IT Essentials v8 Chapter 5 Check Your Understanding Answers

1. Match the network type to the definition.

Explanation: Place the options in the following order:

A network that spans across a city. MAN
A LAN that wirelessly connects devices on the network. WLAN
Connects devices in close proximity to the user, usually using Bluetooth. PAN
Wireless APs connect together to extend the reach of a wireless network. WMN
Connects networks across large geographical distance, such as the internet. WAN
Allows users to securely connect to another network across unsecure networks VPN
Typically uses wire cable to connect devices to a switch in a small geographical area. LAN
Can extend beyond traditional LANs and group users based on administratively defined boundaries instead of physical boundaries. VLAN

2. Match internet connection type to the definition.

Explanation: Place the options in the following order:

A network that spans across a city. MAN
Technologies that use different frequencies to send multiple signals over the same medium. Broadband
Digital phone service that can also connect to the internet. DSL
A cell phone configured to allow other devices to connect via Wi-Fi. Mobile hotspot
An increasingly popular choice for internet connections to homes and businesses that uses light to transfer data. Fiber
A popular choice for rural markets that do not have a DSL or cable provider. Satellite
Uses coaxial cables to deliver a variety of content including TV channels, internet, and voice calls. Cable
Uses towers distributed throughout a user’s coverage area to provide seamless access to phone and internet services. Cellular
The process of connecting another device to a cell phone so that the connected device can access the internet. Tethering

3. Choose whether the following statements are true or false.

  • The transport layer has only one protocol, like the internet layer. – False
  • Some application layer protocols use only UDP. – True
  • Some application layer protocols can use both TCP and UDP. – True
  • Some application layer protocols use neither TCP nor UDP. – False

4. Which two statements apply to the Transport Layer protocols, TCP and UDP? (Choose two.)

  • TCP provides reliability and data acknowledgement.
  • TCP resends lost data and has low overhead.
  • UDP is fast and delivers data as it arrives.
  • UDP has low overhead and acknowledges packets received.
  • Both TCP and UDP use port numbers and are considered to be reliable.

Explanation: TCP provides reliability, data acknowledgement, and resends lost data. UDP is fast, delivers data as it arrives, and has low overhead. Both TCP and UDP use port numbers

5. Match application and ports to the Transport Layer protocol used.

port 20-FTP (data) TCP
port 21-FTP (control) TCP
port 22-SSH TCP
port 23-Telnet TCP
port 25-SMTP TCP
port 53-DNS Both
port 80-HTTP Both
port 67-DHCP (server) UDP
port 68-DHCP (client) UDP
port 69-TFTP UDP
port 110 – POP3 TCP
ports 137-139 – NetBIOS NetB Both
port 143 – IMAP TCP
port 161/162 – SNMP (data) Both
port 389 – LDAP (control) TCP
port 427 – SLP Both
port 443 – HTTPS Both
port 445 – SMB/CIFS Both
port 548 – AFP TCP
port 3389 – RDP Both

6. Match the wireless protocol to the description.

Explanation: Place the options in the following order:

A legacy WLAN standard with a maximum speed of 54 Mb/s. 802.11g
The standard that all WLAN should use when implementing new devices. 802.11ac
A wireless PAN technology that supports up to seven connected devices. Bluetooth
A technology that meets the standards for fourth generation mobile phones. LTE
A smart home standard with some open source code that uses IEEE 802.15.4. Zigbee
A cellular technology that supports speeds of up to 3 Gb/s download and 1.5 Gb/s upload. 5G
A proprietary smart home standard that can support up to 232 connected devices in the same wireless mesh network. Z-Wave
A tag and reader system can accommodate ranges from 25 meters for passive tags and up to 100 meters for active tags. RFID
A secure close proximity transaction system typically used for wireless payments. NFC

7. Match network server to the description.

Explanation: Place the options in the following order:

Typically uses a AAA server. Authentication
Provides IP addresses to hosts on the network. DHCP
Translates a domain name, such as, to an IP address. DNS
Provides a method for storing system messages from networking devices. Syslog
Uses protocols such as SMTP and POP3 to send and receive messages. Mail
Uses protocols such as HTTP and HTTPS to display information in a browser. Web
Provides the ability to cache web pages for quick access. Proxy
Uses protocols such as FTPS, SFTP, and SCP. File

8. Match network device to the characteristic.

Explanation: Place the options in the following order:

Regenerates weak network signals. Repeater
Connects end devices to the network. NIC
A legacy device that was used to divide a LAN into segments. Bridges
A device that connects networks and forwards data based on the IP address. Router
A legacy device that extended the number of devices that could be connected to the LAN. Hub
A device that microsegments a LAN and forwards data based on the MAC address. Wireless AP
A device that uses radio waves to extend the distance of a network. Switch

9. Match security device to the characteristic.

Explanation: Place the options in the following order:

A device that offers stateful packet inspection along with other advanced features. Firewall
A device that centralizes the view of all devices in the network so that administrators can manage them from one interface. IPS
A device that is installed inline on the network to evaluate traffic before forwarding it to the destination. IDS
A device placed between an internal and external network to filter traffic based on rules defined in an ACL. Endpoint management server
A device that copies traffic and forwards to a management station for evaluation. UTM

10. Match the term to the respective description.

Explanation: Place the options in the following order:

Sending data down power lines to networked devices. Power over Ethernet
Collection point for cable runs from networking devices. Ethernet over Power
Sending low voltage electricity down a network cable to power devices. Embeded
A device that allows administrators to remotely manage many devices through one dashboard interface. Cloud-based network controller
A system that no longer be upgraded or patched. Legacy
Special purpose microchips that are programmed to carry out specific functions. Patch panel

11. Match network tool to the description

Explanation: Place the options in the following order:

Test the functionality of the send and receive signals on computer ports. Loopback adapter
Checks for wiring shorts, faults, and wires connected to the wrong pins. Tone generator and probe
Measures electrical characteristics to test the integrity of circuits. Multimeter
Used to attach RJ-45 and RJ-11 connectors to cables. Crimper
Used to trace the remote end of a cable for testing and troubleshooting. Cable tester
Primarily used to determine signal strength so that access points can be positioned for maximum coverag. Wi-Fi analyzer
Designed to snip aluminum and copper wire. Wire cutter
Typically come with a variety of notches for different wire gauges.

Wire stripper

12. Match fiber cabling term to the definition.

Explanation: Place the options in the following order:

Uses LED emitters and popular for LANs and runs up to 550 meters. Multimode fiber
Technology used to send and receive on a single strand of fiber. WDM
Uses a laser and popular for long distance runs FONTning hundreds of kilometers. Single-mode fiber
Element in a fiber optic cable through which light pulses travel. Core
Acts like a mirror reflecting light to keep it traveling down the fiber. Cladding

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