The sample questions shown below are representative of the type of questions found in the portion
of the CCIE Service Provider written exam that covers specialty service topics. For examples of General
Knowledge type questions, see the Routing and Switching Sample Questions.
Service Provider Sample Questions
1. What is the purpose of Dual Ring Interconnect with D&C for SDH rings?
A.Protects signals against a node failure in a single ring
B. Protects signals when a ring switch fails
C. Protects signals when multiple span switches fail
D. Protects pre-emptible traffic from being dropped when a ring switch occurs
E. Protects signals against any combination of link failure in each ring
2. In optical transmission systems, chirped lasers are used for the purpose of:
A. Reducing the effect of polarization mode dispersion
B. Turning the laser to a specific ITU channel
C. Keeping the signal wavelength “locked” to a specific technology
D. Suppressing FWM and SBS non-linear effects
E. None of the above
3. For SONET ring switching, the 50ms switch time:
A. PIncludes the detection time
B. Applies to rings smaller than 1200km
C. Applies to rings smaller than 1000km
D. Includes up to 16 nodes
E. Includes up to 12 nodes
4. What layer of the TMN (telecommunications management network) model does CTM fit into?
A. Network management layer
B. Element management layer
C. Business management layer
D. Network element layer
5. Which two IOS commands are equivalents for putting a Cisco 7500 OC-12 RPR interface card into wrapped mode?
A. shutdown [a | b]
B. srp shutdown [a | b]
C. srp ips request manual-switched [a | b]
1. What is the effect of changing DMT interleaved delay from 3 milliseconds to
15 milliseconds?
A. Latency remains the same, but throughput is decreased.
B. Latency remains the same, but error correction effectives may also be
reduced.
C. Latency is increased, but faster error correction occurs.
D. Fewer ATM PVCs can be provisioned on DSL line.
2. What will significantly degrade DSL performance, regardless of DSL rate or
line length?
A. Microfilters installed between a telephone and shared line.
B. POTS splitters at the subscriber’s end of the DSL line
C. POTS splitters at the telco CO.
D. B & C.
E. None of the above
3. What is the effect of turning on all available downstream carrier tones in a
DMT DSL transmission systems?
A. Downstream RS error correction effectiveness is reduced.
B. The downstream line rate and throughput remains unchanged, but FEC
efficiency is reduced.
C. The upstream DSL bandwidth is reduced, since less carriers become
available for upstream traffic.
D. The downstream DSL bandwidth is increased.
4. ATM carries IP and PPP information with ATM cells. What ATM
adaptation Layer is used when an ATM cell carries IP packets and PPP
frames?
A. AAL1
B. AAL2
C. AAL3
D. AAL4
E. AAL5
5. An architecture that utilizes PPPoE deals with IP address allocation by what
type of negotiation?
A. NIS
B. IPCP
C. RADIUS
D. LDAP
E. DHCP
1. In a cable HFC plant, what is a modulator?
A. Set top box
B. Diplex filter
C. Local head end
D. Fiber node
2. Which statement is FALSE concerning the interleave depth value?
A. A higher interleave depth provides more protection from burst of noise
on the HFC network.
B. Higher interleave depth increase downstream latency.
C. Lower interleave depth cause some packet loss on typical HFC
networks
D. None of the above
3. Which statement is FALSE concerning Concatenation?
A. It allows ITCM to send multiple upstream packets in one single large
burst.
B. It reduces upstream data throughput.
C. It can be enabled/disabled from CMTS on per upstream port basis if
desired
D. Concatenation activity on an interface can be checked by the show
controller counters command.
4. During the modem boot process, how does the modem acquire the
downstream channel?
A. The modem is commanded by the CMTS to set to the specific channel.
B. The modem uses the default value in the broadcom chipset.
C. The modem tuner sets a level as defined by the DOCSIS specification.
D. The modem tuner scans the downstream spectrum until digital QAM
modulated signal is encountered.
