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CCIE Vocab
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Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised to any other peer.
global routing prefix
Join/Prune message
VoFR
NO_ADVERT
2. Layer x PDU.
protocol data unit
LxPDU
conform
LOF
3. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive labeled packets from other LSRs and then forward the packets as unlabeled packets to CE routers.
CHAP
PIR
egress PE
exponential weighting constant
4. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.
WTD
MULTI_EXIT_DISC (MED)
LDP
multicast state information
5. Data Carrier Detect.
Differentiated Services Code Point
DCD
RMON event
E2 route (OSPF)
6. Jargon referring to any queue that receives priority service - often used for queues in an LLQ configuration that have the priority command configured.
RA
actual queue depth
Area Border Router
priority queue
7. Defined in RFC 2289 - a mechanism by which a shared key and a secret key together feed into a hash algorithm - creating a password that is transmitted over a network. Because the shared key is not reused - the hash value is only valid for that indivi
one-time password
DS1
mark probability denominator
Inform
8. A route that is created to represent one or more smaller component routes - typically in an effort to reduce the size of routing and topology tables.
LAPF
passive (EIGRP)
summary route
AES
9. Provider router.
stuck-in-active
enable secret
same-layer interaction
P router
10. The 802.1X driver that supplies a username/password prompt to the user and sends/receives the EAPoL messages.
Operation - Administration - and Maintenance
supplicant
Maximum Segment Size
weighted fair queuing
11. A vendor consortium that formerly worked to further Frame Relay common vendor standards.
fully adjacent (OSPF)
Frame Relay Forum
subnet broadcast address
Garbage timer
12. Defined in IEEE 802.1d - a protocol used on LAN bridges and switches to dynamically define a logical network topology that allows all devices to be reached - but prevents the formation of loops.
Class of Service
subnet zero
Spanning Tree Protocol
disabled state
13. Jargon referring to a policer action through which - instead of discarding an out-of-contract packet - the policer marks a different IPP or DSCP value - allowing the packet to continue on its way - but making the packet more likely to be discarded la
PVC
marking down
BGP decision process
VPN label
14. The innermost MPLS header in an packet traversing an MPLS VPN - with the label value identifying the forwarding details for the egress PE's VRF associated with that VPN.
VPN label
Link-State Acknowledgment
PPPoE
sparse-mode protocol
15. UniDirectional Link Detection.
DS0
differentiated tail drop
Point-to-Point Protocol
UDLD
16. Link Fragmentation and Interleaving.
LFI
reported distance
RARP
MPLS VPNs
17. Feasible distance.
HSRP
port security
FD
encapsulation
18. Rapid Spanning Tree Protocol.
Route Distinguisher
multipath
RSTP
OOF
19. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.
Tag Distribution Protocol
Outside Local address
Network Time Protocol
Out of Frame
20. A Frame Relay traffic shaping feature during which the shaping rate is reduced when the shaper notices congestion through the receipt of BECN or ForeSight messages.
Out of Frame
adaptive shaping
PIM-SM
peak information rate
21. An MPLS LSR that can forward and receive both labeled and unlabeled packets.
DR
PHB
edge LSR
Measured Round-Trip Time
22. When a Query is received from a router - each host randomly picks a time between 0 and the Maximum Response Time period to send a Report. When the host with the smallest time period first sends the Report - the rest of the hosts suppress their report
DSR
Discard Eligible
Report Suppression mechanism
AMI
23. A subset of a classful IP network - as defined by a subnet mask - which used to address IP hosts on the same Layer 2 network in much the same way as a classful network is used.
backup state
subnet
stuck-in-active
LSP segment
24. Protocol Independent Multicast sparse-mode routing protocol.
window
NO_ADVERT
adjacency (EIGRP)
PIM-SM
25. Extensible Authentication Protocol.
EAP
ACE
passive (EIGRP)
BSR
26. Class of Service.
CoS
route reflector client
label switched path
conform
27. An 802.1d STP transitory port state in which the port does not send or receive frames - and does not learn MAC addresses - but does wait for STP convergence and for CAM flushing by the switches in the network.
