NEt+ET24 Flashcards
Net+ jammin
A systems administrator needs to improve WiFi performance in a densely populated office tower and use the latest standard. There is a mix of devices that use
2.4 GHz and 5 GHz. Which of the following should the systems administrator select to meet this requirement?
A. 802.11ac
B. 802.11ax
C. 802.11g
D. 802.11n
A systems administrator needs to improve WiFi performance in a densely populated office tower and use the latest standard. There is a mix of devices that use
2.4 GHz and 5 GHz. Which of the following should the systems administrator select to meet this requirement?
B. 802.11ax
Which of the following would be BEST to use to detect a MAC spoofing attack?
A. Internet Control Message Protocol
B. Reverse Address Resolution Protocol
C. Dynamic Host Configuration Protocol
D. Internet Message Access Protocol
Which of the following would be BEST to use to detect a MAC spoofing attack?
B. Reverse Address Resolution Protocol
A technician receives feedback that some users are experiencing high amounts of jitter while using the wireless network. While troubleshooting the network, the technician uses the ping command with the IP address of the default gateway and verifies large variations in latency. The technician thinks the issue may be interference from other networks and non-802.11 devices. Which of the following tools should the technician use to troubleshoot the issue?
A. NetFlow analyzer
B. Bandwidth analyzer
C. Protocol analyzer
D. Spectrum analyzer
A technician receives feedback that some users are experiencing high amounts of jitter while using the wireless network. While troubleshooting the network, the technician uses the ping command with the IP address of the default gateway and verifies large variations in latency. The technician thinks the issue may be interference from other networks and non-802.11 devices. Which of the following tools should the technician use to troubleshoot the issue?
D. Spectrum analyzer
Wireless users are reporting intermittent internet connectivity. Connectivity is restored when the users disconnect and reconnect, utilizing the web authentication process each time. The network administrator can see the devices connected to the APs at all times. Which of the following steps will MOST likely determine the cause of the issue?
A. Verify the session time-out configuration on the captive portal settings
B. Check for encryption protocol mismatch on the client’s wireless settings
C. Confirm that a valid passphrase is being used during the web authentication
D. Investigate for a client’s disassociation caused by an evil twin AP
Wireless users are reporting intermittent internet connectivity. Connectivity is restored when the users disconnect and reconnect, utilizing the web authentication process each time. The network administrator can see the devices connected to the APs at all times. Which of the following steps will MOST likely determine the cause of the issue?
A. Verify the session time-out configuration on the captive portal settings
A network administrator walks into a datacenter and notices an unknown person is following closely. The administrator stops and directs the person to the security desk. Which of the following attacks did the network administrator prevent?
A. Evil twin
B. Tailgating
C. Piggybacking
D. Shoulder surfing
A network administrator walks into a datacenter and notices an unknown person is following closely. The administrator stops and directs the person to the security desk. Which of the following attacks did the network administrator prevent?
B. Tailgating
SIMULATION -
You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:
✑ The SSIDs need to be configured as CorpNet with a key of S3cr3t!
✑ The wireless signals should not interfere with each other
✑ The subnet the Access Points and switch are on should only support 30 devices maximum
✑ The Access Points should be configured to only support TKIP clients at a maximum speed
INSTRUCTONS -
Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
SIMULATION -
You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:
✑ The SSIDs need to be configured as CorpNet with a key of S3cr3t!
✑ The wireless signals should not interfere with each other
✑ The subnet the Access Points and switch are on should only support 30 devices maximum
✑ The Access Points should be configured to only support TKIP clients at a maximum speed
INSTRUCTONS -
Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
A network is experiencing a number of CRC errors during normal network communication. At which of the following layers of the OSI model will the administrator
MOST likely start to troubleshoot?
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 5
F. Layer 6
G. Layer 7
A network is experiencing a number of CRC errors during normal network communication. At which of the following layers of the OSI model will the administrator
MOST likely start to troubleshoot?
B. Layer 2
A client recently added 100 users who are using VMs. All users have since reported slow or unresponsive desktops. Reports show minimal network congestion, zero packet loss, and acceptable packet delay. Which of the following metrics will MOST accurately show the underlying performance issues? (Choose two.)
A. CPU usage
B. Memory
C. Temperature
D. Bandwidth
E. Latency
F. Jitter
A client recently added 100 users who are using VMs. All users have since reported slow or unresponsive desktops. Reports show minimal network congestion, zero packet loss, and acceptable packet delay. Which of the following metrics will MOST accurately show the underlying performance issues? (Choose two.)
