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CCIE Vocab
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it-skills
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. Defined in IEEE 802.1w - a specification to enhance the 802.1d standard to improve the speed of STP convergence.
enhanced editing
pulse code modulation
Rapid Spanning Tree Protocol
proxy ARP
2. A message that each host sends - either in response to a router Query message or on its own - to all multicast groups for which it would like to receive multicast traffic.
designated router (PIM)
IGMPv1 Host Membership Report
High Density Binary 3
CEF
3. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check. The FIB entry details the information needed for forwarding: the next-hop router and the outgoing interface - in an optimized mtrie stru
ATOMIC_AGGREGATE
optional nontransitive
Protocol Independent Multicast dense-mode routing protocol
Forwarding Information Base
4. In IP routing - a term referring to the building of IP routing tables by IP routing protocols.
DiffServ
control plane
AF
same-layer interaction
5. A name used for DS3 lines inside the European TDM hierarchy.
forwarding state
E3
EGP
Differentiated Services Code Point
6. Address Resolution Protocol. 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.
TCP flags
WFQ
Border Gateway Protocol
ARP
7. Ethernet process by which devices attached to the same cable negotiate their speed and the duplex settings over the cable.
enable secret
active mode FTP
auto-negotiation
CST
8. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.
EGP
Data Carrier Detect
anycast
Holddown timer
9. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ. WFQ schedules the currently lowest SN packet next.
VLAN
sequence number (WFQ)
transient multicast group
Maxage timer (STP)
10. A method of obtaining an IPv6 address that uses DHCPv6. See also stateless autoconfiguration.
shared distribution tree
stateful autoconfiguration
ORIGINATOR_ID
External BGP
11. In IP routing - a term referring to the process of forwarding packets through a router.
Rapid Spanning Tree Protocol
data plane
VRRP
6to4
12. 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.
MRTT
Distance Vector Multicast Routing Protocol
exceed
VPN label
13. Neighbor Solicitation.
E-LSR
Data Set Ready
Tc
NS
14. Low-latency queuing.
adjacent-layer interaction
subnet ID
CLP
LLQ
15. High Density Binary 3.
HDB3
Remote VLAN
confederation identifier
MPLS Experimental (EXP)
16. The initial 802.11 common key encryption mechanism; vulnerable to hackers.
Graft message
congestion window
Wired Equivalent Privacy
NSSA
17. Designated router.
distance vector
PE
DR
Per-Hop Behavior
18. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.
DS0
AGGREGATOR
Exterior Gateway Protocol
marking down
19. A predefined VC. A PVC can be equated to a leased line in concept.
optional transitive
overlapping VPN
permanent virtual circuit
TDM hierarchy
20. A feature of Ethernet NICs. When the NIC transmits an electrical signal - it "loops" the transmitted electrical current back onto the receive pair. By doing so - if another NIC transmits a frame at the same time - the NIC can detect the overlapping r
loopback circuitry
Digital Signal Level 3
ACE
MaxAge (OSPF)
21. An MPLS VPN term referring to an LSR that has no direct customer connections - meaning that the P router does not need any visibility into the VPN customer's IP address space.
network allocation vector
DTP
sequence number (WFQ)
provider router
22. A method of collecting traffic received on a switch port or a VLAN and sending it to specific destination ports on a switch other than the one on which it was received.
ROMMON
IGMPv1 Host Membership Query
RMON event
RSPAN
23. Defined in RFC 1631 - a method of translating IP addresses in headers with the goal of allowing multiple hosts to share single public IP addresses - thereby reducing IPv4 public address depletion.
SPF calculation
Modified Deficit Round-Robin
Network Address Translation
Superframe
24. Retransmission Timeout.
SLSM
link-state advertisement
AR access rate.