listening state
sequence number (OSPF)
going active
Alternate state
28. A name used for DS3 lines inside the European TDM hierarchy.
upstream router
E3
All OSPF DR Routers
Loop Guard
29. The SNMP specifications - standardized in RFCs - defining the rules by which SNMP MIB variables should be defined.
Label Forwarding Information Base
NCP
Structure of Management Information
variance
30. 16 bits between the interface ID and global routing prefix in an IPv6 global address - used for subnet assignment inside an enterprise.
overloading
stateful autoconfiguration
subnet ID
LSA flooding
31. A single label and link that is part of a complete LDP. See also label switched path.
Inverse ARP
adjacent (OSPF)
LSP segment
Inside Global address
32. Orthogonal frequency division multiplexing.
classful routing
mark probability denominator
Digital Signal Level 1
OFDM
33. A configuration tool in Cisco IOS that allows basic programming logic to be applied to a set of items. Often used for decisions about what routes to redistribute - and for setting particular characteristics of those routes
Garbage timer
route map
adaptive shaping
mark probability denominator
34. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.
PIM-SM
Rapid Per-VLAN Spanning Tree Plus
LOS
limiting query scope (EIGRP)
35. An IPv6/IPv4 tunneling method that is designed for transporting IPv6 packets within a site where a native IPv6 infrastructures is not available.
AS_SEQUENCE
ISATAP
Goodbye (EIGRP)
SMI
36. A mechanism used by TCP senders to limit the dynamic window for a TCP connection - to reduce the sending rate when packet loss occurs. The sender considers both the advertised window size and CWND - using the smaller of the two.
congestion window
Enhanced Local Management Interface
Hello timer
routed interface
37. Defined in IEEE 802.1w - a specification to enhance the 802.1d standard to improve the speed of STP convergence.
Service Interworking
subnet
Rapid Spanning Tree Protocol
Class Selector
38. In MPLS VPNs - a 64-bit Extended Community path attribute attached to a BGP route for the purpose of controlling into which VRFs the route is added.
control plane
Route Target
DTR
discarding state
39. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.
Outside Local address
Address Resolution Protocol
synchronization
receiver's advertised window
40. A state for a route in an EIGRP topology table that indicates that the router is actively sending Query messages for this route - attempting to validate and learn the current best route to that subnet.
active (EIGRP)
exceed
Database Description
MaxAge (OSPF)
41. An MPLS data structure used for forwarding labeled packets. The LFIB lists the incoming label - which is compared to the incoming packet's label - along with forwarding instructions for the packet.
external route
Label Forwarding Information Base
AS_PATH access list
WFQ
42. After a host receives an IGMP Query - the amount of time (default - 10 seconds) the host has to send the IGMP Report.
Data Carrier Detect
confederation ASN
Maximum Response Time
CoS
43. Class-Based Weighted Fair Queuing.
LSA
CBWFQ
ToS byte
All OSPF Routers
44. A protocol - defined in RFC 2865 - that defines how to perform authentication between an authenticator (for example - a router) and an authentication server that holds a list of usernames and passwords.
AMI
input event
RADIUS
RTS/CTS
45. The encapsulation of EAP messages directly inside LAN frames. This encapsulation is used between the supplicant and the authenticator.
DSSS
aggregatable global unicast address
EAP over LAN
dual-rate - three-color policer
46. Also called VLAN trunking - a method (using either the Cisco ISL protocol or the IEEE 802.1Q protocol) to support carrying traffic between switches for multiple VLANs that have members on more than one switch.
DS0
IGMPv1 Host Membership Report
Data Carrier Detect
trunking
47. A type of OSPF NSSA area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes can be injected into a totally NSSA area.
LFI
MDRR
totally NSSA area
designated port
48. 64 bits at the end of an IPv6 global address - used to uniquely identify each host in a subnet.
interface ID
Backward Explicit Congestion Notification
access link
LLQ
49. Network Address Translation-Protocol Translation.
man-in-the-middle attack
Virtual Routing and Forwarding table
stub network (OSPF)
NAT-PT
50. An 802.1d STP port state in which the port does not send or receive frames - except for listening for received Hello BPDUs.
LOF
blocking state
partial SPF calculation
encoding
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