11I SECURITY STANDARD.WINDOW THE TERM WINDOW REPRESENTS THE NUMBER...
802.11i security standard.
window
The term window represents the number of bytes that can be sent without
receiving an acknowledgment.
wired equivalent privacy (WEP)
An early WLAN security specification that used
relatively weak security mechanisms, using only preshared keys and either no
encryption or weak encryption.
WLAN client
A wireless device that wants to gain access to a wireless access point
for the purpose of communicating with other wireless devices or other devices
connected to the wired internetwork.
WPA2
The Wi-Fi Alliance trademarked name for the same set of security
specifications defined in the IEEE 802.11i security standard.
Z
zero subnet
For every classful IPv4 network that is subnetted, the one subnet whose
subnet number has all binary 0s in the subnet part of the number. In decimal, the zero
subnet can be easily identified because it is the same number as the classful network
number.
Index
Numerics
address translation
NAT, 531–535
1000BASE-T cabling, 58
PAT, 531–535
100BASE-TX, cabling pinouts, 55–58
addressing, network layer, 103–104
10BASE2 Ethernet, 48
adjacent-layer interaction, 26–27
10BASE5 Ethernet, 49–50
AES (Advanced Encryption Standard), 326
10BASE-T networks, 171
analog modems, 517–519
bridges, 172
demodulation, 517
building, 51–52
analyzing
cabling pinouts, 55–58
Layer 2 forwarding path, 289–293
hubs, 172
subnet masks, 356–357
switches, 173–174
practice examples, 361
AND operations, 349–350
A
bitwise Boolean ANDing, 350–351
ANDing, 369–370
A/D conversion, PCM, 516
ANSI (American National Standards
access
Institute), 79
attacks, 155
anti-x, 160
links, 87
application layer (TCP/IP architectural
switches, 189
model), 23–25
access points (AP), 302
applications, TCP/IP, 138
configuring, 317–318
DNS, 139
rogue APs, 320
FTP, 139
transmit power, 311
QoS needs, 146–147
accessing
SNMP, 139
CLI on Cisco IOS Software, 205
TCP, 139
enable mode, 211
well-known port numbers, 139
from console port, 206–208
WWW, 139, 149–152
password security, 208–210
APs (access point), 302
user EXEC mode, 210
with SSH, 208
with Telnet, 208
practice exam, 566
architectural models, 24–25. See also OSI
setup mode, 222
reference model; TCP/IP architectural
ACK flag (TCP), 143
model
acknowledgments, 25
ARIN (American Registry for Internet
AD (administrative distance), 461–462
Numbers), 110
ad hoc WLANs, 305
Address field (HDLC), 83
ARP (Address Resolution Protocol),
boot sequence of Cisco IOS Software, 423–425
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