OSI-TCP/IP
This is the Layer where you will find IP addressing and Routing. (Please name the layer number and name.)
What is Layer 3, or the Network Layer?
If I need to allow access through a firewall for all possible non-secure email traffic, I would allow these three ports.
What are ports 25, 110, and 143?
Being a shared access medium, wireless uses this to cope with contention.
What is CSMA/CA?
Ethernet is the only widely supported standard for cabled LANs, and is known as this IEEE standard.
What is IEEE 802.3?
This command allows you to check the state of ports on the local host.
What is netstat?
Some of the devices found at this layer of the OSI model are the hub, the repeater, and the media converter.
What is Layer 1? (The Physical Layer)
This protocol provides a connection-oriented, guaranteed method of communication using acknowledgement to ensure delivery.
What is TCP?
These are the frequency bands utilized by Wireless.
What are 2.4 GHz and 5 GHz (and 6 GHz)?
802.1D is the IEEE standard for this protocol, without it we might find our traffic infinitely looping around our switched networks.
What is Spanning Tree Protocol?
A command line tool is used for scanning remote hosts and networks, and is also used to discover hosts and map out the network topology.
What is Nmap?
As data travels down the stack of OSI layers each layer, except the physical, adds a header to the data payload in a process known as this.
What is encapsulation?
When you combine a port number and an IP address you get this.
What is a socket?
In 802.11n you can use this method to obtain more bandwidth by using two adjacent 20 MHz channels as a single 40 MHz channel.
What is channel bonding?
If you need to classify and prioritize traffic passing over a switch or wireless access point at Layer 2, you may find yourself needing to implement this IEEE standard.
What is IEEE 802.1p?
This command-line packet capture utility is generally used for Linux, and makes efficient use of filters for detailed results.
What is tcpdump?
We refer to data as this, at Layer 4 of the OSI Model.
What are Segments?
These two protocols are known as the web ports and the web protocols, and can provide for both secure and unsecure access to a web server. (Name ports and protocols)
What are HTTP (80) and HTTPS (443)?
These two standards are used to supply electrical power from a swtichport over ordinary data cabling to a connected powered device.
What are IEEE 802.3af and 802.3at?
This utility performs a basic connectivity test, sending ICMP packets to a destination host.
What is ping?
The name of the only layer of the OSI Model to have sublayers, and the names of the sublayers.
What are the Data Link Layer (Layer 2), and the MAC Sublayer and the Logical Link Control Sublayer?
If you want to manage and monitor remote devices on your network you need to employ this protocol and its corresponding port.
What is SNMP, port 161?
The recommended channels to use in 2.4 GHz frequency band if you want the least amount of channel overlap.
What are 1, 6, and 11?
These commands are utilized to verify the IP configuration on a Windows-based system and a Linux-based system, respectively.
What are ipconfig and ifconfig?
The four layers of the TCP/IP model that correspond to the seven layers of the OSI Model
What are the Network layer, the Internet layer, the Transport layer, and the Application layer?
I need to SSH into my firewall and open some ports for access. Specifically, NTP, RDP, and SQL. These are the four ports required for ALL of my actions.
What are ports 22, 123, 3389, and 1433?
This process allows the AP to use multiple antennas to process a spatial stream of signals in the direction of a particular station separately to other streams. It is also known as beamforming. You must say the name of the process in its complete form.
What is MU-MIMO, Multiuser Multiple Input Multiple Output?
What us the Institute of Electrical and Electronics Engineers?