RTO
25. Weighted tail drop.
Digital Signal Level 0
radio management aggregation
WTD
peak information rate
26. The IPv6 protocol used for the discovery of which hosts are listening for which multicast IP addresses for IPv6.
Frame Relay Forum
classless routing
forwarding state
Multicast Listener Discovery
27. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.
dual stack
adjacent (OSPF)
upstream router
link-state database
28. A Cisco IOS queuing tool most notable for its scheduler - which always services the high-priority queue over all other queues.
priority queuing
CLUSTER_LIST
downstream router
feasibility condition
29. An exterior routing protocol that predates BGP. It is no longer used today.
shaping rate
Context-Based Access Control
AR access rate.
Exterior Gateway Protocol
30. Link Aggregation Control Protocol.
CIR
Garbage timer
LACP
Inside Global address
31. A term referring to the process of applying the Message Digest 5 (MD5) algorithm to a string - resulting in another value. The original string cannot be easily computed even when the hash is known - making this process a strong method for storing pas
MD5 hash
BOOTP
multicast MAC address
IEEE 802.1X
32. 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.
CGMP
Spanning Tree Protocol
sequence number (OSPF)
path attribute
33. Tag Distribution Protocol.
LFIB
virtual LAN
TDP
Ready To Send
34. The number of beacons that governs how often multicast frames are sent over a wireless LAN.
Loss of Frame
Bc bucket
DTIM interval
subnet zero
35. The RMON function of tracking a particular variable. RMON events trigger RMON alarms.
PAgP
RMON event
stateless autoconfiguration
Local Management Interface
36. A communication protocol between hosts and a multicast router by which routers learn of which multicast groups' packets need to be forwarded onto a LAN.
LOCAL_AS
internal DSCP
permanent virtual circuit
Internet Group Management Protocol
37. A Cisco switch feature that permits limiting traffic arriving at switch ports by percentage or absolute bandwidth. Separate thresholds are available per port for unicast - multicast - and broadcast traffic.
transmit power
storm control
Class of Service
point coordination function
38. Aka receiver's advertised window.
advertised window
Enhanced Local Management Interface
subnet ID
overloading
39. The data structure used by OSPF to hold LSAs.
OFDM
no drop
link-state database
authentication method
40. In Frame Relay - a link between a router and a Frame Relay switch.
access link
network layer reachability information
InARP
Multilink PPP
41. Differentiated Services.
Type of Service byte
stuck-in-active
Cisco Express Forwarding
DiffServ
42. Virtual LAN.
switched virtual circuit
VLAN
Control Plane Policing (CoPP)
DR election (OSPF)
43. Any OSPF neighbor for which the database flooding process has completed.
fully adjacent (OSPF)
link-state routing protocol
E3
Border Gateway Protocol
44. Point-to-Point Protocol over Ethernet. A convention often used as the data link protocol over Cable in which Ethernet is used as the data link protocol - but with PPP being encapsulated inside Ethernet. The combination gives the data link features of
gateway of last resort
RARP
PPPoE
priority queuing
45. EIGRP (and IGRP) allows for the use of bandwidth - load - delay - MTU - and link reliability; the K values refer to an integer constant that includes these five possible metric components. Only bandwidth and delay are used by default - to minimize re
K value
rendezvous point
MIB-II
tail drop
46. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local AS.
NO_EXPORT
U/L bit
Backward Explicit Congestion Notification
Measured Round-Trip Time
47. A type of logic for how a router uses a default route. When a default route exists - and the class A - B - or C network for the destination IP address does not exist in the routing table - the default route is used. If any part of that classful netwo
receiver's advertised window
active (EIGRP)
classful routing
Bipolar 8 Zero Substitution
48. A 3-bit field in an ISL header used for marking frames. Also - used generically to refer to either the ISL CoS field or the 802.1Q User Priority field.
Class of Service
quartet
Query (EIGRP)
queue starvation
49. A route that is used for forwarding packets when the packet does not match any more specific routes in the IP routing table.
ISL
BDR
upstream router
default route
50. An alternative software loaded into a Cisco router - used for low-level debugging and for password recovery.
VoFR
subnet number
request-to-send/clear-to-send
ROMMON
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