A. CPU usage
B. Memory
Client devices cannot enter a network, and the network administrator determines the DHCP scope is exhausted. The administrator wants to avoid creating a new
DHCP pool. Which of the following can the administrator perform to resolve the issue?
A. Install load balancers
B. Install more switches
C. Decrease the number of VLANs
D. Reduce the lease time
Client devices cannot enter a network, and the network administrator determines the DHCP scope is exhausted. The administrator wants to avoid creating a new
DHCP pool. Which of the following can the administrator perform to resolve the issue?
D. Reduce the lease time
An administrator is writing a script to periodically log the IPv6 and MAC addresses of all the devices on a network segment. Which of the following switch features will MOST likely be used to assist with this task?
A. Spanning Tree Protocol
B. Neighbor Discovery Protocol
C. Link Aggregation Control Protocol
D. Address Resolution Protocol
An administrator is writing a script to periodically log the IPv6 and MAC addresses of all the devices on a network segment. Which of the following switch features will MOST likely be used to assist with this task?
B. Neighbor Discovery Protocol
Which of the following DNS records works as an alias to another record?
A. AAAA
B. CNAME
C. MX
D. SOA
Which of the following DNS records works as an alias to another record?
B. CNAME
A company built a new building at its headquarters location. The new building is connected to the company’s LAN via fiber-optic cable. Multiple users in the new building are unable to access the company’s intranet site via their web browser, but they are able to access internet sites. Which of the following describes how the network administrator can resolve this issue?
A. Correct the DNS server entries in the DHCP scope
B. Correct the external firewall gateway address
C. Correct the NTP server settings on the clients
D. Correct a TFTP Issue on the company’s server
A company built a new building at its headquarters location. The new building is connected to the company’s LAN via fiber-optic cable. Multiple users in the new building are unable to access the company’s intranet site via their web browser, but they are able to access internet sites. Which of the following describes how the network administrator can resolve this issue?
A. Correct the DNS server entries in the DHCP scope
A technician is installing a new fiber connection to a network device in a datacenter. The connection from the device to the switch also traverses a patch panel connection. The chain of connections is in the following order:
✑ Device
✑ LC/LC patch cable
✑ Patch panel
✑ Cross-connect fiber cable
✑ Patch panel
✑ LC/LC patch cable
✑ Switch
The connection is not working. The technician has changed both patch cables with known working patch cables. The device had been tested and was working properly before being installed. Which of the following is the MOST likely cause of the issue?
A. TX/RX is reversed
B. An incorrect cable was used
C. The device failed during installation
D. Attenuation is occurring
A technician is installing a new fiber connection to a network device in a datacenter. The connection from the device to the switch also traverses a patch panel connection. The chain of connections is in the following order:
✑ Device
✑ LC/LC patch cable
✑ Patch panel
✑ Cross-connect fiber cable
✑ Patch panel
✑ LC/LC patch cable
✑ Switch
The connection is not working. The technician has changed both patch cables with known working patch cables. The device had been tested and was working properly before being installed. Which of the following is the MOST likely cause of the issue?
A. TX/RX is reversed
A technician is searching for a device that is connected to the network and has the device’s physical network address. Which of the following should the technician review on the switch to locate the device’s network port?
A. IP route table
B. VLAN tag
C. MAC table
D. QoS tag
A technician is searching for a device that is connected to the network and has the device’s physical network address. Which of the following should the technician review on the switch to locate the device’s network port?
C. MAC table
Which of the following provides redundancy on a file server to ensure the server is still connected to a LAN even in the event of a port failure on a switch?
A. NIC teaming
B. Load balancer
C. RAID array
D. PDUs
Which of the following provides redundancy on a file server to ensure the server is still connected to a LAN even in the event of a port failure on a switch?
A. NIC teaming
An IT organization needs to optimize speeds for global content distribution and wants to reduce latency in high-density user locations. Which of the following technologies BEST meets the organization’s requirements?
A. Load balancing
B. Geofencing
C. Public cloud
D. Content delivery network
E. Infrastructure as a service
An IT organization needs to optimize speeds for global content distribution and wants to reduce latency in high-density user locations. Which of the following technologies BEST meets the organization’s requirements?
D. Content delivery network
A user reports being unable to access network resources after making some changes in the office. Which of the following should a network technician do FIRST?
A. Check the system’s IP address
B. Do a ping test against the servers
C. Reseat the cables into the back of the PC
D. Ask what changes were made
A user reports being unable to access network resources after making some changes in the office. Which of the following should a network technician do FIRST?
