Networking 3
A network administrator needs to change where the outside DNS records are hosted. Which of the following records should the administrator change at the registrar to accomplish this task?
NS
A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modem has a signal power of -97dB. Which of the following should the support agent recommend to troubleshoot the issue?
Removing any splitters connected to the line
Which of the following does OSPF use to communicate routing updates?
Multicast
A storage network requires reduced overhead and increased efficiency for the amount of data being sent. Which of the following should an engineer most likely configure to meet these requirements?
Jumbo frames
A security administrator is creating a new firewall object for a device with IP address 192.168.100.1/25. However, the firewall software only uses dotted decimal notation in configuration fields. Which of the following is the correct subnet mask to use?
255.255.255.128
Which of the following disaster recovery metrics describes the average length of time a piece of equipment can be expected to operate normally?
MTBF
A network administrator logs on to a router and sees an interface with an IP address of 10.61.52.34 255.255.255.252. Which of the following best describes how this interface IP address is being used?
As a point-to-point connection
A network technician is troubleshooting a faulty NIC and tests the theory. Which of the following should the technician do next?
Establish a plan of action.
A network administrator is configuring access points for installation in a dense environment where coverage is often overlapping. Which of the following channel widths should the administrator choose to help minimize interference in the 2.4GHz spectrum?
20MHz
A network manager wants to view network traffic for devices connected to a switch. A network engineer connects an appliance to a free port on the switch and needs to configure the switch port connected to the appliance. Which of the following is the best option for the engineer to enable?
Port mirroring
A network administrator is in the process of installing 35 PoE security cameras. After the administrator installed and tested the new cables, the administrator installed the cameras. However, a small number of the cameras do not work. Which of the following is the most likely reason?
Power budget exceeded
A network administrator is troubleshooting an application issue after a firewall change. The administrator has confirmed that the port and
protocol are accessible to the user, but the application is still having issues. Which of the following tools allows the administrator to look at traffic on the application layer of the OSI model?
tcpdump
Which of the following ports should a network administrator enable for encrypted log-in to a network switch?
22
Which of the following is used to stage copies of a website closer to geographically dispersed users?
CDN
Which of the following appliances provides users with an extended footprint that allows connections from multiple devices within a designated WLAN?
Access point
An administrator is configuring a switch that will be placed in an area of the office that is accessible to customers. Which of the following is the best way for the administrator to mitigate unknown devices from connecting to the network?
802.1X
Which of the following diagrams would most likely include specifications about fiber connector types?
Physical
Which of the following is the most likely reason an insurance brokerage would enforce VPN usage?
To encrypt sensitive data in transit
An organization moved its DNS servers to new IP addresses. After this move, customers are no longer able to access the organization's website. Which of the following DNS entries should be updated?
NS
Which of the following are environmental factors that should be considered when installing equipment in a building? (Choose two.)
Fire suppression system, Humidity control
A customer lost the connection to the telephone system. The administration console is configured with multiple network interfaces and is
connected to multiple switches. The network administrator troubleshoots and verifies the following: The support team is able to connect remotely to the administration console. Rebooting the switch shows solid link and activity lights even on unused ports. Rebooting the telephone system does not bring the system back online. The console is able to connect directly to individual modules successfully.
Which of the following is the most likely reason the customer lost the connection?
A switch failed.
A systems administrator is configuring a new device to be added to the network. The administrator is planning to perform device hardening prior to connecting the device. Which of the following should the administrator do first?
Change the default admin passwords.
A network administrator needs to connect two network closets that are 492ft (150m) away from each other. Which of the following cable types should the administrator install between the closets?
Single-mode fiber
An IT manager needs to connect ten sites in a mesh network. Each needs to be secured with reduced provisioning time. Which of the following technologies will best meet this requirement?
SD-WAN
Which of the following is most likely responsible for the security and handling of personal data in Europe?
GDPR