2.0 Networking (Exam Objectives)

*A user's computer is not receiving a network connection. The technician confirms that the connection seems to be down and looks for the user's port on the patch panel. The port and patch panel are not labeled. Which of the following network tools should the technician use to identify the port?

• A. Network tap

• B. Punchdown tool

• C. Toner probe

• D. Crimper

A technician is receiving reports that the entire office sporadically loses network connectivity throughout the day. The technician determines the root cause to be

EMI. Which of the following cable mediums would be the MOST cost effective without sacrificing system performance?

• A. Coaxial

• B. Shielded Cat 6

• C. Plenum Cat 5e

• D. Multimode fiber

A user on a SOHO network is unable to watch online videos, even at 240 pixels. The technician runs ipconfig from the user's computer and records the following:

Connection-specific DNS Suffix.: lan

Link-local IPV6 Address.........: fe80::1585:7fb2:b05f:7102%12

IPv4 Address....................: 192.168.1.131

Subnet Mask.....................: 255.255.255.0

Default Gateway.................: 192.168.1.1

The technician then connects a test laptop to the router via the user's Cat 5 cable and records the following information:

Download: 85 mbps -

Upload: 22 mbps -

Ping: 28 ms -

Which of the following is MOST likely causing the user's issue?

• A. Incorrect IP address

• B. Faulty NIC

• C. Misconfigured default gateway

• D. Bad network cable

Answer explanation

SOHO Network

A small o􀀂ce has a wireless network with several access points for roaming laptop use. Users occasionally report that the wireless connection drops or becomes very slow. Users have confirmed that this issue only happens when connected to the office wireless network. Which of the following would MOST likely be the cause?

• A. Hidden SSID

• B. Device interference

• C. Ethernet port- flapping

• D. High ISP latency

A network administrator was notified that laptop users are unable to access or ping any network resources on the corporate network. Which of the following should the network administrator check FIRST?

• A. DHCP

• B. AAA

• C. DNS

• D. ARP

A field technician has been dispatched to a site with an internet outage. Upon arriving, the technician discovers that the POTS lines are not working as well. Which of the following technologies is the site MOST likely using?

• A. Fiber

• B. Cable

• C. DSL

• D. Satellite

*Which of the following options provides correct information about 2.4GHz and 5GHz wireless frequencies? (Choose two.)

• A. 2.4GHz has less interference. 5GHz transmits in lower speed.

• B. 2.4GHz penetrates solid objects more effectively. 5GHz provides faster data connections.

• C. 2.4GHz has a higher data rate. 5GHz has 23 channels.

  D. 2.4GHz has 11 channels. 5GHz has no data interference.

• E. 2.4GHz has a higher coverage area. 5GHz has higher bandwidth.

• F. 2.4GHz has a higher bandwidth. 5GHz has lower transmit power.

**A technician receives a ticket that states a mobile payment device is having issues with its contactless payment feature. The device is not detecting payment options. Which of the following is the MOST likely cause of the issue?

• A. NFC

• B. Bluetooth

• C. Wi-Fi

• D. Lightning adapter

Answer explanation

2.3 protocols for wireless networking - Lesson 4D

A user calls the help desk for assistance configuring an Android phone with a new NFC-enabled speaker that will be used for an upcoming conference call. The user was unable to direct the phone's audio to the NFC speaker. Which of the following sequences should the help desk technician walk the customer through to accomplish this task?

• A. Enable NFC on the speaker. Ensure the speaker is less than 33ft (10m) from the Android phone. On the phone's Bluetooth settings menu for Connected Devices, select Pair New Device. Tap to accept the connection to the speaker when the prompt is displayed on the phone's screen.

• B. Enable NFC and Bluetooth on the Android phone. From the Android phone's Bluetooth settings menu for Connected Devices, select the Previously Connected Devices option. Select a listed device that most closely matches the speaker. Tap to accept the connection to the speaker when the prompt is displayed on the phone's screen.

• C. Enable NFC and Bluetooth on the Android phone. Tap and hold the Android phone to the spot on the speaker where the NFC logo is displayed. Accept the connection to the speaker when the prompt is displayed on the phone's screen.

• D. Enable Wi-Fi on the speaker. Enable Wi-Fi on the Android phone. Tap and hold the Android phone to the spot on the speaker where the NFC logo is displayed. Accept the connection to the speaker when the prompt is displayed on the phone's screen.

Which of the following 802.11 standards supports both 5GHz and 2.4GHz channel frequencies?

• A. 802.11a

• B. 802.11ac

• C. 802.11b

• D. 802.11g

Answer explanation

2.3 Compare and contrast protocols for wireless networking

Lesson 4D

802.11