SOHO ROUTERS Flashcards
(24 cards)
What’s a LAN?
A network in a single location is described as local area network,
What’s SOHO?
a category of LAN with a small number of
computing hosts that typically rely on a single integrated appliance for local and
Internet connectivity.
What’s the internet called?
Wide area networks (WANs)
The intermediate system powering SOHO networks is usually described as a
SOHO router because one of its primary functions is to forward traffic between
the ____ and the ____
LAN,WAN
In Soho router A number of ___ ports (typically four) to connect to a local cabled network, These
are typically labeled as the ___
RJ-45,LAN ports
SOHO routers have Radio antennas to t
transmit and receive wireless signals.
What’s ISP?
Internet service provider
what does an SOHO router provide at the physical layer?
1-A number of RJ-45 ports also known as lan ports
2-Radio antennas to transmit and receive wireless signals.
3-A type of modem to connect to the ISP network
What do SOHO routers provide at layer 2?
1-Ethernet switch-the RJ-45 jacks are connected internally by an Ethernet switch
2-Wireless access point-the radio antennas implement some version of the Wi-Fi
standard.
3-The access point is also wired to the Ethernet switch via an internal port
At layer 3, the network layer, the routing part of the SOHO router makes
forwarding decisions between the________and the_______
local private network, public Internet
______ addresses distinguish these zones.
Internet protocol (IP)
The _____uses a private IP address range, such as_______
local network, 192.168.1.0/24
The SOHO router itself is identified by an address in this range, such as
_______or______
192.168.1.1,192.168.1.254
What does SOHO router do in the network layer?
The router runs a dynamic host configuration protocol (DHCP) server to allocate
a unique address to each host that connects to it over either an Ethernet port or
via the wireless access point
what’s DHCP?
Dynamic Host Configuration Protocol.
The addresses assigned to clients use the same first _______ as the router’s
address:_______
three octets, 192.168.1
The last octet can be any value from _____ to ____, excluding whichever value is used
by the router
1,254
The firewall can be configured to block traffic based on _____ or ________IP
addresses and also on the _____
source, destination,type of application
At layer 4, each application is identified by ________, such as 80 for
_________ web traffic or 25 for_________
a port number, Hypertext Transfer Protocol (HTTP),
Simple Mail Transfer Protocol (SMTP)
Computers on the network might use the ________ protocol to share files
server message block (SMB)
It would not be appropriate for hosts on the Internet to be able to access these
shared files, so the ___ port would be blocked by default on the ____ interface
but allowed on the and ____ interfaces
SMB, WAN, LAN, WLAN
Most SOHO subscriber Internet access is facilitated via the ______
public switched telephone network (PSTN)
The SOHO router is described as ______
customer premises equipment (CPE)
What’s IXPs?
Internet exchange points