D. Ask what changes were made
A new cabling certification is being requested every time a network technician rebuilds one end of a Cat 6 (vendor-certified) cable to create a crossover connection that is used to connect switches. Which of the following would address this issue by allowing the use of the original cable?
A. CSMA/CD
B. LACP
C. PoE+
D. MDIX
A new cabling certification is being requested every time a network technician rebuilds one end of a Cat 6 (vendor-certified) cable to create a crossover connection that is used to connect switches. Which of the following would address this issue by allowing the use of the original cable?
D. MDIX
A company hired a technician to find all the devices connected within a network. Which of the following software tools would BEST assist the technician in completing this task?
A. IP scanner
B. Terminal emulator
C. NetFlow analyzer
D. Port scanner
A company hired a technician to find all the devices connected within a network. Which of the following software tools would BEST assist the technician in completing this task?
A. IP scanner
A technician is installing a high-density wireless network and wants to use an available frequency that supports the maximum number of channels to reduce interference. Which of the following standard 802.11 frequency ranges should the technician look for while reviewing WAP specifications?
A. 2.4GHz
B. 5GHz
C. 6GHz
D. 900MHz
A technician is installing a high-density wireless network and wants to use an available frequency that supports the maximum number of channels to reduce interference. Which of the following standard 802.11 frequency ranges should the technician look for while reviewing WAP specifications?
B. 5GHz
A technician is configuring a network switch to be used in a publicly accessible location. Which of the following should the technician configure on the switch to prevent unintended connections?
A. DHCP snooping
B. Geofencing
C. Port security
D. Secure SNMP
A technician is configuring a network switch to be used in a publicly accessible location. Which of the following should the technician configure on the switch to prevent unintended connections?
C. Port security
Which of the following is used to track and document various types of known vulnerabilities?
A. CVE
B. Penetration testing
C. Zero-day
D. SIEM
E. Least privilege
Which of the following is used to track and document various types of known vulnerabilities?
A. CVE
The network administrator is informed that a user’s email password is frequently hacked by brute-force programs. Which of the following policies should the network administrator implements to BEST mitigate this issue? (Choose two.)
A. Captive portal
B. Two-factor authentication
C. Complex passwords
D. Geofencing
E. Role-based access
F. Explicit deny
The network administrator is informed that a user’s email password is frequently hacked by brute-force programs. Which of the following policies should the network administrator implements to BEST mitigate this issue? (Choose two.)
B. Two-factor authentication
C. Complex passwords
A network engineer performs the following tasks to increase server bandwidth:
✑ Connects two network cables from the server to a switch stack
✑ Configure LACP on the switchports
Verifies the correct configurations on the switch interfaces
Which of the following needs to be configured on the server?
A. Load balancing
B. Multipathing
C. NIC teaming
D. Clustering
A network engineer performs the following tasks to increase server bandwidth:
✑ Connects two network cables from the server to a switch stack
✑ Configure LACP on the switchports
Verifies the correct configurations on the switch interfaces
Which of the following needs to be configured on the server?
C. NIC teaming
A network technician is manually configuring the network settings for a new device and is told the network block is 192.168.0.0/20. Which of the following subnets should the technician use?
A. 255.255.128.0
B. 255.255.192.0
C. 255.255.240.0
D. 255.255.248.0
A network technician is manually configuring the network settings for a new device and is told the network block is 192.168.0.0/20. Which of the following subnets should the technician use?
C. 255.255.240.0
Which of the following is the LARGEST MTU for a standard Ethernet frame?
A. 1452
B. 1492
C. 1500
D. 2304
Which of the following is the LARGEST MTU for a standard Ethernet frame?
C. 1500
Given the following information:
Which of the following command-line tools would generate this output?
A. netstat
B. arp
C. dig
D. tracert
Given the following information:
Which of the following command-line tools would generate this output?
A. netstat
According to troubleshooting methodology, which of the following should the technician do NEXT after determining the most likely probable cause of an issue?
A. Establish a plan of action to resolve the issue and identify potential effects
B. Verify full system functionality and, if applicable, implement preventive measures
C. Implement the solution or escalate as necessary
D. Test the theory to determine the cause
According to troubleshooting methodology, which of the following should the technician do NEXT after determining the most likely probable cause of an issue?
D. Test the theory to determine the cause
Which of the following BEST describes a network appliance that warns of unapproved devices that are accessing the network?
