# of queues required for the FIFO scheduler= # of queues required for the strict priority scheduler= # of queues required for the weighted round robin scheduler= 6.(8%) Fill in the attributes for the protocols represented in the table below 1 4 4 Attribute Access Technology ADSL Dial Up HFC PON Topology (point to point or multipoint) Point to point Point to point multipoint multipoint Asymmetric Service (YES or NO) YES YES YES YES Media type (TP or Coax or Fiber) TP TP Coax and Fiber Fiber Supports single play, double play, or triple play? double Single (double but not well) triple triple Name of the Device in the WAN that terminates the Access line DSLAM Circuit switch CMTS OLT Name of the Device in the customer location that terminates the Access line DSL modem Dial up modem Cable modem ONT TDC 460 Homework 02 7 of 9
TDC-460 Spring 2017 7.(8%) Fill in the attributes for the protocols represented in the table below Attribute Protocol X.25 Frame Relay ATM Carrier Ethernet OSI Layer number(s) Connection Type (CO vs Connectionless) Virtual Circuit vs Datagram switching Link Flow Control (YES or NO) Link Error Control (YES or NO) MAC support (YES or NO) Used in WAN or LAN ? Fixed or variable frame size? Guaranteed QoS support? (YES or NO) 8.An enterprise has the following UNI traffic profile SLA with a WAN data operatorCIR = 8000bps, CBS = 1000B, EIR = 1600bps, EBS = 500BTrTCM (Two rate, three color mode) policer is utilized on the ingress WAN switchAssume token bucket algorithmis used, bucket initially starts fullThree frames (frame #1, frame #2 and frame #3) arrive at the ingress port of the WAN switch. Frame #1 = 900B in size arrives at t=0 sec. Frame #2 = 400B in size arrives at t=0.25 sec. Frame #3 =1000B in size arrives at t=0.50 sec. a)(2%) what color does the policer mark frame #1 with and does it drop or forward it? Show your work. b)(2%) what color does the policer mark frame #2 with and does it drop it? Show your work.
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- Summer '15