encryption method should the Access Points be configured to support in order to meet the given requirements?
Which encryption method should the Access Points be configured to support in order to meet the given requirements?
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At which layer of the OSI model will the network administrator MOST likely start troubleshooting if CRC errors occur?
At which layer of the OSI model will the network administrator MOST likely start troubleshooting if CRC errors occur?
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Study Notes
Wireless Network Administration
- To improve WiFi performance in a densely populated office tower with a mix of 2.4 GHz and 5 GHz devices, the systems administrator should select the 802.11ac standard.
- To detect MAC spoofing attacks, the BEST protocol to use is DHCP snooping.
- To troubleshoot high amounts of jitter in a wireless network with large variations in latency, the technician should use the iperf tool.
Network Security
- The network administrator prevented a tailgating attack by directing an unknown person to the security desk in the datacenter.
- To mitigate users connecting to the guest wireless network for inappropriate downloads, the administrator can configure the network to require authentication and implement content filtering.
Network Fundamentals
- The BEST way to describe a network topology where all devices are connected to a central hub is a Star topology.
- To prevent unauthorized modifications to a network, the MOST suitable document to enforce version control and change management is a Change Management Policy.
Network Troubleshooting
- When a network switch stops responding intermittently while in debugging mode, the technician should check the switch's configuration and logs first.
- If CRC errors occur, the network administrator should start troubleshooting at the Data Link layer (Layer 2) of the OSI model.
Network Protocols and Technologies
- The 'PaaS' service model stands for Platform as a Service, which would likely replace on-premises servers with cloud solutions.
- To query the NSs for a remote application, the network administrator can use the dig command.
Network Design and Implementation
- To ensure connectivity during a failover for two systems on a load balancer, the administrator must configure a Floating IP address.
- In a high-rise building with frequent network disconnections, the most likely cause of the issue with mounted APs is interference.
Network Management
- To centrally manage credentials for various administrative privileges on configured network devices, the administrator can use a Privileged Access Management (PAM) system.
- To record changes to new and old equipment in a major retail store, the technician should use a Configuration Management Database (CMDB).
Network Applications and Services
- To analyze attacks on a company's network, the network administrator must implement a Security Information and Event Management (SIEM) system.
- To ensure successful hardening of firewalls at remote branches, the network engineer should next implement a vulnerability management process.
Network Architecture
- In a disaster recovery scenario with budget constraints, the company should select a Cold Site, which provides equipment ready but not live data mirrored.
- To segment departments into different networks efficiently, the network administrator should configure VLANs in a campus network with users across multiple buildings.
Network Cabling and Wiring
- To prevent unintended connections, the technician should configure Port Security on a network switch in a publicly accessible location.
- To detect the exact break point of a fiber link connecting two campus networks, the engineer should use an Optical Time-Domain Reflectometer (OTDR).
Network Storage and Virtualization
- To store data, hardware options, and scalability for companies that cannot afford new devices, the service that offers this is Cloud Storage.
- To ensure a database engine listens on a specific port, the network administrator should use the(netstat -an | grep ) command.
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Description
Test your knowledge on TCP ports used by Windows OS for file sharing and troubleshooting wireless AP coverage. Questions range from identifying TCP ports to troubleshooting poor connectivity in wireless networks.
