Networking Flashcards
What type of cable is used to connect a cable modem to the Internet?
coaxial cable
Explanation:
Cable Internet service uses coaxial cable, the same type used for cable TV. It has a shielded single solid copper core.
Which protocol is associated with TCP/IP port 53?
Domain Name System (DNS)
Explanation:
DNS uses port 53 and translates domain names into IP addresses.
If a host does not get a dynamic IP address from DHCP, an address can be manually configured. What type of IP address is this?
static IP address
Explanation:
IP addresses can be dynamic or static. DHCP assigns dynamic addresses, while static addresses are manually configured.
A(n) ____ area network would most likely be used in an office setting.
Local Area Network (LAN)
Explanation:
Smaller local networks, like inside an office, communicate within a LAN, and typically use ethernet for connections.
What networking tool is used to remove the sheathing from cables?
cable stripper
Explanation:
A cable stripper is a networking tool that can remove the outer sheathing from a cable without damaging the underlying cable.
What type of router connects your home network to another network, typically the internet?
gateway router
Explanation:
A gateway router sits between two networks, most commonly a local network and the internet.
What governing body defines communications channels in the US?
Federal Communications Commission (FCC)
Explanation:
The FCC regulates communications channels in the US and has defined the 11 22 MHz wireless channels available for public use in the US.
What does SSH stand for?
Secure Shell
Explanation:
SSH uses port 22 and provides a secure way to access a remote systems terminal.
What type of modem provides connectivity through a fiber-optic cable?
optical network terminal modem
Explanation:
An optical network terminal (ONT) modem is a modem that uses a fiber-optic cable for connectivity.
What does QoS stand for?
Quality of Service
Explanation:
QoS allows for networks to be able to prioritize traffic, most commonly sensitive voice traffic like VoIP.
Which technology uses the wires in an ethernet cable to send electrical power to a device?
Power over Ethernet (PoE)
Explanation:
PoE allows you to make use of your existing ethernet cable infrastructure and use it to power devices in places where there is no power connection. A common use is for VoIP phones.
Network cabling in a building is typically organized by bringing all cables into a wiring closet and connecting them to a ____, where cable interconnections can easily be made.
patch panel or punch down block
Explanation:
Network cabling is terminated at a punch down block connected to a patch panel where connections are made.
This type of device provides communication between networks and is often used as an endpoint in WAN connections.
router
Explanation:
A router routes information between different networks, most commonly WANs.
Which type of plug is used to test the functionality of your network interface card (NIC)?
loopback plug
Explanation:
A loopback plug is wired to send and receive signals to itself, for use in testing a network interface card or network connection solely using the plug.
What type of device, either hardware or software, filters network traffic based on a set of predefined rules?
firewall
Explanation:
A firewall can be either a hardware or software device and is designed to filter traffic based on specified rules. A firewall should be placed physically or logically between the internal network and the internet to provide maximum security.
Which protocol is considered connectionless and insecure?
UDP
Explanation:
User datagram protocol (UDP) sends data without establishing a verified connection to the target destination, making it a connectionless protocol. Due to this lack of verified connection, the UDP protocol is also considered insecure.
DHCP runs on what port(s)?
67 and 68
Explanation:
DHCP uses ports 67 and 68 to dynamically assign IP addresses to clients.
What device is also known as a multiport repeater?
hub
Explanation:
A hub, also known as a multiport repeater, is a layer 1 dumb device that sends incoming transmissions to all connected devices as a broadcast.
What are the two operating frequencies for Wi-Fi?
2.4 and 5 GHz
Explanation:
Wi-Fi uses 2.4 and 5 GHz frequencies for wireless transmissions. A 2.4 GHz frequency offers a longer range with slower transmission while a 5 GHz frequency has a shorter range but faster transmission speed.
What server acts as a gatekeeper for critical network components?
AAA
Explanation:
An authentication, authorization, and accounting (triple A or AAA) server provides security to a network by acting as a gatekeeper for critical components. An AAA server is also known as a domain controller.
