Saturday, 25 June 2011
Free CCNA Practice Stuff Packet Tracer Activities Practice Questions For CCNA Exam
1: Your junior network administrator asks what type of frame relay encapsulation should be
used for your branch office, which contains 25 routers: 15 are Cisco 2611s, 5 are Cisco
3640s, and 5 are a mix of other vendors. What do you tell her?
A. Cisco
B. Q.333a
C. IETF
D. ANSI
2: What function does a frame relay DLCI provide with respect to a router and a frame relay
switch?
A. Defines the signaling standard between a router and the frame relay switch
B. Identifies the signaling between a router and the destination router
C. Identifies the circuit between a router and the frame relay switch
D. Identifies the encapsulation used between two routers
3: What is the default Local Management Interface (LMI) frame type used by a Cisco router?
A. ANSI
B. Cisco
C. IETF
D. Q.933a
E. Modified cut-through
4: You are required to troubleshoot the WAN link between the Acme, Inc., main office in
Baltimore and the Acme, Inc., remote office in Taiwan. A Cisco router that was providing
frame relay connectivity at the Taiwan site is replaced with a different vendor's frame relay
router. Connectivity is now down between the Baltimore and Taiwan site, but you can still
get to the Phoenix remote site using frame relay. What is the most likely cause of the
problem?
A. Mismatched LMI types
B. Incorrect DLCI
C. No authentication
D. Incorrect IP address mapping
5: You are having routing table issues because of RIP running over your frame relay
connections. Your router is not updating other remote sites as a result of split-horizon
issues. What can you do to alleviate this problem?
A. Create frame relay maps
B. Configure frame relay proxies
C. Configure LMI to update the router
D. Create sub-interfaces on the interface the updates come in on
6: Frame relay is an ITU-T and ANSI standard that defines the process of sending data over a
______________.
A. Packet-switched line
B. B. Circuit-switched line
C. C. Leased-line
D. D. Local area network
7: Frame relay primarily encapsulates information from the upper layers of the OSI Model at
the ___________ layer.
A. Application
B. Transport
C. Session
D. Data-link
E. Physical
8: Which of the following is the signaling standard between the router device and the frame
relay switch that is responsible for managing the connection and maintaining the status
between the devices?
A. DLCI
B. LMI
C. PVC
D. IETF
9: In which frame relay topology do all routers have virtual circuits to all other destinations?
A. Star
B. Hub and spoke
C. Bus
D. Partial mesh
E. Full mesh
10: The nonbroadcast multi-access nature of frame relay causes issues with what routing loop
preventative mechanism?
A. Route poisoning
B. Hold-down timers
C. Triggered updates
D. Split-horizon
11: If you are unable to support Inverse ARP to map DLCIs to network layer addresses, what
method do you need to use?
A. Static routes
B. Static maps
C. DHCP
D. LMI mapping
12: Which of the following commands configures a static map of the remote IP address
172.16.12.2 to the DLCI of 100?
A. Frame relay map dlci 100 ip 172.16.12.2
B. Frame relay rarp ip 172.16.12.2 100
C. Frame relay lmi dlci 172.16.12.2 100 broadcast
D. Frame relay map ip 172.16.12.2 100 broadcast
13: Which of the following commands gives you the current frame relay map entries?
A. Show ip frame
B. Show ip route
C. Show frame relay map
D. Show ip interfaces brief
14: What are issues to consider if you turn off split-horizon in a frame relay environment?
(Choose two.)
A. You cannot turn off split-horizon on an IP network.
B. Routing updates can no longer get through.
C. Not all Layer 3 protocols allow you to disable split-horizon.
D. You can open up your network to routing loops.
15: When you are setting up frame relay for point-to-point sub-interfaces, which of the following
must not be configured?
A. The frame relay encapsulation on the physical interface
B. The local DLCI on each sub-interface
C. An IP address on the physical interface
D. The sub-interface type as point-to-point
16: The frame relay circuit illustrated in the figure below is experiencing congestion. Which of
the following techniques could be used to help alleviate the congestion and notify the
routers? (Choose three.)
A. FECN
B. BECN
C. DE bit
D. LMI
E. CIR
17: Which frame relay mechanism is responsible for transmitting keepalives to ensure that the
PVC does not shut down because of inactivity?
A. LMI
B. BECN
C. FECN
D. DLCI
18: You are the network administrator of a frame relay network topology that consists of a
high-speed (1.544Mbps) connection at the central site and low-speed (64Kbps) connections
at the branch sites. Because of the speed mismatch, a bottleneck often exists for traffic on a
virtual circuit when the central site tries to communicate with the branch offices. What can
you do to resolve this issue without spending more money?
A. Use a slower link at the branch offices
B. Use a faster link at the branch offices
C. Use frame relay traffic shaping
D. Use more PVCs
19: Your junior network administrator asks you what the CIR is with regard to frame relay. What
do you tell her?
A. It's the value that specifies the maximum average data rate that the network
undertakes to deliver under "normal conditions."
B. It's a 10-bit number in the address field of the frame relay frame header that
identifies the VC.
C. It's a method of dynamically associating the remote router network layer
address with a local DLCI.
D. It's a signaling standard between the router (DTE device) and the local frame
relay switch (DCE device).
20: You are the network administrator for a medium-size corporation with eight branch offices.
Each office is running frame relay to your central site and is running connections to the
other offices for a full mesh topology. You are told that you have just added two new branchoffices that need to be fully meshed. How many total PVCs must you have in your full mesh?
A. 10
B. 20
C. 25
D. 45
Solutions :
1. C
2. C
3. B
4. A
5. D
6. A
7. D
8. B
9. E
10. D
11. B
12. D
13. C
14. C,D
15. C
16. A,B,C
17. A
18. C
19. A
20. D
