Net+ Session 5 Post-lab follow-up Flashcards
A user calls the help desk stating that he/she cannot get on the Internet. What troubleshooting step should the help desk agent do first?
A - Identify the problem
B - Go visit the user’s desk
C - Establish a theory of probable cause
D - Establish a plan of action to resolve the problem
A - Identify the problem
A user calls the help desk and is complaining that the network speed on the machine has been very slow in the past few days. What is the best question to ask the user?
A - What did you install or change on the machine?
B - Did you install or change anything on the machine?
C - Has anything been installed or changed on the machine?
D - Ask the user nothing. Remote into the machine and look for the problem.
C - Has anything been installed or changed on the machine?
An executive vice-president cannot get an email message to send. Meanwhile, multiple customer service agents report that they cannot log into their service application. What would be the best way to approach this situation?
A - Work on both at the same time
B - Work on neither and escalate both issues
C - Work on one problem as it could fix the other problem
D - Work on the vice-president’s problem and ignore the customer service agents
C - Work on one problem as it could fix the other problem
A printer was working but now it is not. A help desk technician cannot ping the printer. What would be the most obvious thing to check?
A - If the printer is on
B - If the printer has an IP address
C - If the printer has a static IP address
D - If the printer has a static IP address but someone changed it
A - If the printer is on
A department has moved to a new building. Upon attempting to connect machines to the network, many users in many areas of the building are unable to connect to the network. A supervisor sends a team member to each area to check on ports. What troubleshooting method is this? A - Divide and conquer B - Question the obvious C - Bottom-to-top OSI model D - Top-to-bottom OSI model
A - Divide and conquer
For a network problem, a theory of probable cause has been established. What is the next step in troubleshooting?
A - Test the theory
B - Document findings
C - Establish a plan of action
D - Implement a solution or escalate it as necessary
A - Test the theory
In the order of troubleshooting a network problem, a technician was unable to confirm a theory. The technician can establish a new theory or do what? A - Document findings B - Escalate the problem C - Determine next steps D - Implement preventative measures
B - Escalate the problem
A network technician has determined a switch is faulty and needs to be replaced. What troubleshooting step should the technician do next?
A - Document findings
B - Escalate the problem
C - Implement the solution
D - Establish a plan of action to resolve the problem
D - Establish a plan of action to resolve the problem
A junior administrator realized during troubleshooting a network connection that a faulty cable was the cause. The junior administrator has replaced the cable. What should the junior administrator do next?
A - Verify the cable works
B - Escalate this to the supervisor
C - Document that the cable has been replaced
D - Identify potential effects of replacing the cable
A - Verify the cable works
A help desk associate has reset a user’s password. What should the help desk person do as a final step in resolving this issue?
A - Close the ticket
B - Verify the user can log in
C - Document how the problem was resolved
D - Document every step in the process and every conversation with the user
C - Document how the problem was resolved
A junior administrator needs to locate a DNS server for a local network. Which command will the junior administrator run to locate the server? A - netstat B - ipconfig C - nslookup D - dnslookup
C - nslookup
If a default gateway is incorrectly set on a machine, what will happen?
A - The machine will not be able to print
B - The machine will not be able to reach a DNS server
C - The machine will not be able to get onto the Internet
D - The machine will not see any other machines on the network
C - The machine will not be able to get onto the Internet
Which are legitimate loopback addresses? Choose two. A - ::1 B - 127.0.0.1 C - 169.254.22.24 D - FEC0::2342:a325
A - ::1
B - 127.0.0.1
Which command-line tool will display the NetBIOS name and MAC address of a machine named ss-vmm? A - nbtstat -a ss-wmm B - netstat -a ss-wmm C - nbtstat -A ss-wmm D - netstat -A ss-wmm
A - nbtstat -a ss-wmm
A large industrial building has a single wireless access point. To get better wireless coverage for the network, what should be added? A - Hub B - Router C - Switch D - Repeater
D - Repeater
Of the following obstructions, which one typically causes the most interference in a wireless network? A - Birds B - People C - Windows D - Fountains
D - Fountains
What formula comprises signal-to-noise ratio in wireless networks?
