WGU Network and Security-Foundations-C172
questions with verified answers
10.10.20.250 Ans✓✓✓-Example of a private IP address, a nonreturnable Internet
IP address, Class A address
10101010 Ans✓✓✓-Decimal equivalent of 170
10GBASE-T Ans✓✓✓-10Gbps over twisted-pair copper cable (splits the data into
4 channels of 2.5G each) Uses multilevel encoding to reduce required bandwidth
for tranmission
150.25.191.255 Ans✓✓✓-broadcast address for 150.25.151.68 with a mask of
255.255.192.0
192.168.55.0 dived into multiple subnets, need at lest 30 host ID's in each subnet;
maximum number of subnets you could have? Ans✓✓✓-8: Class C address and
we must use 5 bits for our hoses (2 to the 5th -2 = 30 hosts). That leaves 3 bits to
use for subnets. 2 to the 3rd = 8 subnets
255.255.255.224 Ans✓✓✓-Expressed as a /27 using CIDR notation because there
are 27 1s in the subnet mask
255.255.255.252.0 Ans✓✓✓-Expressed as /22 using CIDR notion because there
are 22 1s in the subnet mask
6to4 Prefix Ans✓✓✓-a technique that enables IPv6 hosts to communicate over
the IPv4 Internet
,802.11 technologies Ans✓✓✓-Don't use visible light; use FHSS, DSSS, infrared
802.11g advantage Ans✓✓✓-Compatible with 802.11b, high speed
802.11u Ans✓✓✓-802.11x standard increases security by incorporating user
authentication, not 802.11u
Absorption Ans✓✓✓-light interaction with the atomic structure of the fiber
material; also involves the conversion of optical power to head
Access Control List (ACLs) Ans✓✓✓-A basic form of firewall protection
Access Point Ans✓✓✓-A transceiver used to interconnect a wireless and a wired
LAN (looks as the SSID to determine if the data packet is intended for it's network)
ACK Ans✓✓✓-Acknowledgement packet
ACR Ans✓✓✓-The attention-to-crosstalk ratio measurement compares the signal
level from a transmitter at the far end to the crosstalk measured at the near end.
A larger ACR indicates that the cable has a greater data capacity and also indicates
the cable's ability to handle a greater bandwidth. Essentially, it is a combined
measurement of the quality of the cable. A higher ACR value (dB) is desirable.
Ad Hoc Ans✓✓✓-Another term used to describe an independent network
,AES Ans✓✓✓-Advanced Encryption Standard
Aging Time Ans✓✓✓-The length of time a MAC address remains assigned to a
port; length of time an IP address is assigned to a switchport
AH Ans✓✓✓-Authentication Header
Alien Crosstalk (AXT) Ans✓✓✓-Unwanted signal coupling from one permanent
link to another
Antivirus software Ans✓✓✓-Signatures or definitions contain traits of the specific
virus or worm
Anycast address Ans✓✓✓-Is obtained from a list of addresses.
Application Layer(7th layer) Ans✓✓✓-Interacts with application programs that
incorporate a communication component such as your internet browser and
email (provides user interface)
ARIN Ans✓✓✓-American Registry for Internet Numbers
ARP Cache Ans✓✓✓-Temporary storage of MAC addresses recently contacted
ARP Ans✓✓✓-Address Resolution Protocol, used to map and IP address to its
MAC address (the destination gets the sender's addresses from the ARP request)
, ARP Table Ans✓✓✓-Another name for the ARP cache
ARPAnet Ans✓✓✓-Advanced Research Projects Agency network
Association Ans✓✓✓-Indicates that the destination address is for an networking
device connected to one of the ports on the bridge (describes a wireless
connection and MAC address: wireless connection has been obtained, provides
the client MAC address)
Attenuation (Insertion Loss) Ans✓✓✓-The amount of loss in the signal strength
as it propagates down a wire or fiber strand (leakage and resistance cause
attenuation in fiber optic systems)
AUI Port Ans✓✓✓-This is a 10Mbps Ethernet port. AUI stands for "attachment
unit interface."
Auto-negotiation Ans✓✓✓-Protocol used by interconnected electronic devices to
negotiate a link speed (failed negotiation can cause a link failure, not
recommended for fixed data links) The link can only go as fast as the slowest link.
Auxiliary Input Ans✓✓✓-Used to connect a dial-in modem into the router. The
auxiliary port provides an alternative way to remotely log in to the router if the
network is down. This port also uses an RJ-45 connection
Backscatter Ans✓✓✓-Refers to the reflection of the radio waves striking the RFID
tag and reflecting back to the transmitter source.
