SAMENVATTING NETWERKEN –
PROPEDEUSE FASE
Auteur: Maarten Regterschot
,INTRODUCTIE
• 4 studiepunten
• 50 meerkeuzevragen
HOOFDSTUK 1
• Fixed
• BYOD
• Internet of Things
• Internet of Everything
• Client/server model
• Peer to pear
o Slecht schaalbaar
o Niet goed beveiligd
CO MPO NENTS O F A NETW O RK
• End Devices
o Ezelsbrug: Iets waar je bij kunt komen (kunt aanraken)
o Computers, Network printers, VOIP phones, telepresence, security camera, mobile handheld
devices.
• Intermediary Network Device
o Network Access Device (switch/wireless ap)
o Internetworking devices (routers)
o Security devices (firewalls)
• Network Media
o Copper
o Fiber Optic
o Wireless
TO PO LO GY DI AGRAMS
• Physical Topology (Wat staat er in - fysiek ingedeeld over gebouwen etc)
• Logical Topology (Hoe het werkt - ip adressen etc)
LANS AND W ANS
• Local Area Network (LAN): A network serving a home, building of campus
• Wide Area Network (WAN): LANs seperated by geographic distance are connected by a network
known as Wide Area Network.
• Metropolitan Area Network (MAN): Windesheim zwolle/almere
• Wireless LAN (WLAN): Draadloos
• Storage Area Network (SAN): Netwerk van opslagdevices
• Internetworks: LANs en WANs may be connected into internetworks. (THE INTERNET)
• Intranet: Company
• Extranet: Suppliers/customers/collaberators
• The Internet: The world
Auteur: Maarten Regterschot
,CO NNECTI NG TO THE I NTERNET
• Home user/Teleworker/Small office -> Internet Service Provider (ISP) -> Internet (telefoonlijn, dsl,
cable, satellite)
• Organization -> ISP -> Internet (dedicated lease lines, metro ethernet, dsl, satellite)
CO NVERGI NG NETW O RKS
• Samenvoegen van netwerken. Allerlei soorten data gaat over internet.
• Rule Argeement Standard (set van afspraken, bv TCP/UDP)
• Geconvergeerd: Meerdere soorten data over één netwerk.
RELI ABLE NETW O RK
• Fault Tolerance
o Circuit Switched Network: Vaste lijn die niet dynamisch is.
o Packet-Switched Networks: Meerdere routes mogelijk – hij kiest het beste pad en kan
eventueel een ander pad kiezen
▪ Source address – Destination Address – Sequence Number
• Scalability
o Tier 1: At the center of the internet. ISP provide national and international connections.
These ISPs treat each other as equals.
o Tier 2: ISPs are amsller and often provide regional service. Tier 2 ISPs usually pay Tier 1 ISPs
for connectivity to the rest of the internet.
o Tier 3
• Quality of Service (QoS)
o Time sensitive communication (increased priority for services like telephony of video
destribution)
o None time-sensitive communication (minder belangrijke data)
• Security
NETW O RK TRENDS
• Bring Your Own Device (BYOD)
• Online Collaberation (Telepresence/online conferencing/messaging/ip communication (skype))
• Video
• Cloud Computing
o Organizational flexibility
o Agility and rapid deployment
o Reduced cost of infrastructure
o Refocus of IT resoruces
o Creation of a new business models
o Dropbox/Google Drive etc
o Ezelsbrug: Als je niet weet waar je data heen gaat is het cloud
DATACENTER
• Redundant data communications connections
• High speed virtualservers
Auteur: Maarten Regterschot
, • Redundant storage systems
• Redundant or backup power supplies
• Environmental controls
• Security devices
NETW O RKI NG TECHNO LO GI ES FO R THE HO ME
• Smart Home: Via de cloud communiceren met bv auto of telefoon
• Powerline Networking: Internetten over stroomnetwerk
NETW O RK SECURI TY
• Security threats
o Viruses, worms, trojan horses
o Spyware and adware
o Zero-day attacks (also called zero-hour attacks)
o Hacker attacks
o Denial of Service (DoS) attacks
o Data interception and theft
o Identity theft
• Security solutions
o Antivrus and antispyware
o Firewall filtering
o Deicated firewall systems
o Access control lists (ACL)
o Introsion Prevention Systems (IPS)
HOOFDSTUK 2
CI SCO I O S
• Operating System (firmware)
o Cisco ISO: Collection of network operating systems used on Cisco devices
o Hardware
o Kernel: Tussen de hardware en software communicatie
o Shell: Gebruikersinterface
• Location of Cisco iOS
o Stored in Flash
▪ NVRAM (Non-volatile ram – niet verloren als power uit gaat)
▪ IOS copied from flash (RAM) to NVRAM
• Console Access Method
o Console
▪ Console Cable
▪ Password reset
▪ Accessible if no networking services have been configured (Out-of-band)
o Telnet/SSH (bv Putty)
o AUX port – Out-of-band, telefphone line, can be used like console port.