A. Firewall
B. AP
C. Proxy server
D. IDS
Which of the following BEST describes a network appliance that warns of unapproved devices that are accessing the network?
D. IDS
A technician is installing a cable modem in a SOHO. Which of the following cable types will the technician MOST likely use to connect a modem to the ISP?
A. Coaxial
B. Single-mode fiber
C. Cat 6e
D. Multimode fiber
A technician is installing a cable modem in a SOHO. Which of the following cable types will the technician MOST likely use to connect a modem to the ISP?
A. Coaxial
A network technician is reviewing the interface counters on a router interface. The technician is attempting to confirm a cable issue. Given the following information:
Which of the following metrics confirms there is a cabling issue?
A. Last cleared
B. Number of packets output
C. CRCs
D. Giants
E. Multicasts
A network technician is reviewing the interface counters on a router interface. The technician is attempting to confirm a cable issue. Given the following information:
Which of the following metrics confirms there is a cabling issue?
C. CRCs
Which of the following is the physical topology for an Ethernet LAN?
A. Bus
B. Ring
C. Mesh
D. Star
Which of the following is the physical topology for an Ethernet LAN?
D. Star
An IT director is setting up new disaster and HA policies for a company. Limited downtime is critical to operations. To meet corporate requirements, the director set up two different datacenters across the country that will stay current on data and applications. In the event of an outage, the company can immediately switch from one datacenter to another. Which of the following does this BEST describe?
A. A warm site
B. Data mirroring
C. Multipathing
D. Load balancing
E. A hot site
An IT director is setting up new disaster and HA policies for a company. Limited downtime is critical to operations. To meet corporate requirements, the director set up two different datacenters across the country that will stay current on data and applications. In the event of an outage, the company can immediately switch from one datacenter to another. Which of the following does this BEST describe?
E. A hot site
The management team needs to ensure unnecessary modifications to the corporate network are not permitted and version control is maintained. Which of the following documents would BEST support this?
A. An incident response plan
B. A business continuity plan
C. A change management policy
D. An acceptable use policy
The management team needs to ensure unnecessary modifications to the corporate network are not permitted and version control is maintained. Which of the following documents would BEST support this?
C. A change management policy
Which of the following is MOST likely to generate significant East-West traffic in a datacenter?
A. A backup of a large video presentation to cloud storage for archival purposes
B. A duplication of a hosted virtual server to another physical server for redundancy
C. A download of navigation data to a portable device for offline access
D. A query from an IoT device to a cloud-hosted server for a firmware update
Which of the following is MOST likely to generate significant East-West traffic in a datacenter?
B. A duplication of a hosted virtual server to another physical server for redundancy
A technician is troubleshooting a network switch that seems to stop responding to requests intermittently whenever the logging level is set for debugging. Which of the following metrics should the technician check to begin troubleshooting the issue?
A. Audit logs
B. CPU utilization
C. CRC errors
D. Jitter
A technician is troubleshooting a network switch that seems to stop responding to requests intermittently whenever the logging level is set for debugging. Which of the following metrics should the technician check to begin troubleshooting the issue?
B. CPU utilization
A technician wants to deploy a new wireless network that comprises 30 WAPs installed throughout a three-story office building. All the APs will broadcast the same SSID for client access. Which of the following BEST describes this deployment?
A. Extended service set
B. Basic service set
C. Unified service set
D. Independent basic service set
A technician wants to deploy a new wireless network that comprises 30 WAPs installed throughout a three-story office building. All the APs will broadcast the same SSID for client access. Which of the following BEST describes this deployment?
A. Extended service set
A user tries to ping 192.168.1.100 from the command prompt on the 192.168.2.101 network but gets the following response: U.U.U.U. Which of the following needs to be configured for these networks to reach each other?
A. Network address translation
B. Default gateway
C. Loopback
D. Routing protocol
A user tries to ping 192.168.1.100 from the command prompt on the 192.168.2.101 network but gets the following response: U.U.U.U. Which of the following needs to be configured for these networks to reach each other?
B. Default gateway
A branch of a company recently switched to a new ISP. The network engineer was given a new IP range to assign. The ISP assigned 196.26.4.0/26, and the branch gateway router now has the following configurations on the interface that peers to the ISP:
The network engineer observes that all users have lost Internet connectivity. Which of the following describes the issue?
