CompTIA Network+ Question B-81

The network administrator is configuring a switch port for a file server with a dual NIC. The file server needs to be configured for redundancy and both ports on the NIC need to be combined for maximum throughput. Which of the following features on the switch should the network administrator use?

A. BPDU
B. LACP
C. Spanning tree
D. Load balancing

Correct Answer: B

CompTIA Network+ Question B-80

Which of the following cloud infrastructure designs includes on premise servers utilizing a centralized syslog server that is hosted at a third party organization for review?

A. Hybrid
B. Public
C. Community
D. Private

Correct Answer: A

CompTIA Network+ Question B-79

A technician is configuring a computer lab at a school. The computers need to be able to communicate with each other, but students using the computers should not be able to access the internet. Which of the following rules on the firewall should the technician configure for the lab computers?

A. Block all LAN to LAN traffic
B. Block all LAN to WAN traffic
C. Block all WAN to LAN traffic
D. Block all WLAN to WAN traffic

Correct Answer: C

CompTIA Network+ Question B-78

Which of the following would be the result of a user physically unplugging a VoIP phone and connecting it into another interface with switch port security enabled as the default setting?

A. The VoIP phone would request a new phone number from the unified communications server.
B. The VoIP phone would cause the switch interface, that the user plugged into, to shutdown.
C. The VoIP phone would be able to receive incoming calls but will not be able to make outgoing calls.
D. The VoIP phone would request a different configuration from the unified communications server.

Correct Answer: B

Explanation:
Without configuring any other specific parameters, the switchport security feature will only permit one MAC address to be learned per switchport (dynamically) and use the shutdown violation mode; this means that if a second MAC address is seen on the switchport the port will be shutdown and put into the err-disabled state.

CompTIA Network+ Question B-77

A desktop computer is connected to the network and receives an APIPA address but is unable to reach the VLAN gateway of 10.10.100.254. Other PCs in the VLAN subnet are able to reach the Internet. Which of the following is MOST likely the source of the problem?

A. 802.1q is not configured on the switch port
B. APIPA has been misconfigured on the VLAN
C. Bad SFP in the PC’s 10/100 NIC
D. OS updates have not been installed

Correct Answer: A

Explanation:
APIPA addresses are self-configured and are used when the client is unable to get proper IP configuration from a DHCP server. One possible source of this problem is that switch port, to which the computer is connected, is misconfigured. The 802.1q protocol is used to configure VLAN trunking on switch ports.

CompTIA Network+ Question B-76

A network technician is using a network monitoring system and notices that every device on a particular segment has lost connectivity. Which of the following should the network technician do NEXT?

A. Establish a theory of probable cause.
B. Document actions and findings.
C. Determine next steps to solve the problem.
D. Determine if anything has changed.

Correct Answer: D

Explanation:
The technician has already identified the symptom: Loss of connectivity on a specific network segment. The next step in identifying the problem is to “Determine if anything has changed”.
Common troubleshooting steps and procedures:
1. Identify the problem. Information gathering. Identify symptoms. Question users.
Determine if anything has changed.
2. Establish a theory of probable cause. Question the obvious.
3. Test the theory to determine cause:
When the theory is confirmed, determine the next steps to resolve the problem. If theory is not confirmed, re-establish a new theory or escalate.
4. Establish a plan of action to resolve the problem and identify potential effects.
5. Implement the solution or escalate as necessary.
6. Verify full system functionality and if applicable implement preventive measures.
7. Document findings, actions, and outcomes.

CompTIA Network+ Question B-75

A network technician is diligent about maintaining all system servers’ at the most current service pack level available. After performing upgrades, users experience issues with server-based applications. Which of the following should be used to prevent issues in the future?

A. Configure an automated patching server
B. Virtualize the servers and take daily snapshots
C. Configure a honeypot for application testing
D. Configure a test lab for updates

Correct Answer: D

Explanation:
To prevent the service pack issues make sure, before going ahead and applying a new Service Pack in your production environment, to validate them in a test/lab environment first.

CompTIA Network+ Question B-74

Which of the following is the number of broadcast domain that are created when using an unmanaged 12-port switch?

A. 0
B. 1
C. 2
D. 6
E. 12

Correct Answer: B

CompTIA Network+ Question B-73

A building is equipped with light sensors that turn off the fluorescent lights when natural light is above a certain brightness. Users report experiencing network connection issues only during certain hours. The west side of the building experiences connectivity issues in the morning hours and the east side near the end of the day. At night the connectivity issues affect the entire building. Which of the following could be the cause of the connectivity issues?

A. Light sensors are interfering with the network
B. EMI from the lights is interfering with the network cables
C. Network wiring is run perpendicular to electrical conduit
D. Temperature changes are causing attenuation in copper cabling

Correct Answer: C

CompTIA Network+ Question B-72

A network technician was tasked to respond to a compromised workstation. The technician documented the scene, took the machine offline, and left the PC under a cubicle overnight. Which of the following steps of incident handling has been incorrectly performed?

A. Document the scene
B. Forensics report
C. Evidence collection
D. Chain of custody

Correct Answer: D

Explanation:
To verify the integrity of data since a security incident occurred, you need to be able to show a chain of custody.
A chain of custody documents who has been in possession of the data (evidence) since a security breach occurred. A well-prepared organization will have process and procedures that are used when an incident occurs.
A plan should include first responders securing the area and then escalating to senior management and authorities when required by policy or law. The chain of custody also includes documentation of the scene, collection of evidence, and maintenance, e-discovery (which is the electronic aspect of identifying, collecting, and producing electronically stored information), transportation of data, forensics reporting, and a process to preserve all forms of evidence and data when litigation is expected. The preservation of the evidence, data, and details is referred to as legal hold.