Networking Flashcards
(39 cards)
What is a non-ephemeral port and what is their range?
permanent port numbers. Ports 0 - 1,023. usually on a server or service
Define ephemeral ports and their port number range?
A temporary port number used by the client. Using ports 1,024 - 65,535. Determined in real time by the client
what are the common uses of a repeater?
boost copper or fiber connections. Convert one network media to another. extend wireless network reach
what is a bridge ?
a switch with two to four ports - makes forwarding decisions in software. Distributes traffic based on MAC address and connects different LANs
what is an unmanaged switch ?
switch with basic functionality. Very few config options - plug and play
what is a managed switch ?
more functionality. configure different VLANS on different interfaces. Traffic prioritization. Redundancy support using STP. External Mgmt with SNMP. Port mirroring -capture packets
a Wireless Access Point (WAP) acts as a _____
Bridge . it extends the wired network onto the wireless network and makes forwarding decisions based on MAC address
organizations use _______ for centralized management of their WAPs
Wireless LAN controller
______ are used to filter traffic by port number
Firewalls. Traditionally filter by UDP/TCP port # known as OSI layer 4 filtering. Modern firewalls can examine everything in traffic flow including the application thats in use
A _____ modem uses telephone lines to transfer data
DSL. Download speed is faster than upload speed making it a - symmetric. 52 mbit/s downstream / 16 mbit/s upstream are common
_________ is when you provide ethernet capability over a power line
ethernet over power (EOP) also called power-line communication (PLC). 500 megabits per second
How can we add devices to the network that is out of available addresses using IPV4?
Network Address Translation (NAT)
Configuring NAT on a SOHO device uses ______
Source NAT or PAT (Port Address Translation) - all internal devices are translated to a single external address
how to configure an internal device so it is accessible externally?
Port Forwarding / Destination NAT or Static NAT
____ Allows network devices to automatically configure and find other network devices. Applications on the internal network can open inbound ports
Universal Plug and Play (UPnP)
APIPA stands for…
Automatic Private IP Address
QoS (Quality of service) allows you to ____
gives control on network bandwidth by many different criteria
Link Layer Discovery Protocol (LLDP) and Universal Plug n Play (UPnP) help with _____
network device identification
Simple Network Management Protocol enables _______
querying of network devices how much bandwidth is going through a switch or what a routers firewall is filtering
The difference between a managed switch and an unmanaged switch is that the_____
managed switch includes the capability for an interface to control settings such as VLAN
if you plug devices into a switch and their not seeing each other there is a good chance ______
there is a VLAN issue
802.11a operates at _____ ghz with ___ MIMO streams and has a theoretical maximum throughput of _____
5ghz. n/a. 54 mbit/s (actual throughput is no more than 25 Mbps)
802.11b operates at ____ ghz with ___ MIMO streams and has a theoretical max throughput of _____ .
2.4ghz. n/a. 11 mbit/s (with actual througput averaging 4-6 Mbps)
802.11g operates at ____ ghz with ____ MIMO streams and has a theoretical max throughput of _____ mbit/s.
2.4ghz. n/a. 54 mbit/s
