CompTIA A+ Practice Tests. Docter Quentin

through the firewall. Which option does he need to configure to manage these settings?

      A. Port forwarding

      B. Port triggering

      C. NAT

      D. QoS

      230 You are asked to perform consulting work for a medium-sized company that is having network connectivity issues. When you examine the patch panel, you notice that none of the dozens of UTP cables are labeled. Which tool can you use to identify which cable goes to which workstation?

      A. Cable tester

      B. Loopback plug

      C. Punchdown tool

      D. Tone generator and probe

      231 Which TCP/IP protocol is responsible for dynamically assigning IP addresses to client computers?

      A. DNS

      B. DHCP

      C. RDP

      D. LDAP

      232 What characteristic differentiates STP from UTP?

      A. It uses RJ-45s connectors instead of RJ-45.

      B. It follows the T568A wiring standard.

      C. It does not produce poisonous gas when burned.

      D. It has a layer of foil shielding.

      233 You are investigating remnants of an old network setup in an unused building. At the end of a conduit, all you see are the connectors shown here. What type of cable do you expect these connectors to be attached to?

      A. Coaxial

      B. STP

      C. UTP

      D. Fiber-optic

      234 Which networking device works at Layer 2 of the OSI model, has multiple ports in which each is its own collision domain, and examines the header of the incoming packet to determine which port it gets sent to?

      A. Hub

      B. Switch

      C. Bridge

      D. Router

      235 Which TCP/IP port number will an email client use to push email to its email server?

      A. 23

      B. 25

      C. 110

      D. 143

      236 A technician is going to set up a Wi-Fi network using standard omnidirectional antennae. Because of the building configuration, transmitting signals for the greatest distance is his primary criterion. Which standard should he choose?

      A. 802.11a

      B. 802.11g

      C. 802.11n

      D. 802.11ac

      237 You are troubleshooting an intermittently failing CAT7 network connection. You suspect that there is a short in the connection. Which tool can you use to determine this?

      A. Tone generator and probe

      B. Loopback plug

      C. Multimeter

      D. Crimper

      238 Which TCP/IP protocol gathers and manages network performance information using devices called agents?

      A. SNMP

      B. SMTP

      C. LDAP

      D. SMB

      239 Which Internet connection type, popular for home use, offers asymmetrical download and upload speeds and is implemented over common phone lines?

      A. POTS

      B. Cable

      C. DSL

      D. ISDN

      240 Which Wi-Fi encryption standard was the first to include the use of a 128-bit dynamic per-packet encryption key?

      A. WEP

      B. WPA

      C. WPA2

      D. AES

      241 You are installing an 802.11n Wi-Fi network with five wireless access points. The access points are set up so their ranges overlap each other. To avoid communications issues, what principle should you follow when configuring them?

      A. Configure all access points to use the same channel.

      B. Configure all access points to use adjacent channels.

      C. Configure all access points to use non-overlapping channels.

      D. Channel configuration will not cause communications issues.

      242 Which TCP/IP protocol is designed to send email from clients to mail servers?

      A. SMTP

      B. POP3

      C. IMAP

      D. SMB

      243 You are setting up a small network in your neighbor’s house. She is concerned about wireless security, so she doesn’t want to use wireless networking at all. She needs to connect two computers to each other, but it will be impossible to run a network cable between them. Which technology can help her network these computers?

      A. Ethernet over Power

      B. Power over Ethernet

      C. Firewall

      D. Access point

      244 You have been asked to install a Wi-Fi network in a building that is approximately 100 meters long and 25 meters wide. Because of cost considerations, you will need to use 802.11g. At a minimum, how many wireless access points will you need?