OSI Ref. Model
The OSI Layer related to media, network topology, and the transmission of signals.
What is Physical Layer?
These two early implementations of Ethernet used coax cable.
What is Thicknet (10base5) and Thinnet (10base2)
This protocol transfers files with a remote host on ports 20 and 21
What is FTP?
All ports on this legacy device belong to the same collision domain, and therefore uses bandwidth inefficiently.
What is a hub?
IPv4 uses this addressing structure, measured in bits, to determine it's range of addresses. Unfortunately it's not large enough, because we are running out of addresses.
What is 32 bit?
The Layer where that MAC address lives.
What is the LAYER 2 (Data Link Layer) ?
10BASE-T, 100BASE-TX, and 1000BASE-TX us this kind of cable.
What is UTP (Unshielded Twisted Pair)?
To get email from an IMAP server, your firewall must allow communication on__________________.
What is Port 143?
_______________ joins two or more LAN segments, typically two Ethernet LAN segments, with each LAN segment is in separate collision domain.
What is a bridge?
If network is using a subnet mask of 255.255.255.0, then it is likely a Class____________ network.
What is Class C?
These two Layers are where SOHO and Enterprise switches live.
What is Layer 2 (Data Link Layer) -> SOHO
and
Layer 3 (Network Layer) ->ENTERPRISE ?
The maximum distance of a 1000BASE-LX Multimode Fiber run.
What is 5km?
To securely retrieve content from a web server, you would enable access it via _______________.
What is HTTPS (Port 443)?
_______________ forwards Ethernet frames based on the receiver's MAC address, and typically operates in Layer 2 of the OSI stack, although advanced versions may be Layer 3 devices.
What is a switch?
The IP address ranges of 10.0.x.x, 172.16.x.x and 192.168.x.x are know as ________________ .
What are private non-routable addresses?
This acts as a dividing line between the upper layers and lower layers of the OSI model.
What is Layer 4: The Transport Layer?
Type of ethernet port that carries a current to power WAPs, VoIP phones and IP security cameras.
What is POE (Power Over Ethernet)?
Server Message Block (SMB) is the protocol for sharing files, printers and other network resources on this port.
What is Port 445?
_______________ is Layer 3 device, making forwarding decisions based on logical network address information.
What is a Router?
Three categories of IPv4 addresses that differentiate how network traffic flow.
What are Broadcast, Multicast and Unicast?
The two most common transport layer protocols.
What are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)
This Ethernet protocol prevents Layer 2 loops from occurring in a network, preventing broadcast storms or corruption of a switch's MAC address table.
What is STP (Spanning Tree Protocol)?
This protocol is an important part of the World Wide Web and uses both TCP Port 53 AND UDP Port 53.
What is DNS?
______________ uses the SIP and RTP protocols for establishing communications.
What is a Voice Over IP (VOIP) Telephone?
A device does not have a statically configured IP address and is unable to contact a DHCP server may have this.
What is Automatic Private IP Addressing (APIPA)?