5. What is true regarding Cisco Network Registrar in Cable networks?
A. It provides comprehensive Domain Name system
B. It provides DHCP administrative functionality
C. It provides TFTP server functionality.
D. All of the above are true.
1. What is the function of the A/B bits on DS1 using Extended Super Frame
(ESF)?
A. It is used for signaling on-hook and off-hook status.
B. It carries CRC information for error detection.
C. It is used for a control and performance information.
D. It is used for a frame’s synchronization and alignment.
2. Which of the following is true regarding Label Distribution Protocol (LDP)?
A. It is a label distribution protocol for MPLS.
B. It is a set of procedures and messages by which LSRs establish Label
Switch Paths (LSPs) through a network.
C. Tag distribution Protocol (TDP) was the basis for LDP.
D. All of the above are true.
3. Which of the following is reported in the LMI regular status polling?
A. Addition or Deletion of PVC.
B. PVC status (active or inactive).
C. Link integrity.
D. A & B only
E. A, B & C.
4. What is the statistical reserve?
A. A management channel on a trunk
B. Bandwidth that is reserved for SVCs to route over a trunk
C. Bandwidth that is reserved on a trunk so that ABR connections can
burst
D. Bandwidth on a trunk that is reserved for control traffic and cannot be
used by connections
E. Bandwidth that cannot be allocated to connections but can be used to
accommodate statistical variations in the traffic
5. What is the main difference between the information displayed on the
dspload and the dsptrkutl screens?
A. The dspload screen is for all trunks; the dsptrkutl screen is for one trunk.
B. The dspload screen shows the expected traffic; the dsptrkutl screen
shows actual traffice.
C. The information on the dspload screen never changes; the dsptrkutl
screen is dynamic
D. The dspload screen shows historical information; the dsptrkutl screen
shows current information.
1. What protocol does an IP phone use to learn the voice VLAN ID it should
use for voice traffic?
A. VTP
B. 802.1q
C. CDP
D. Skinny Station Protocol
E. LLQ
2. When gateways are registering with a gatekeeper, the gatekeeper can be:
A. On the same LAN
B. On the same subnet
C. On a remote LAN
D. In a different subnet
E. Any of the above
1. What is the relationship between the Domain Name System (DNS) and LDAP?
A. All the root DNS servers maintain information in a distributed LDAP tree.
B. DNS clients access DNS information by making LDAP queries to DNS servers.
C. An LDAP DN attribute is a Domain Name.
D. It is currently recommended to express DN as a sequence of Domain components.
E. All of the above.
2. How many content definitions does CSG allow?
A. 40
B. 400
C. 4000
D. 40,000
E. 400,000
3. In the Apache Web Server configuration, the command KeepAlive ON is used to:
A. Allow a CSS to probe the server
B. Allow a connection to be closed with a TCP RESET
C. Allow persistent connections
D. Allow the use of HTTP HEAD request
4. What method of streaming live video is the least taxing on bandwidth in a large enterprise environment?
A. TCP
B. UDP
C. HTTP
D. Multicast
E. FTP
1. What does UDLD stand for?
A. Unspecified Data Link Direction
B. UniDirectional Loop Detection
C. Unspecified Distribution Label Detection
D. Unified Distribution Label Direction
E. UniDirectional Link Detection
2. What is TCI?
A. Tag Calling Interface
B. Tag Control Identifier
C. ToS Class Interface
D. Tag Control Information
3. Which statements are true regarding VPLS? (check all)
A. There is a full mesh of pseudowires.
B. There is a partial mesh of pseudowires.
C. Only L2TPv3 can be used for pseudowire establishment.
D. STP runs in the core.
E. There is split-horizon to avoid loops.
4. What features set is most frequently used to prevent hackers from flooding a port with MAC-addresses?
A. BPDU Guard
B. 802.x
C. Port Security
D. St orm Control
E. Switch Port protected
5. What does FRTP stand for?
A. Frame Relay Top Pseudowire
B. Frame Relay Traffic Pseudowire
C. Frame Relay Traffic Protocol
D. Frame Relay Traffic Policing
E. None of the above.
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ANSWER KEY
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