Network Fundamentals - WANs Flashcards
A network that connects two or more LANs and enables them to communicate
Wide Area Network (WAN)
Switching equipment and cabling that is operated by a service provider and rented for a monthly fee by a company
Leased Line
Internet access types normally used by consumers
Digital Subscriber Line (DSL) and Cable Internet
The most popularly-used Layer 2 protocols used on leased-line serial links
High Level Data Control (HDLC) and Point-to-Point Protocol (PPP)
One of the standards used for Ethernet WAN links
Ethernet over MPLS (EoMPLS)
Another name for Ethernet over MPLS (EoMPLS)
Ethernet emulation
Predefined speeds for leased-line links
Fast links: Multiples of 1.5 Mbps
Slow links: Multiples of 64 Kbps
An internal or external interface used by a router to connect to serial links
Channel Service Unit/Data Service Unit (CSU/DSU)
Cables used to connect a router with an external CSU/DSU
Data Terminal Equipment (DTE) cables
Cable needed to create a physical WAN link in a lab; also provides the “clocking” function on the link
Data Communications Equipment (DCE) cables
The data-link protocol used by Cisco routers on serial links
High Level Data Control (HDLC)
The added header field in Cisco’s proprietary version of HDLC
The “Type” field