NAVI GATI NG THE I O S
• User EXEC mode: router>
Auteur: Maarten Regterschot
PROPEDEUSE FASE
Auteur: Maarten Regterschot
,INTRODUCTIE
• 4 studiepunten
• 50 meerkeuzevragen
HOOFDSTUK 1
• Fixed
• BYOD
• Internet of Things
• Internet of Everything
• Client/server model
• Peer to pear
o Slecht schaalbaar
o Niet goed beveiligd
CO MPO NENTS O F A NETW O RK
• End Devices
o Ezelsbrug: Iets waar je bij kunt komen (kunt aanraken)
o Computers, Network printers, VOIP phones, telepresence, security camera, mobile handheld
devices.
• Intermediary Network Device
o Network Access Device (switch/wireless ap)
o Internetworking devices (routers)
o Security devices (firewalls)
• Network Media
o Copper
o Fiber Optic
o Wireless
TO PO LO GY DI AGRAMS
• Physical Topology (Wat staat er in - fysiek ingedeeld over gebouwen etc)
• Logical Topology (Hoe het werkt - ip adressen etc)
LANS AND W ANS
• Local Area Network (LAN): A network serving a home, building of campus
• Wide Area Network (WAN): LANs seperated by geographic distance are connected by a network
known as Wide Area Network.
• Metropolitan Area Network (MAN): Windesheim zwolle/almere
• Wireless LAN (WLAN): Draadloos
• Storage Area Network (SAN): Netwerk van opslagdevices
• Internetworks: LANs en WANs may be connected into internetworks. (THE INTERNET)
• Intranet: Company
• Extranet: Suppliers/customers/collaberators
• The Internet: The world
Auteur: Maarten Regterschot
,CO NNECTI NG TO THE I NTERNET
• Home user/Teleworker/Small office -> Internet Service Provider (ISP) -> Internet (telefoonlijn, dsl,
cable, satellite)
• Organization -> ISP -> Internet (dedicated lease lines, metro ethernet, dsl, satellite)
CO NVERGI NG NETW O RKS
• Samenvoegen van netwerken. Allerlei soorten data gaat over internet.
• Rule Argeement Standard (set van afspraken, bv TCP/UDP)
• Geconvergeerd: Meerdere soorten data over één netwerk.
RELI ABLE NETW O RK
• Fault Tolerance
o Circuit Switched Network: Vaste lijn die niet dynamisch is.
o Packet-Switched Networks: Meerdere routes mogelijk – hij kiest het beste pad en kan
eventueel een ander pad kiezen
▪ Source address – Destination Address – Sequence Number
• Scalability
o Tier 1: At the center of the internet. ISP provide national and international connections.
These ISPs treat each other as equals.
o Tier 2: ISPs are amsller and often provide regional service. Tier 2 ISPs usually pay Tier 1 ISPs
for connectivity to the rest of the internet.
o Tier 3
• Quality of Service (QoS)
o Time sensitive communication (increased priority for services like telephony of video
destribution)
o None time-sensitive communication (minder belangrijke data)
• Security
NETW O RK TRENDS
• Bring Your Own Device (BYOD)
• Online Collaberation (Telepresence/online conferencing/messaging/ip communication (skype))
• Video
• Cloud Computing
o Organizational flexibility
o Agility and rapid deployment
o Reduced cost of infrastructure
o Refocus of IT resoruces
o Creation of a new business models
o Dropbox/Google Drive etc
o Ezelsbrug: Als je niet weet waar je data heen gaat is het cloud
DATACENTER
• Redundant data communications connections
• High speed virtualservers
Auteur: Maarten Regterschot
, • Redundant storage systems
• Redundant or backup power supplies
• Environmental controls
• Security devices
NETW O RKI NG TECHNO LO GI ES FO R THE HO ME
• Smart Home: Via de cloud communiceren met bv auto of telefoon
• Powerline Networking: Internetten over stroomnetwerk
NETW O RK SECURI TY
• Security threats
o Viruses, worms, trojan horses
o Spyware and adware
o Zero-day attacks (also called zero-hour attacks)
o Hacker attacks
o Denial of Service (DoS) attacks
o Data interception and theft
o Identity theft
• Security solutions
o Antivrus and antispyware
o Firewall filtering
o Deicated firewall systems
o Access control lists (ACL)
o Introsion Prevention Systems (IPS)
HOOFDSTUK 2
CI SCO I O S
• Operating System (firmware)
o Cisco ISO: Collection of network operating systems used on Cisco devices
o Hardware
o Kernel: Tussen de hardware en software communicatie
o Shell: Gebruikersinterface
• Location of Cisco iOS
o Stored in Flash
▪ NVRAM (Non-volatile ram – niet verloren als power uit gaat)
▪ IOS copied from flash (RAM) to NVRAM
• Console Access Method
o Console
▪ Console Cable
▪ Password reset
▪ Accessible if no networking services have been configured (Out-of-band)
o Telnet/SSH (bv Putty)
o AUX port – Out-of-band, telefphone line, can be used like console port.
NAVI GATI NG THE I O S
• User EXEC mode: router>
Auteur: Maarten Regterschot
