Networking Fundamentals
Name two types of networking topologies.
Bus, ring, star, and mesh.
What does a router do?
A router is a networking device that forwards data packets between networks.
What does DHCP do?
DHCP is a protocol used to automatically assign IP addresses and other network configuration parameters.
What is the difference between TCP and UDP?
TCP provides error checking and data recovery mechanisms. UDP does not provide error checking or recovery mechanisms.
What layer of the OSI model is the transport layer.
Layer 4
What is an IP address.
A subnet mask used to divide an IP address into a network portion and a host portion.
What is the difference between a hub and a switch?
A hub sends data packets to all connected devices, while a switch sends data packets only to the intended device.
What does DNS do?
DNS is a protocol used to translate domain names (such as www.google.com) into IP addresses.
What is a service and protocol that prefer UDP for fast transmission and low overhead?
DNS & VoIP
What happens if part of an FTP message is not delivered to the destination?
The part of the FTP message that was lost is resent
What does a default gateway do?
A gateway is a device that connects devices on the LAN to another network.
What does a wireless access point do?
A wireless access point enables wireless devices to connect to a wired network.
What does FTP do?
FTP is a protocol used to transfer files between computers on a network.
Can TCP and UDP be used together in the same application?
(True or False)
True, TCP and UDP can be used together in the same application. This is known as a hybrid protocol or a multiplexed protocol.
Name the TCP process that initiates the transfer of data.
Three-way handshake
What does a firewall do?
A firewall filters incoming and outgoing network traffic based on a set of predefined rules.
What does a repeater do?
A repeater amplifies and retransmits a signal to extend the range of a network.
What two commands use the ICMP protocol?
Ping and Tracert
What is the range of TCP and UDP well known ports?
0 - 1023
What is the purpose of the Spanning Tree Protocol (STP)?
STP is used to prevent looping within a network.
What is the difference between half-duplex and full-duplex?
Half-duplex only one device can transmit data at a time. Full-duplex allows for multiple devices to send data at the same time.
What does a modem do?
A modem converts digital data into analog data.
What is HTTP or HTTPS used for?
HTTP or HTTPS is used to transfer data over the World Wide Web.
How does TCP ensure reliable delivery of data?
BY assigning a sequence number to each octet it transmits and requiring a positive acknowledgment (ACK).
What is a socket.
IP address : Port Number