A. The incorrect subnet mask was configured
B. The incorrect gateway was configured
C. The incorrect IP address was configured
D. The incorrect interface was configured
A branch of a company recently switched to a new ISP. The network engineer was given a new IP range to assign. The ISP assigned 196.26.4.0/26, and the branch gateway router now has the following configurations on the interface that peers to the ISP:
The network engineer observes that all users have lost Internet connectivity. Which of the following describes the issue?
B. The incorrect gateway was configured
Within the realm of network security, Zero Trust:
A. prevents attackers from moving laterally through a system.
B. allows a server to communicate with outside networks without a firewall.
C. block malicious software that is too new to be found in virus definitions.
D. stops infected files from being downloaded via websites.
Within the realm of network security, Zero Trust:
A. prevents attackers from moving laterally through a system.
Which of the following service models would MOST likely be used to replace on-premises servers with a cloud solution?
A. PaaS
B. IaaS
C. SaaS
D. Disaster recovery as a Service (DRaaS)
Which of the following service models would MOST likely be used to replace on-premises servers with a cloud solution?
B. IaaS
Which of the following factors should be considered when evaluating a firewall to protect a datacenter’s east-west traffic?
A. Replication traffic between an on-premises server and a remote backup facility
B. Traffic between VMs running on different hosts
C. Concurrent connections generated by Internet DDoS attacks
D. VPN traffic from remote offices to the datacenter’s VMs
Which of the following factors should be considered when evaluating a firewall to protect a datacenter’s east-west traffic?
B. Traffic between VMs running on different hosts
SIMULATION -
You are tasked with verifying the following requirements are met in order to ensure network security.
Requirements:
✑ Datacenter
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide a dedicated server to resolve IP addresses and hostnames correctly and handle port 53 traffic
✑ Building A
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide devices to support 5 additional different office users
- Add an additional mobile user
- Replace the Telnet server with a more secure solution
✑ Screened subnet
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide a server to handle external 80/443 traffic
- Provide a server to handle port 20/21 traffic
INSTRUCTIONS -
Drag and drop objects onto the appropriate locations. Objects can be used multiple times and not all placeholders need to be filled.
Available objects are located in both the Servers and Devices tabs of the Drag & Drop menu.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
SIMULATION -
You are tasked with verifying the following requirements are met in order to ensure network security.
Requirements:
✑ Datacenter
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide a dedicated server to resolve IP addresses and hostnames correctly and handle port 53 traffic
✑ Building A
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide devices to support 5 additional different office users
- Add an additional mobile user
- Replace the Telnet server with a more secure solution
✑ Screened subnet
- Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage
- Provide a server to handle external 80/443 traffic
- Provide a server to handle port 20/21 traffic
INSTRUCTIONS -
Drag and drop objects onto the appropriate locations. Objects can be used multiple times and not all placeholders need to be filled.
Available objects are located in both the Servers and Devices tabs of the Drag & Drop menu.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Correct Answer: See explanation below.
Top left subnet ג€” 206.208.134.0/28
Top right subnet ג€” 10.72.63.0/28
Bottom subnet ג€” 192.168.11.0/28
Screened Subnet devices ג€” Web server, FTP server
Building A devices ג€” SSH server top left, workstations on all 5 on the right, laptop on bottom left
DataCenter devices ג€” DNS server.
Which of the following is used to prioritize Internet usage per application and per user on the network?
A. Bandwidth management
B. Load balance routing
C. Border Gateway Protocol
D. Administrative distance
Which of the following is used to prioritize Internet usage per application and per user on the network?
A. Bandwidth management
A network administrator needs to query the NSs for a remote application. Which of the following commands would BEST help the administrator accomplish this task?
A. dig
B. arp
C. show interface
D. hostname
A network administrator needs to query the NSs for a remote application. Which of the following commands would BEST help the administrator accomplish this task?
A. dig
Which of the following would MOST likely be used to review previous upgrades to a system?
A. Business continuity plan
B. Change management
C. System life cycle
D. Standard operating procedures
Which of the following would MOST likely be used to review previous upgrades to a system?
B. Change management
A technician is deploying a new switch model and would like to add it to the existing network monitoring software. The technician wants to know what metrics can be gathered from a given switch. Which of the following should the technician utilize for the switch?
A. MIB
B. Trap
C. Syslog
D. Audit log
A technician is deploying a new switch model and would like to add it to the existing network monitoring software. The technician wants to know what metrics can be gathered from a given switch. Which of the following should the technician utilize for the switch?
