ISM 4220 FINAL EXAM QUESTIONS AND ANSWERS
wireless LAN (WLAN) or wireless
Ethernet - Answers - A local area network that is not based on primarily on
physical wiring but uses wireless transmissions between
workstations
Access point - Answers - acts as a bridge between the wired and wireless
networks and can perform basic routing functions
Two basic components necessary for wireless Ethernet - Answers - - client radio
- Access point
Three basic configurations of wireless LAN - Answers - Basic Service Set, Extended
Service Set, and ad hoc
The 802.11 family consists of a series of ___________ connection - Answers - half
duplex
802.11 - Answers - 2 Mbps 300 ft
802.11b - Answers - 11 Mbps/5.5 Mbpd
802.11a - Answers - 54 Mbps 5GHz
802.11g - Answers - 54 Mbps 2.4 GHz backwards compatible with 802.11b
802.11n - Answers - 100 Mbps, 5 GHz - 2.4 GHz, 4 MIMO
802.11ac - Answers - 254 QAM, 500 Mbps, 8 MIMO
MAC address filtering - Answers - Method of controlling WLAN access, limit a device's
access to AP
• SSID broadcast - Answers - Can be discovered when transmitted in other frames
because it is
transmitted in other management frames sent by the AP
Wired Equivalent Privacy (WEP) - Answers - - WPA (Wi-Fi Protected Access): Temporal
Key Integrity Protocol (TKIP)
Encryption.
- WPA 2 uses the most advanced encryption techniques, AES
encryption.
, InterFrame Space (IFS) - Answers - CA (Collision avoidance) Before they transmit, all
devices must wait an amount of time
Several popular network OSs currently exist: - Answers - Windows Server family
- Unix
- Linux
- NetWare derivatives
Version 3 (released in 1989)
Novel NetWrae - Answers - - One of the main features is the bindery
Bindery - Answers - is a structure that contains the usernames and
passwords of network users and groups.
It also holds information about other services provided by the
server to the client such as printer, modem and router access
information.
Bindery maintains directory system
Bindery was replaced by - Answers - NDS (Network Directory
System) database
c idea underlying NDS is that the network administrator
must create a hierarchical tree that represents the layout of the
organization.
Windows > NT biggest change - Answers - Active directory
Active directory - Answers - is central repository for all objects that make up the
enterprise: domains, organizational units, users, groups, computers, printers, etc
- Network servers - Answers - are high-power workstations often
with multiple processors, RAID, SCSI, and lots of
memory and disk space
To protect the server from catastrophic disk failure, disk drives on
most network servers support one of the - Answers - redundant array of
independent disks (RAID) techniques
• MANs are based on one of two basic forms of supporting
technology: - Answers - SONET or Ethernet.
One of the latest forms of the metropolitan area network
wireless LAN (WLAN) or wireless
Ethernet - Answers - A local area network that is not based on primarily on
physical wiring but uses wireless transmissions between
workstations
Access point - Answers - acts as a bridge between the wired and wireless
networks and can perform basic routing functions
Two basic components necessary for wireless Ethernet - Answers - - client radio
- Access point
Three basic configurations of wireless LAN - Answers - Basic Service Set, Extended
Service Set, and ad hoc
The 802.11 family consists of a series of ___________ connection - Answers - half
duplex
802.11 - Answers - 2 Mbps 300 ft
802.11b - Answers - 11 Mbps/5.5 Mbpd
802.11a - Answers - 54 Mbps 5GHz
802.11g - Answers - 54 Mbps 2.4 GHz backwards compatible with 802.11b
802.11n - Answers - 100 Mbps, 5 GHz - 2.4 GHz, 4 MIMO
802.11ac - Answers - 254 QAM, 500 Mbps, 8 MIMO
MAC address filtering - Answers - Method of controlling WLAN access, limit a device's
access to AP
• SSID broadcast - Answers - Can be discovered when transmitted in other frames
because it is
transmitted in other management frames sent by the AP
Wired Equivalent Privacy (WEP) - Answers - - WPA (Wi-Fi Protected Access): Temporal
Key Integrity Protocol (TKIP)
Encryption.
- WPA 2 uses the most advanced encryption techniques, AES
encryption.
, InterFrame Space (IFS) - Answers - CA (Collision avoidance) Before they transmit, all
devices must wait an amount of time
Several popular network OSs currently exist: - Answers - Windows Server family
- Unix
- Linux
- NetWare derivatives
Version 3 (released in 1989)
Novel NetWrae - Answers - - One of the main features is the bindery
Bindery - Answers - is a structure that contains the usernames and
passwords of network users and groups.
It also holds information about other services provided by the
server to the client such as printer, modem and router access
information.
Bindery maintains directory system
Bindery was replaced by - Answers - NDS (Network Directory
System) database
c idea underlying NDS is that the network administrator
must create a hierarchical tree that represents the layout of the
organization.
Windows > NT biggest change - Answers - Active directory
Active directory - Answers - is central repository for all objects that make up the
enterprise: domains, organizational units, users, groups, computers, printers, etc
- Network servers - Answers - are high-power workstations often
with multiple processors, RAID, SCSI, and lots of
memory and disk space
To protect the server from catastrophic disk failure, disk drives on
most network servers support one of the - Answers - redundant array of
independent disks (RAID) techniques
• MANs are based on one of two basic forms of supporting
technology: - Answers - SONET or Ethernet.
One of the latest forms of the metropolitan area network
