Module 3 Quizzes Flashcards
What centrally conncests wireless network nodes in the same way that a hub connects wired Ethernet PCs?
Wireless Access Point (WAP)
How many bits are in an IPv4 address?
32-bit
Under the class system, what was the default subnet mask for Class A addresses?
255..0.0.0
At what frequency range do the 802.11b- and 802.11g-based wireless technologies operate?
2,4GHz
How many bits does WEP encryption use to scramble data packets?
40
The IP address on the LAN side of a router is called the ____________.
Default gateway
If you use the _______ switch, ping continuously sends ping packets until you stip it with a break command.
-t
What identifies a machine on a network?
IP Address
IPv4.addresses in the range 169.254.0.1 to 169.254.255.254 represent which feature?
Automatic Private IP Addressing
What enables you to connect to the internet through a network arare smartphone, tablet or other mobile device?
Cellular wireless network
Most WAPs support filtering, in which data packets that do not contain the appropriate address are rejected. What kind of address is filtered?
MAC
What device connects a LAN’s witch to the next network?
Router
How many host IDs does a /20 network support?
4094 (2^12 -2)
How many bits are in an IPv6 address?
128
What instrument measures the impedance of a cable?
Time-domain reflectometer
At what frequency range does the 802.11a-based wireless technology operate?
5 GHz
What 802.11n feature increases its range and speed?
MIMO
Under the class system, what was the default subnet mask of Class C addresses?
255.255.255.0
What WPA/WPA2 encryption version uses a RADIUS server for secure authentication?
WPA/WPA2-Enterprise
What command allows you to quickly view a network?
Net
Under the class system, how many host IDs were available in a Class B network?
65534 (2^16-2)
In the IPv6 address 2002::3210:800:200C:CF:1234, how many groups of four zeros does the “::” notation represent?
2
After entering IPCONFIG at a command prompt, you notice you are using an IP address in the 169.254..0.1 to 169.254.255.254 address range. What is most likely explanation for being assigned one of these addresses?
The DHCP server is down.
What WAP settings should be adjusted in an environment with overlapping Wi-Fi signals?
Channel and frequency
A workgroup shares folder over the network. What does a Homegroup share?
Libraries
What command would you use to map a share to a drive letter on a computer?
Net use
What command displays a computer’s network settings?
Ipconfig
The IPv6 address FE80:12C7:388B:CF:7114 represents what type of address?
Link-local
A(n) _________ is a network organization that centralizes user accounts, passwords, and access to resources.
Domain
What frequencies does 802.11n use?
2.4 and 5 GHz
Like 802.11g, _________ WAPs can run in the 2.4 GHz ISM band, supporting earlier, slower 802.11b/g devices.
802.11n
Devices such as __________ and ___________ also use the 2.4-GHz frequency and can cause a great deal of interference.
Cordless phones, microwaves
Antennas and the signals that they transmit have an electromagnetic property called ________.
Polarization
Communication through infrared devices is implemented via the ________ protocol.
Infrared Data Association
Linux, macOS, and Windows fully supports the IEEE __________ standard, more commonly known as Wi-Fi __________ Access 2, to lock down wireless networks.
802.11i, Wi-Fi Protected
A(n) ___________ enables you to connect to the Internet through a network-aware smartphone, tablet or other mobile device.
Cellular wireless network
Originally, DNS names all ended with one of seven domain name qualifiers, called _______.
Top-level domains
TLDs
Moving and copying folders and files within network shares and between network shares and local computers doesn’t affect the file __________.
Attributes
Network techs use a device called a(n) ___________ for help in traching cables.
Toner
An IPv6 address that begins FE80:: is a(n) ________ address.
Link-local
An antenna strenthens and focuses the radio frequency (RF) output from a WAP. The ratio of increase called ______ is measured in decibels (dB).
Gain
A powerful command line program that enables you to determine the information on a DNS server is ___________.
Nslookup
Changing the default ____________ for a WAP is the first step in seeting up a new wireless network.
SSID
A service area that is extentded by adding WAPs is called a(n) __________.
EBSS
Extended Basic Service Set
A(n) ____________ enables Ethernet network communication using IrDA.
Infrared access point
All modern NICs operate in ___________ mode, meaning they can send and receive data at the same time.
Full duplex
IrDA links are direct ____________ and are susceptible to interference.
Line-of-sight
NIC LEDs, also known as ____________, provide clues about what’s happening with your network connection.
Link lights
In a TCP/IP network, the ____________ is used to block out the network portion of an IP address.
Subnet mask
Communication will fail if the encryption level, key, and ____________ do not match on the wireless client node.
Password
CIDR stands for ___________.
Classless Inter-Domain Routing
Machines that connect LANs are called _________
Routers
A(n) _____________ sends data out of the NIC and checks to see if it comes back.
Loopback test
::1 is the IPv6 ___________.
Loopback address
Infrared is designed to make a point-to-point connection between two devices only in __________ mode.
Ad hoc
