Network+ Pretest 1: 1/3

It is 3 am on a Saturday and you just received a call from a system administrator that reports multiple network outages across the office network. It is snowing heavily outside and the roads are inaccessible for you to get to the building to check the configuration of the network devices. What technology should you use to connect to the network from your home office in order to troubleshoot the network outages?

• HTTP

• Telnet

• SNMP

• SSH

Your company has two office buildings which are connected via copper network cable that is buried underground. There is some construction being performed near the buildings. Now, the second building discovers they have suffered a network outage that doesn't appear to be temporary. What is the MOST likely cause of the outage?

• Cross-talk on the cable

• An open circuit has been created

• ​Electromagnetic interference on the cable

• Signal attenuation on the cable

Mark is setting up a DHCP server on a segment of the corporate LAN. Which of the following options is NOT required in the DHCP scope in order to allow hosts on that LAN segment to be assigned a dynamic IP addresses and to still be able to access the Internet and internal company servers?

• Default gateway

• Reservations

• ​DNS servers

• Subnet mask

A technician added memory to a router, but that memory is never recognized by the router. The router is then powered down, and the technician relocates all of the memory to different modules. On startup, the router does not boot and displays memory errors. Which of the following is the MOST likely cause of this issue?

• VTP

• Driver update

• ESD

• Halon particles

A company owns four kiosks that are in close proximity within a shopping center. The owner is concerned about someone accessing the Internet via the kiosk's wireless network. What should be implemented to provide wireless access only to the employees working at the kiosk?

• Firewall

• Web filtering

• MAC filtering

• Host-based antivirus

What is the correct CIDR notation for the Sales department's subnet which requires 55 devices?

• /25

• /26

• /27

• /28

What type of cable would you use to connect a computer to a switch?

• Crossover

• RG-6

• Rollover

• RS-232

• Straight-through

What does this mean: PING: 13.... DOWNLOAD 99.79...UPLOAD 116.61?

• The user's PC downloaded 99.79 MB of data from the website and uploaded 116.61 MB of data to the website.

• The user's PC is downloading information faster than it uploads because it has an asynchronous connection

• ​The user's PC is receiving data at 99.79 Mbps and sending data to the server at 116.61 Mbps

• The SpeedTest website is downloading data to its server at 99.79 Mbps and uploading data from its server at 116.61 Mbps.

A technician has installed an 802.11n network and most users are able to see speeds of up to 300Mbps. There are few users who have an 802.11n network card but are unable to get speeds higher than 108Mbps. What should the technician do to fix the issue?

• ​Upgrade the OS version to 64-bit

• Roll back the firmware on WLAN card

• ​Install a vulnerability patch

• ​Upgrade the WLAN card driver

A malicious user is blocking mobile devices from connecting to the Internet when other people are in the coffee shop. What is the malicious user implementing?

• Removing AP from classroom

• ACL

• Jamming

• Firewall

• IPS