A. MIB
A network device is configured to send critical events to a syslog server; however, the following alerts are not being received:
Severity 5 LINK-UPDOWN: Interface 1/1, changed state to down
Severity 5 LINK-UPDOWN: Interface 1/3, changed state to down
Which of the following describes the reason why the events are not being received?
A. The network device is not configured to log that level to the syslog server
B. The network device was down and could not send the event
C. The syslog server is not compatible with the network device
D. The syslog server did not have the correct MIB loaded to receive the message
A network device is configured to send critical events to a syslog server; however, the following alerts are not being received:
Severity 5 LINK-UPDOWN: Interface 1/1, changed state to down
Severity 5 LINK-UPDOWN: Interface 1/3, changed state to down
Which of the following describes the reason why the events are not being received?
A. The network device is not configured to log that level to the syslog server
A network administrator is implementing OSPF on all of a company’s network devices. Which of the following will MOST likely replace all the company’s hubs?
A. A Layer 3 switch
B. A proxy server
C. A NGFW
D. A WLAN controller
A network administrator is implementing OSPF on all of a company’s network devices. Which of the following will MOST likely replace all the company’s hubs?
A. A Layer 3 switch
A network administrator discovers that users in an adjacent building are connecting to the company’s guest wireless network to download inappropriate material.
Which of the following can the administrator do to MOST easily mitigate this issue?
A. Reduce the wireless power levels
B. Adjust the wireless channels
C. Enable wireless client isolation
D. Enable wireless port security
A network administrator discovers that users in an adjacent building are connecting to the company’s guest wireless network to download inappropriate material.
Which of the following can the administrator do to MOST easily mitigate this issue?
A. Reduce the wireless power levels
A network administrator is designing a new datacenter in a different region that will need to communicate to the old datacenter with a secure connection. Which of the following access methods would provide the BEST security for this new datacenter?
A. Virtual network computing
B. Secure Socket Shell
C. In-band connection
D. Site-to-site VPN
A network administrator is designing a new datacenter in a different region that will need to communicate to the old datacenter with a secure connection. Which of the following access methods would provide the BEST security for this new datacenter?
D. Site-to-site VPN
An attacker is attempting to find the password to a network by inputting common words and phrases in plaintext to the password prompt. Which of the following attack types BEST describes this action?
A. Pass-the-hash attack
B. Rainbow table attack
C. Brute-force attack
D. Dictionary attack
An attacker is attempting to find the password to a network by inputting common words and phrases in plaintext to the password prompt. Which of the following attack types BEST describes this action?
D. Dictionary attack
Which of the following technologies provides a failover mechanism for the default gateway?
A. FHRP
B. LACP
C. OSPF
D. STP
Which of the following technologies provides a failover mechanism for the default gateway?
A. FHRP
The following configuration is applied to a DHCP server connected to a VPN concentrator:
There are 300 non-concurrent sales representatives who log in for one hour a day to upload reports, and 252 of these representatives are able to connect to the
VPN without any Issues. The remaining sales representatives cannot connect to the VPN over the course of the day. Which of the following can be done to resolve the issue without utilizing additional resources?
A. Decrease the lease duration
B. Reboot the DHCP server
C. Install a new VPN concentrator
D. Configure a new router
The following configuration is applied to a DHCP server connected to a VPN concentrator:
There are 300 non-concurrent sales representatives who log in for one hour a day to upload reports, and 252 of these representatives are able to connect to the
VPN without any Issues. The remaining sales representatives cannot connect to the VPN over the course of the day. Which of the following can be done to resolve the issue without utilizing additional resources?
A. Decrease the lease duration
A technician needs to configure a Linux computer for network monitoring. The technician has the following information:
Linux computer details:
Switch mirror port details:
After connecting the Linux computer to the mirror port on the switch, which of the following commands should the technician run on the Linux computer?
A. ifconfig ecth0 promisc
B. ifconfig eth1 up
C. ifconfig eth0 10.1.2.3
D. ifconfig eth1 hw ether A1:B2:C3:D4:E5:F6
A technician needs to configure a Linux computer for network monitoring. The technician has the following information:
Linux computer details:
Switch mirror port details:
After connecting the Linux computer to the mirror port on the switch, which of the following commands should the technician run on the Linux computer?
A. ifconfig ecth0 promisc
A network engineer is investigating reports of poor network performance. Upon reviewing a device configuration, the engineer finds that duplex settings are mismatched on both ends. Which of the following would be the MOST likely result of this finding?
