NETWORKS/ IP SERVICES Flashcards
(29 cards)
Types of NETWORK TOPOLOGY.
BUS- every PC is connected to a common medium
STAR-
RING
MESH
What are the layers of the Open Standard Interconnection (OSI) ?
P DNT SPA ( PLEASE DONT SPANK!)
PHYSICAL- controls the functional interface
DATA LINK- takes data from the PHYS and give it structure aka FRAME
NETWORK- translate LOGICAL addresses to PHYSICAL addresses
TRANSPORT- makes sure data is ERROR FREE
SESSION- the CONNECTION of 2 computers
PRESENTATION- FORMATS the data passed to the APPLICATION layer
APPLICATION- TOOLS used to ACCOMPLISH the task.
Defense Information Systems Network. (DISN)
wide area network transfer comms requirements IAW DODI 4640.14
What does ONENET stand for?
OCONUS Navy Enterprise Network, secure IT infrastructure on OCONUS navy locations
What does NMCI stand for?
Navy Marine Corps Intranet, operates in CONUS locations.
Difference between a VIRUS and WORM.
virus requires user interaction and worm can replicate without user interaction it just need to be added the network.
Pretends to be something its not to enter your system while hiding something bad.
TROJAN
OPENING that ALLOWS additional access to data.
BACKDOOR
PHISHING
using social medias to try to get information.
Outer Security Screening Router (OSSR)
uses ACL (access control list) to limit connection, 1st line of defense
Inner Security Screening Router (ISSR)
last line of defense, must like OSSR but also uses load balancing.
VSCAN
virus scan used to scan emails.
What is RAID?
redundant array of independent disc, fault tolerance, 4 types
OWA
outlook web access, web mail service provided by ONENET when Microsoft Outlook is not available.
What are the enterprise TIERS?
TIER
- REGIONAL HELP DESK
- FIELD SERVICES (LNSC)
- NETWORKS
- SUBJECT MATTER EXPERTS (GUYS IN SAM’S OFFICE)
NAME COMMON PORTS.
20/ 21- FILE TRANSFER PROTOCOL
22- SECURE SHELL PROTOCOL (SECURE SESSION WHEN LOGGING IN REMOTELY) ( DUB SS/22)
23- TELNET ( TAKE IT TO THE NET JORDAN)
25- SIMPLE MAIL TRANSFER PROTOCOL (SENDING MAIL)
53- DOMAIN NAME SYSTEM (CONVERTS NAMES INTO IPS)
80- HYPERTEXT TRANSFER PROTOCOL HTTP (WEB BROWSING)
110- POST OFFICE PROTOCOL POP3 ( RECEIVING MAIL)
443- HTTPS SECURE WEB BROWSING
PORTS 25 AND 110
SIMPLE MAIL TRANSFER PROTOCOL (SENDING MAIL)/POST OFFICE PROTOCOL POP3 ( RECEIVING MAIL)
PORTS 80 AND 443
HYPERTEXT TRANSFER PROTOCOL HTTP (WEB BROWSING) / HTTPS SECURE WEB BROWSING
PORTS 53
DOMAIN NAME SYSTEM (CONVERTS NAMES INTO IP ADDRESSES)
What services are supported by the HELP DESK?
SIPR/ NIPR/ DSN/ BLACKBERRY/ VTC
What are the Service Levels?
SL1- MISSION CRITICAL, WHERE OPERATIONS ARE AFFECTED, ASSIST 2-24HRS
SL2- SAME AS SL1 BUT DOES NOT HAVE A LNSC , OUR OUTLAYING LOCATIONS. ASSIST BEST EFFORT
SL3- EVERYONE ELSE , ASSIST AT THE LEAST 4 HR
What does ECRNOC stand for and can shut it down?
EASTERN Central Region Network Operations Center (NAPLES IT) , The CO/XO, OPS, JFTOC WATCH OFF.
DISA.
DEFENSE INFORMATION SYSTEMS AGENCY, provides real time intell and information exchange between producer and user.
NAVY CYBER DEFENSE OPERATIONS COMMAND/ NCDOC
oversees the defense of navy computer networks of computer network defense missions.
