Comparing WAN Links And Remote Access Methods

Question 1

Location that represents the end of the access providers network (and therefore their responsibility for maintaining it). The demarc point is usually at the minimum point of entry (MPOE). If routing equipment cannot be installed at this location demarc extension cabling may need to be laid

Answer 1

Demarcation point

Question 2

System was developed by Bell labs to allow multiple calls to be placed on a single cable. Each 64 Kbps channel provides enough bandwidth for a voice communication session and is known as a DS0 or a kilo stream link. Channels can be multiplexed over a leased line to provide more bandwidth (T1, T2, T3 and so on).

Answer 2

T-carrier

Question 3

Termination point for an access providers cabling, also referred to as the network interface unit (NIU).

Answer 3

Smartjack

Question 4

Appliance or WAN interface card providing connectivity to a digital circuit. The DSU encodes the signal from Data Terminal Equipment (DTE) a PBX router to a signal that can be transported over the cable. The CAU is used to perform diagnostic tests on the line

Answer 4

Channel service unit/data service unit (CSU/DSU)

Question 5

Carrier technology to implement broadband Internet access for subscribers by transferring data over voice-grade telephone lines. There are various flavors of DSL notably S(ymmetric)DSL, A(symmetric)DSL, and V(ery HIgh Bit Rate)DSL

Answer 5

Digital subscriber line (DSL)

Question 6

Cable internet access digital modem that uses a coaxial connection to the service providers fiber optic core network

Answer 6

Cable modem

Question 7

City wide fiber optic networks enabling carrier Ethernet virtual private networks and WAN links and full fiber Internet access

Answer 7

Metro-optical

Question 8

Technology based on DWDM to provision near fiber internet access solutions (FTTx-Fiber to the home , Fiber to the curb, etc.)

Answer 8

Passive optical network (PON)

Question 9

System of microwave transmissions where orbital satellites relay signals between terrestrial receivers or other orbital satellites. Satellite internet connectivity is enabled through a reception antenna connected to the PC or network through a DVB-S modem.

Answer 9

Satellite

Question 10

Secure tunnel created between two endpoints connected via an insecure transport network (typically the Internet)

Answer 10

Virtual private network (VPN)

Question 11

Dial up protocol working at layer 2 (Data Link) used to connect devices remotely to networks

Answer 11

Point to point Protocol (PPP)

Question 12

Tunneling protocol allowing the transmission of encapsulated frames or packets from different types of network protocol over an IP network

Answer 12

Generic routing encapsulation (GRE)

Question 13

VPN configuration where only traffic for the private network is routed by the VPN gateway

Answer 13

Split tunnel

Question 14

VPN configuration where all traffic is routed via the VPN gateway

Answer 14

Full tunnel

Question 15

Remote access took and protocol. VNC is the basis of macOS screen sharing.

Answer 15

Virtual Network Computing (VNC)

Question 16

Using features of HTML5 to implement Remote Desktop/VPN connections via browser software (clientless). Also called clientless VPN

Answer 16

HTML5 VPN or clientless VPN

Question 17

Appliance that incorporates advanced encryption and authentication methods in order to handle a large number of VPN tunnels, often in hub and spoke S2S VPN topologies

Answer 17

VPN headend

Question 18

Software based mechanism that allows VPNs to be built and deleted dynamically

Answer 18

Dynamic multipoint VPN (DMVPN)

Question 19

Network protocol suite used to secure data through authentication and encryption as the data travels across the network of the internet

Answer 19

Internet Protocol Security (IPSec)

Question 20

IPSec protocol that provides authentication for the origin of transmitted data as well as integrity and protection against replay attacks

Answer 20

Authentication header (AH)

Question 21

IPSec sub-protocol that enables encryption and authentication of the header and payload of a data packet

Answer 21

Encapsulating security payload (ESP)

Question 22

Framework for creating a security association (SA) used with IPSec. An SA establishes that two hosts trust one another (authenticate) and agree secure protocols and cipher suites to use to exchange data

Answer 22

Internet key exchange (IKE)

Question 23

Accessing the administrative interface of a network appliance using a separate network form the usual data network. This could use a separate VLAN or a different kind of link, such as a dial up modem.

Answer 23

Out of band management (OOB)