Balanced mode Ans✓✓✓-Neither wire in the wire pairs connects to the ground
questions with verified answers
10.10.20.250 Ans✓✓✓-Example of a private IP address, a nonreturnable Internet
IP address, Class A address
10101010 Ans✓✓✓-Decimal equivalent of 170
10GBASE-T Ans✓✓✓-10Gbps over twisted-pair copper cable (splits the data into
4 channels of 2.5G each) Uses multilevel encoding to reduce required bandwidth
for tranmission
150.25.191.255 Ans✓✓✓-broadcast address for 150.25.151.68 with a mask of
255.255.192.0
192.168.55.0 dived into multiple subnets, need at lest 30 host ID's in each subnet;
maximum number of subnets you could have? Ans✓✓✓-8: Class C address and
we must use 5 bits for our hoses (2 to the 5th -2 = 30 hosts). That leaves 3 bits to
use for subnets. 2 to the 3rd = 8 subnets
255.255.255.224 Ans✓✓✓-Expressed as a /27 using CIDR notation because there
are 27 1s in the subnet mask
255.255.255.252.0 Ans✓✓✓-Expressed as /22 using CIDR notion because there
are 22 1s in the subnet mask
6to4 Prefix Ans✓✓✓-a technique that enables IPv6 hosts to communicate over
the IPv4 Internet
,802.11 technologies Ans✓✓✓-Don't use visible light; use FHSS, DSSS, infrared
802.11g advantage Ans✓✓✓-Compatible with 802.11b, high speed
802.11u Ans✓✓✓-802.11x standard increases security by incorporating user
authentication, not 802.11u
Absorption Ans✓✓✓-light interaction with the atomic structure of the fiber
material; also involves the conversion of optical power to head
Access Control List (ACLs) Ans✓✓✓-A basic form of firewall protection
Access Point Ans✓✓✓-A transceiver used to interconnect a wireless and a wired
LAN (looks as the SSID to determine if the data packet is intended for it's network)
ACK Ans✓✓✓-Acknowledgement packet
ACR Ans✓✓✓-The attention-to-crosstalk ratio measurement compares the signal
level from a transmitter at the far end to the crosstalk measured at the near end.
A larger ACR indicates that the cable has a greater data capacity and also indicates
the cable's ability to handle a greater bandwidth. Essentially, it is a combined
measurement of the quality of the cable. A higher ACR value (dB) is desirable.
Ad Hoc Ans✓✓✓-Another term used to describe an independent network
,AES Ans✓✓✓-Advanced Encryption Standard
Aging Time Ans✓✓✓-The length of time a MAC address remains assigned to a
port; length of time an IP address is assigned to a switchport
AH Ans✓✓✓-Authentication Header
Alien Crosstalk (AXT) Ans✓✓✓-Unwanted signal coupling from one permanent
link to another
Antivirus software Ans✓✓✓-Signatures or definitions contain traits of the specific
virus or worm
Anycast address Ans✓✓✓-Is obtained from a list of addresses.
Application Layer(7th layer) Ans✓✓✓-Interacts with application programs that
incorporate a communication component such as your internet browser and
email (provides user interface)
ARIN Ans✓✓✓-American Registry for Internet Numbers
ARP Cache Ans✓✓✓-Temporary storage of MAC addresses recently contacted
ARP Ans✓✓✓-Address Resolution Protocol, used to map and IP address to its
MAC address (the destination gets the sender's addresses from the ARP request)
, ARP Table Ans✓✓✓-Another name for the ARP cache
ARPAnet Ans✓✓✓-Advanced Research Projects Agency network
Association Ans✓✓✓-Indicates that the destination address is for an networking
device connected to one of the ports on the bridge (describes a wireless
connection and MAC address: wireless connection has been obtained, provides
the client MAC address)
Attenuation (Insertion Loss) Ans✓✓✓-The amount of loss in the signal strength
as it propagates down a wire or fiber strand (leakage and resistance cause
attenuation in fiber optic systems)
AUI Port Ans✓✓✓-This is a 10Mbps Ethernet port. AUI stands for "attachment
unit interface."
Auto-negotiation Ans✓✓✓-Protocol used by interconnected electronic devices to
negotiate a link speed (failed negotiation can cause a link failure, not
recommended for fixed data links) The link can only go as fast as the slowest link.
Auxiliary Input Ans✓✓✓-Used to connect a dial-in modem into the router. The
auxiliary port provides an alternative way to remotely log in to the router if the
network is down. This port also uses an RJ-45 connection
Backscatter Ans✓✓✓-Refers to the reflection of the radio waves striking the RFID
tag and reflecting back to the transmitter source.
Balanced mode Ans✓✓✓-Neither wire in the wire pairs connects to the ground
