Network+ Prep Quiz

Which of the following would be best suited for use at the access layer in a three-tier architecture system?

• Router

• Multiplayer Switch

• Layer 2 Switch

• Access point

Following the implementation of a BYOD policy, some users in a high-density environment report slowness over the wireless connection. Some
wireless controller reports indicate high latency and airtime contention. Which of the following is the most probable root cause?

• The AP is configured with 2.4GHz frequency, which the new personal devices do not support.

• The AP is configured with 2.4GHz frequency without band-steering capabilities.

• The AP is configured with 5Ghz frequency with band-steering capabilities.

• The AP is configured with 5Ghz frequency, which the new personal device do not support.

A company’s VoIP phone connection is cutting in and out. Which of the following should be configured to resolve this issue?

• 802.1Q tagging

• Jumbo frames

• Native VLAN

• Link aggregation

A network technician is configuring a wireless network that consists of multiple APs for better coverage and allows roaming between the APs. Which of the following types of SSIDs should the technician configure?

• Basic Service Set

• Independent Basic Service Set

• Extended Service Set

• Distribution System Service

A network engineer performed a migration to a new mail server. The engineer changed the MX record, verified the change was accurate, and confirmed the new mail server was reachable via the IP address in the A record. However, users are not receiving email. Which of the following should the engineer have done to prevent the issue from occurring?

• Change the email client configuration to match the MX record.

• Reduce the TTL record prior to the MX record change.

• Perform a DNS zone transfer prior to the MX record change.

• Update the NS record to reflect the IP address change.

Which of the following network topologies contains a direct connection between every node in the network?

• Mesh

• Hub-and-spoke

• Star

• Point-to-Point

Which of the following layers of the OSI model is responsible for end-to-end encryption?

• Presentation

• Application

• Session

• Transport

A company, which is located in a coastal town, retrofitted an office building for a new data center. The underground fiber optics were brought in and connected to the switches in the basement network MDF. A server data center was built on the fifth floor with the two rooms vertically connected by fiber optics. Which of the following types of environmental sensors is most needed?

• Temperature sensor in the network MOF

• Water sensor in the network MDF

• Temperature sensor in the data center

• Water sensor in the data center

A network administrator needs to monitor traffic on a specific port on a switch. Which of the following should the administrator configure to accomplish the task?

• Port security

• Port tagging

• Port mirroring

• Media access control

A company is designing a new complex. The primary and alternate data centers will be in separate buildings 6.2mi (10km) apart and will be connected via fiber. Which of the following types of SFP is the best choice?

• 10GBASE-SR

• 10000BASE-LX

• 10GBASE-LR

• 1000BASE-SX