G01X Flashcards
G02: Define in writing Dynamic Multipoint Virtual Private Network (DMVPN)
DMVPN is a Cisco IOS Software solution for building IPSec VPNs in an easy and scalable manner. DMVPN uses a centralized architecture to provide easier implementation and management for deployments of diverse user communities, including mobile workers, telecommuters, and extranet users in the civilian world. In the Marine Corps, we utilize Cisco DMVPN technology specifically in the deployment of Very Small Aperture Terminals (VSATs). DMVPN prevents the need for pre-configured static tunnels to add a new spoke.
With DMVPN, tunnels can be created automatically on an as-needed basis and can be automatically “torn” down when they are no longer required. In Marine Corps VSAT networks, Cisco DMVPN allows spokes to communicate directly with each other over the WAN (reducing satellite hops) but doesn’t require a permanent VPN connection between sites (much like placing a VOIP call between two nodes without a direct Intercluster Trunk connection). It enables zero-touch deployment of IPSec tunnels and improves network performance by reducing latency and jitter, while optimizing hub bandwidth utilization.
G02: Define in writing Tunnel
A tunnel is a virtual path across a network that delivers packets that are encapsulated and possibly encrypted to a designated distant end.
*A tunnel, essentially, is the process of encapsulating one protocol (the payload protocol) inside another (the delivery protocol). The payload and the delivery protocols can be and are often the same.
G02: Define in writing Black Core Routing
Black Core Routing is a networking scheme for the interconnection of core network components where all data remains IPSec encrypted (black traffic) as it is transported across the core. The term Black Core describes the black-to-black interconnection of core network components.
*Still not as black as Lt Brown
G03: Define in writing the scale of employment for the KG-175 TACLANE
Either individual user or for enclaves of users
G03: Define in writing the maximum data rate of the KG-175D TACLANE-Micro
200 Mbps
G03: Define in writing the two types of cryptographic vectors utilized in the KG-175 TACLANE
Pre-Placed Key (PPK): PPK is the vector set commonly utilized in legacy Marine Corps encryptors
FIREFLY: FIREFLY vector sets utilize public-key cryptography technology, or asymmetric keying, which eliminates the need for frequent crypto changeovers and painstaking coordination of secret keys utilized by PPKs.
G04: Identify in writing the two (2) operational modes in which the WPPL-D can extend a Local Area Network (LAN) to remote sites
Point-to-Point (PTP) and Point-to-Multipoint
G04: Identify in writing the frequency range of the given transceiver
Antenna & Ethernet Radios
Harris Broadband 4.4-5.0 GHz
AN-80i Redline 5.470-5.725 GHz
G04: Identify the maximum data rate of the WPPL-D
54 Mbps (limited by USMC firmware)
G04: Identify in writing the appropriate multichannel radio symbol for the WPPL-D
Circle with a W in it
WPPL in the center
1x1 or 2x2 below it
## below the W for the unique placeholder id
G05: Identify in writing the frequency band in which the VSAT/SWAN-D operates
Ku-band
G05: Identify in writing the maximum satellite carrier size of the SWAN-D (V1/V2)
Maximum TDMA carrier size 5 Msps (Mega Symbols per Second)
G05: Identify in writing the satellite access method utilized by the SWAN-D (V1/V2)
SWAN-D v1 TDMA
SWAN-D v2 TDMA
VSAT-L FDMA/TDMA
G05: Define in writing the importance of the Very Small Aperture Terminal-Large (VSAT-Large) Frequency Division Multiple Access (FDMA) capability
FDMA is required for Standard Tactical Entry Point (STEP) access
G05: Identify in writing the importance of the Master Reference Terminal (MRT) suite within a VSAT/SWAN-D Time Division Multiple Access (TDMA) network architecture
The MRT suite serves as the network hub for control of the Linkway satellite network. The SWAN-D uses an MRT suite to control the timing of the TDMA network so that data collisions do not occur or are, at least, held to a minimum.
G05: Identify in writing the appropriate multichannel radio symbol for the VSAT/SWAN-D
Circle with a Z flipped vertically
## above the Z is the unique terminal id
Ku in the lower left
SWAN and antenna size (1.2/1.8/2.4) on right side