A. Increased CRC errors
B. Increased giants and runts
C. Increased switching loops
D. Increased device temperature
A network engineer is investigating reports of poor network performance. Upon reviewing a device configuration, the engineer finds that duplex settings are mismatched on both ends. Which of the following would be the MOST likely result of this finding?
A. Increased CRC errors
Which of the following devices would be used to manage a corporate WLAN?
A. A wireless NAS
B. A wireless bridge
C. A wireless router
D. A wireless controller
Which of the following devices would be used to manage a corporate WLAN?
D. A wireless controller
Which of the following types of devices can provide content filtering and threat protection, and manage multiple IPSec site-to-site connections?
A. Layer 3 switch
B. VPN headend
C. Next-generation firewall
D. Proxy server
E. Intrusion prevention
Which of the following types of devices can provide content filtering and threat protection, and manage multiple IPSec site-to-site connections?
C. Next-generation firewall
An engineer notices some late collisions on a half-duplex link. The engineer verifies that the devices on both ends of the connection are configured for half duplex.
Which of the following is the MOST likely cause of this issue?
A. The link is improperly terminated
B. One of the devices is misconfigured
C. The cable length is excessive
D. One of the devices has a hardware issue
An engineer notices some late collisions on a half-duplex link. The engineer verifies that the devices on both ends of the connection are configured for half duplex.
Which of the following is the MOST likely cause of this issue?
C. The cable length is excessive
A network administrator is configuring a load balancer for two systems. Which of the following must the administrator configure to ensure connectivity during a failover?
A. VIP
B. NAT
C. APIPA
D. IPv6 tunneling
E. Broadcast IP
A network administrator is configuring a load balancer for two systems. Which of the following must the administrator configure to ensure connectivity during a failover?
A. VIP
A technician is troubleshooting a wireless connectivity issue in a small office located in a high-rise building. Several APs are mounted in this office. The users report that the network connections frequently disconnect and reconnect throughout the day. Which of the following is the MOST likely cause of this issue?
A. The AP association time is set too low
B. EIRP needs to be boosted
C. Channel overlap is occurring
D. The RSSI is misreported
A technician is troubleshooting a wireless connectivity issue in a small office located in a high-rise building. Several APs are mounted in this office. The users report that the network connections frequently disconnect and reconnect throughout the day. Which of the following is the MOST likely cause of this issue?
C. Channel overlap is occurring
A network engineer configured new firewalls with the correct configuration to be deployed to each remote branch. Unneeded services were disabled, and all firewall rules were applied successfully. Which of the following should the network engineer perform NEXT to ensure all the firewalls are hardened successfully?
A. Ensure an implicit permit rule is enabled
B. Configure the log settings on the firewalls to the central syslog server
C. Update the firewalls with current firmware and software
D. Use the same complex passwords on all firewalls
A network engineer configured new firewalls with the correct configuration to be deployed to each remote branch. Unneeded services were disabled, and all firewall rules were applied successfully. Which of the following should the network engineer perform NEXT to ensure all the firewalls are hardened successfully?
C. Update the firewalls with current firmware and software
At which of the following OSI model layers would a technician find an IP header?
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
At which of the following OSI model layers would a technician find an IP header?
C. Layer 3
An engineer is configuring redundant network links between switches. Which of the following should the engineer enable to prevent network stability issues?
A. 802.1Q
B. STP
C. Flow control
D. CSMA/CD
An engineer is configuring redundant network links between switches. Which of the following should the engineer enable to prevent network stability issues?
B. STP
Several WIFI users are reporting the inability to connect to the network. WLAN users on the guest network are able to access all network resources without any performance issues. The following table summarizes the findings after a site survey of the area in question:
Which of the following should a wireless technician do NEXT to troubleshoot this issue?
A. Reconfigure the channels to reduce overlap
B. Replace the omni antennas with directional antennas
C. Update the SSIDs on all the APs
D. Decrease power in AP 3 and AP 4
Several WIFI users are reporting the inability to connect to the network. WLAN users on the guest network are able to access all network resources without any performance issues. The following table summarizes the findings after a site survey of the area in question:
Which of the following should a wireless technician do NEXT to troubleshoot this issue?
A. Reconfigure the channels to reduce overlap
Which of the following routing protocols is used to exchange route information between public autonomous systems?
A. OSPF
B. BGP
C. EIGRP
D. RIP
Which of the following routing protocols is used to exchange route information between public autonomous systems?
B. BGP
A fiber link connecting two campus networks is broken. Which of the following tools should an engineer use to detect the exact break point of the fiber link?