A - Absolute of noise floor in decibels divided by absolute of decibels of received signals
B - Absolute of noise floor in decibels minus absolute of decibels of received signals
C - Absolute of decibels of received signals minus absolute of noise floor in decibels
D - Absolute of decibels of received signals divided by absolute of noise floor in decibels
B - Absolute of noise floor in decibels minus absolute of decibels of received signals
A junior network technician, in response to a network analyzer indicating a huge saturation of access points on channel 6, changes the channel of a wireless access point to channel 11. Now, no one can connect to the wireless access point. What problem has been caused here? A - Channel saturation B - Overlapping channels C - Mismatched channels D - Mismatched frequencies
C - Mismatched channels
In a wireless network connected to an ISP, many of the users on the network are downloading and streaming large files. What effect can this cause on the wireless network? A - Bottleneck B - Device saturation C - Increased baseline D - Bandwidth saturation
D - Bandwidth saturation
A business wants to upgrade its wireless access points. What would be the best first step to perform the upgrade?
A - Replace each access point one at a time
B - Test the new devices in the production environment
C - Test the new devices in the nonproduction environment
D - Add the access points to the production network while leaving the old ones in place until the new access points have been verified to work
C - Test the new devices in the nonproduction environment
A network administrator is trying to make sure a signal for a wireless access point is not transmitted outside of a building. What setting on the access point can be adjusted to accomplish this? A - SSID B - Power C - Standard D - Encryption
B - Power
What would be an effective way to avoid an open network for a SOHO wireless network? A - Enable SSID B - MAC filtering C - Disable SSID D - WPA2 encryption
B - MAC filtering
A wireless access point is running 802.11n at 2.4 GHz. A device with an 802.11ac wireless adapter cannot connect to the wireless access point. Other devices on the network can connect to the access point without fail. What should a technician check first for troubleshooting?
A - If the device in question is using the correct SSID
B - If the access point has the 5 GHz band turned off
C - If the device in question is using encryption that is the same as the access point
D - If any other devices are trying to connect or can connect with an 802.11ac adapter
B - If the access point has the 5 GHz band turned off
To try to improve a wireless signal, what should the signal be bounced off of? A - Metal stud B - Window film C - Concrete wall D - Reflective surface
D - Reflective surface
A network administrator has used MIMO to set up a wireless network. Recently, the performance of the network is about half of what it once was. What is the most likely issue here?
A - A router stopped working
B - A switch stopped working
C - An antenna stopped working
D - A wireless access point stopped working
C - An antenna stopped working
What, when added to a window, can impede a wireless signal? A - Film B - Blinds C - Shades D - Caulking
A - Film
What types of studs in a wall can cause interference in a wireless network? A - Metal B - Wood C - Corner D - Trimmer
A - Metal
What is the role of LWAPP in wireless networks?
A - To allow signals to bounce
B - To create thick access points
C - To configure and monitor multiple access points
D - To allow access points to stream to multiple clients at once
C - To configure and monitor multiple access points
What is true about thin and thick wireless access points?
A - Thick wireless access points never perform the DHCP role
B - Thick wireless access points rely on LWAPP for authentication and configuration
C - Thin wireless access points are not dependent on another device for tasks such as authentication and configuration
D - Thick wireless access points are not dependent on another device for tasks such as authentication and configuration
D - Thick wireless access points are not dependent on another device for tasks such as authentication and configuration
A junior network administrator replaced the current wireless access point with an 802.11ac wireless access point. Now, users with older laptops say they cannot connect to the wireless access point even though the SSID and password are the same. What is the most likely cause of the problem?
A - The signal strength needs to be adjusted
B - The channel setting needs to be adjusted
C - The standard setting needs to be adjusted
D - The previous access point was an 802.11n access point
D - The previous access point was an 802.11n access point
Several users are connected to an 802.11n wireless network. They all use 802.11n adapters and the wireless network is in an open-cubicle type building with no microwaves nearby. Several users are complaining about slow speeds. What is the most likely cause of this issue?
A - The users with slower speeds are on the wrong channel
B - The users with slower speeds are on a different frequency than the other users
C - The users with slower speeds are further away from the access point than others
D - The users with slower speeds are streaming video in addition to doing their normal work
C - The users with slower speeds are further away from the access point than others
Where can a technician go to easily measure the speed of an Internet connection? A - Speed test site B - Network monitor C - Looking glass site D - Performance monitor
A - Speed test site
What type of site can allow a user to view routing information from a server's perspective? A - Speed test site B - Routing test site C - Looking glass site D - Border gateway site
C - Looking glass site
What type of network analysis tool is best used to monitor incoming ping attempts? A - Port scanner B - Packet analyzer C - Protocol analyzer D - Wireless analyzer
C - Protocol analyzer