Which one of the following is a technical solution for the quality of service, speed, and security
problems facing the Internet?

A.
Random Early Detection (RED) queuing

B.
Multi-protocol label-switching (MPLS)

C.
Public Key Cryptography Standard (PKCS)

D.
Resource Reservation Protocol (RSVP)

Explanation:
The original answer to this question was RED however I think this is incorrect
because of this reason. Both Red and MPLS deal with qos/cos issues, there by increasing speed.
Mpls more so the RED. However I have not been able to find any documents that state RED is a

security implementation while MPLS is heavy used in the ISP VPN market. See this link for MPLS
security http://www.nwfusion.com/research/2001/0521feat2.html
Below are the link that are formation of the ration for this answer of B (MPLS)
Congestion avoidance algorithm in which a small percentage of packets are dropped when
congestion is detected and before the queue in question overflows completely
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/r12.htm
Multiprotocol Label Switching. Switching method that forwards IP traffic using a label. This label
instructs the routers and the switches in the network where to forward the packets based on
preestablished IP routing information http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/m12.htm
Resource Reservation Protocol. Protocol that supports the reservation of resources across an IP
network. Applications running on IP end systems can use RSVP to indicate to other nodes the
nature (bandwidth, jitter, maximum burst, and so on) of the packet streams they want to receive.
RSVP depends on IPv6. Also known as Resource Reservation Setup Protocol.
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/r12.htm
Random Early Detection (RED) is the recommended approach for queue congestion management
in routers (Braden et al., 1998). Although in its basic form RED can be implemented in a relatively
short C program, as the speed of ports and the number of queues per port increase, the
implementation moves more and more into hardware. Different vendors choose different ways to
implement and support RED in their silicon implementations. The degree of programmability, the
number of queues, the granularity among queues, and the calculation methods of the RED
parameters all vary from implementation to implementation. Some of these differences are
irrelevant to the behavior of the algorithm-and hence to the resulting network behavior. Some of
the differences, however, may result in a very different behavior of the RED algorithm-and hence
of the network efficiency.
http://www.cisco.com/en/US/products/hw/routers/ps167/products_white_paper09186a0080091fe4.
shtml
Based on label swapping, a single forwarding mechanism provides opportunities for new control
paradigms and applications. MPLS Label Forwarding is performed with a label lookup for an
incoming label, which is then swapped with the outgoing label and finally sent to the next hop.
Labels are imposed on the packets only once at the edge of the MPLS network and removed at
the other end. These labels are assigned to packets based on groupings or forwarding
equivalence classes (FECs). Packets belonging to the same FEC get similar treatment. The label
is added between the Layer 2 and the Layer 3 header (in a packet environment) or in the virtual
path identifier/virtual channel identifier (VPI/VCI) field (in ATM networks). The core network merely
reads labels, applies appropriate services, and forwards packets based on the labels. This MPLS
lookup and forwarding scheme offers the ability to explicitly control routing based on destination
and source addresses, allowing easier introduction of new IP services.
http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/xlsw_ds.htm