The OSI Model
Here you'll find "logical" rather than "physical" addressing.
Network Layer
A form of transmission that allows several signals to travel simultaneously over one medium.
Multiplexing
IPv6 address has ......... bits written as ......... blocks of hexadecimal numbers.
128 bits, 8 blocks
It is a graphical representation of a network’s wired infrastructure.
Wiring Schematic
"Testing your theory or hypothesis" is which step in a structured troubleshooting methodology?
The 3rd step
Services, such as e-mail and file sharing, belong to this layer.
Application Layer
We use this type of fiber optic cable for full-duplex communication.
Zipcord Cable
When a network is configured to use both IPv4 and IPv6.
Dual Stacked
It consists of both a host’s IP address and a process’s TCP or UDP port, with a colon separating the two values.
Socket
The first step in a structured network troubleshooting methodology is ............
Identify the problem and its symptoms
This layer handles formatting data being exchanged and securing that data with encryption.
Presentation Layer
Three factors that can degrade network performance.
Noise, Attenuation, Latency
Process of assigning a TCP port number to each ongoing session between a local host and Internet host
Port Address Translation or PAT
What is the main difference between APC and UPC connectors?
The main difference between APC and UPC connectors is the fiber endface. APC connectors fiber endface is polished at an eight-degree angle and UPC connectors fiber endface is polished with no angle.
This is the last thing you should do when troubleshooting.
Document findings, actions, outcomes
A MAC address will lead you to this layer.
Data Link Layer
Used to connect a computer to the console port of a router. All wires are reversed and terminations are a mirror image of each other.
Rollover Cable or Console Cable
A method used by IPv6 to transport IPv6 packets through or over an IPv4 network.
Tunneling
What is the difference between Namespace and Name Server?
Namespace: The entire collection of computer names and their associated IP addresses stored in databases on DNS name servers
Name servers: Computers that hold these databases, organized in a hierarchical structure
What is the next step after establishing and testing the theory to determine the cause?
Establish action plan for resolving the problem
Queuing up data until bandwidth is available is done at this layer.
Transport Layer
Hardware that enables networks or segments running on different media to interconnect and exchange signals.
Media Converter
What are "Router Solicitation" and "Router Advertisement" messages.
In the lase step of IPv6 autoconfiguration: The computer asks if a router on the network can provide configuration information. This message is called a RS (router solicitation). If a router responds with DHCP information in what’s called a RA (router advertisement) message, the computer uses whatever information this might be, such as the IP addresses of DNS servers or the network prefix.
Four addressing methods we use in OSI model and their assigned layers?
1.MAC Address (Data Link Layer)
2.IP Address (Network Layer )
3.Port Numbers (Transport Layer)
4.Fully Qualified Domain Name (FQDNs), Computer Names, and Host Names (Application Layer)
This problem occurs in computer networks when there is more than one Layer 2 path between two endpoints (e.g. multiple connections between two network switches or two ports on the same switch connected to each other).
Layer 2 Loop or Switching Loop