A. OTDR
B. Tone generator
C. Fusion splicer
D. Cable tester
E. PoE injector
A fiber link connecting two campus networks is broken. Which of the following tools should an engineer use to detect the exact break point of the fiber link?
A. OTDR
r
Which of the following can be used to centrally manage credentials for various types of administrative privileges on configured network devices?
A. SSO
B. TACACS+
C. Zero Trust
D. Separation of duties
E. Multifactor authentication
Which of the following can be used to centrally manage credentials for various types of administrative privileges on configured network devices?
B. TACACS+
A network technician is installing new software on a Windows-based server in a different geographical location. Which of the following would be BEST for the technician to use to perform this task?
A. RDP
B. SSH
C. FTP
D. DNS
A network technician is installing new software on a Windows-based server in a different geographical location. Which of the following would be BEST for the technician to use to perform this task?
A. RDP
Branch users are experiencing issues with videoconferencing. Which of the following will the company MOST likely configure to improve performance for these applications?
A. Link Aggregation Control Protocol
B. Dynamic routing
C. Quality of service
D. Network load balancer
E. Static IP addresses
Branch users are experiencing issues with videoconferencing. Which of the following will the company MOST likely configure to improve performance for these applications?
C. Quality of service
A technician is assisting a user who cannot connect to a network resource. The technician first checks for a link light. According to troubleshooting methodology, this is an example of:
A. using a bottom-to-top approach.
B. establishing a plan of action.
C. documenting a finding.
D. questioning the obvious.
A technician is assisting a user who cannot connect to a network resource. The technician first checks for a link light. According to troubleshooting methodology, this is an example of:
D. questioning the obvious.
Which of the following transceiver types can support up to 40Gbps?
A. SFP+
B. QSFP+
C. QSFP
D. SFP
Which of the following transceiver types can support up to 40Gbps?
B. QSFP+
Which of the following TCP ports is used by the Windows OS for file sharing?
A. 53
B. 389
C. 445
D. 1433
Which of the following TCP ports is used by the Windows OS for file sharing?
C. 445
A network administrator redesigned the positioning of the APs to create adjacent areas of wireless coverage. After project validation, some users still report poor connectivity when their devices maintain an association to a distanced AP. Which of the following should the network administrator check FIRST?
A. Validate the roaming settings on the APs and WLAN clients
B. Verify that the AP antenna type is correct for the new layout
C. Check to see if MU-MIMO was properly activated on the APs
D. Deactivate the 2.4GHz band on the APS
A network administrator redesigned the positioning of the APs to create adjacent areas of wireless coverage. After project validation, some users still report poor connectivity when their devices maintain an association to a distanced AP. Which of the following should the network administrator check FIRST?
A. Validate the roaming settings on the APs and WLAN clients
Which of the following connector types would have the MOST flexibility?
A. SFP
B. BNC
C. LC
D. RJ45
Which of the following connector types would have the MOST flexibility?
A. SFP
Which of the following ports is commonly used by VoIP phones?
A. 20
B. 143
C. 445
D. 5060
Which of the following ports is commonly used by VoIP phones?
D. 5060
A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available. Which of the following would be MOST affected by this statistic?
A. A VoIP sales call with a customer
B. An in-office video call with a coworker
C. Routing table from the ISP
D. Firewall CPU processing time
A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available. Which of the following would be MOST affected by this statistic?
A. A VoIP sales call with a customer
A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter. Which of the following ports should be blocked when checking firewall configuration?
A. 22
B. 23
C. 80
D. 3389
E. 8080
A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter. Which of the following ports should be blocked when checking firewall configuration?
B. 23
A technician is writing documentation regarding a company’s server farm. The technician needs to confirm the server name for all Linux servers. Which of the following commands should the technician run?
A. ipconfig
B. nslookup
C. arp
D. route
A technician is writing documentation regarding a company’s server farm. The technician needs to confirm the server name for all Linux servers. Which of the following commands should the technician run?
B. nslookup
A technician is connecting multiple switches to create a large network for a new office. The switches are unmanaged Layer 2 switches with multiple connections between each pair. The network is experiencing an extreme amount of latency. Which of the following is MOST likely occurring?
A. Ethernet collisions
B. A DDoS attack
C. A broadcast storm
D. Routing loops
A technician is connecting multiple switches to create a large network for a new office. The switches are unmanaged Layer 2 switches with multiple connections between each pair. The network is experiencing an extreme amount of latency. Which of the following is MOST likely occurring?
C. A broadcast storm
