QUESTION 1 Which of the following statements are true?
A. Load sharing of VLAN traffic over parallel ISL trunks is not possible.
B. Load sharing of VLAN traffic over parallel ISL trunks is configurable
on a per VLAN basis.
C. Load sharing of VLAN traffic over parallel ISL trunks is configurable
on a per packet basis.
D. Load sharing of VLAN traffic over parallel ISL trunks is automatic. Answer:
B
QUESTION 2 You are a technician at Cisco Sources. You tell your newly appointed Cisco Sources
trainee about EIGRP. Your trainee now wants to know
what the term 'Feasibility Condition' means in EIGRP.
What would your reply be?
A. The Feasible Distance must be equal to one.
B. The Feasible Distance must be higher than one.
C. The Reported Distance must be equal to Feasible Distance.
D. The Reported Distance must be higher than Feasible Distance.
E. The Reported Distance must be lower than Feasible Distance. Answer: E
Explanation: Feasible Condition is met when the receiving
router has a Feasible Distance (FD) to a particular
network and it receives an update from a neighbor
with a lower advertised or Reported Distance (RD)
to that network. The neighbor then becomes a Feasible
Successor (FS) for that route because it is one hop
closer to the destination network. There may be a
number of Feasible Successors in a meshed network
environment. The RD for a neighbor to reach a particular
network must always be less than the FD for the local
router to reach that same network. In this way EIGRP
avoids routing loops. This is why routes that have
RD larger than the FD are not entered into the Topology
table. Reference: Ravi Malhotra, IP Routing, Chapter
4: Enhanced Interior Gateway Routing Protocol (EIGRP),
O'Reilly Press, January 2002 (ISBN 0-596-00275-0)
QUESTION 3 You are the network administrator at Cisco Sources. The Cisco Sources network
is running OSPF demand circuit across an ISDN link.
With regard to this circuit, which of the following
statements are true? Select Two
A. OSPF demand circuit requires network type non-broadcast.
B. OSPF demand circuit will not trigger the link if an OSPF interface goes
down.
C. The calling router must be network type point-to-point.
D. OSPF demand circuit will
bring up the link if the topology of the network changes. Answer: C, D Explanation: Point-to-Point or Point-To-Multipoint Using the OSPF
demand circuit options, which suppresses Hello and
LSA refresh functions, OSPF can establish a demand
link to form an adjacency and perform initial database
synchronization. The adjacency remains active even after Layer 2 of the demand circuit goes down. Unlike the OSPF demand
circuit feature, flooding reduction is usually configured
on leased lines. Flooding reduction uses same technique
as demand circuits to suppress the periodic LSA refresh.
When an OSPF demand circuit is configured on a link,
the periodic OSPF Hellos are suppressed. Periodic
Hellos are suppressed only on a point-to-point and
point-to-multipoint network type. On any other network type, OSPF Hellos are still sent over the interface.
There are only two scenarios where the periodic LSA
refresh occurs when using the OSPF demand circuit
feature:
- If there is a change in network topology
- If there is a router in
the OSPF domain that can not understand demand circuits
In the first case, not much can be done to stop
the LSA refresh because the router has to send the
new LSA information to update the neighbor about
the topology change. http://www.cisco.com/en/US/tech/tk365/tk480/technologies_tech_note09186a0080094a8f.shtml
QUESTION 4 You are a technician at Cisco Sources. The Cisco Sources network is a PIMv2
Sparse Mode network. Your newly appointed Cisco Sources
trainee wants to know what is used to calculate the
"incoming interface" for a (*, G) mroute entry on
this network. What would your reply be?
A. The address of the Mapping Agent.
B. The address of a directory connected member of group "G".
C. The address of the currently active Rendezvous Point for group "G".
D. The address of the PIM neighbor that send the PIM (*, G) Join message.
E. The address of the PIM neighbor that send the PIM (*, G) Hello message. Answer: C Reference:
CCIE Professional Development Routing TCP/IP
Volume II by Jeff Doyle and Jennifer De Haven Carroll. Page 492.
QUESTION 5 You are the network administrator at Cisco Sources. You configure a VLAN
Access Control List with the entries shown in the
following exhibit: Existing ACEs in the VACL: set
security acl ip Control_Access permit host 10.1.1.100
set security acl ip Control_Access deny 10.1.1.0 255.255.255.0
set security acl ip Control_Access permit host 172.16.84.99
set security acl ip Control_Access deny 172.16.84.0
255.255.255.128 Additional ACEs to the VACL: set security
acl ip Control_Access permit host 172.16.82.3 set
security acl ip Control_Access deny host 172.17.10.44
set security acl ip Control_Access permit host 192.168.99.150
set security acl ip Control_Access deny host 192.168.250.1
How many total mask value entries are required in
the Ternary Content Addressable Memory (TCAM) table?
A. 2 B. 3
C. 4
D. 6
E. 8 Answer: B Explanation Ternary CAM (TCAM) is a hardware piece of memory designed for rapid table
lookups by the ACL engine on the PFC and PFC2. The ACL
engine performs ACL lookups based on packets passing
through the switch's hardware. The result of the ACL
engine lookup into the TCAM determines how the switch
handles a packet. For example, the packet might be permitted
or denied. The TCAM has a limited number of entries
that are populated with mask values and pattern values.
For a detailed discussion on TCAM refer the link below.
Link to the white paper. Sub topic Ternary CAM. Reference:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_white_
paper09186a00800c9470.shtml
QUESTION 6 You are the network administrator at Cisco Sources. The Cisco Sources network
has a Catalyst 6500 with a Supervisor IA with a
MSFC. For some reason, the MSFC has lost its boot
image. The device is now in Rommon. You want to
load c6msfc-boot-mz.121-7a-E1-bin. What method can
you use?
A. Xmodem
B. FTP
C. TFTP
D. SNMP
E. FLASH Answer: A Explanation: The Catalyst 6000 Supervisor I and II modules have an onboard Flash file
system that can handle several image files. In addition to this Flash, they also have a PCMCIA Flash slot. These
Supervisors run their software from RAM and do not need their Flash system once correctly booted up. If an
image is then corrupted or deleted, the standard upgrade procedure is always possible as long as the Supervisor
is running a valid image. If the Supervisor is not booting up because there is no valid image to boot from
the Rommon, you will have to use the recovery procedure.
- Booting
from a PCMCIA Flash Card
-
Console Download using Xmodem In this situation option 2 is the only choice, since the MSFC has lost
its boot image. Refer to the link below for a detailed discussion of recovery procedures for Catalyst Switches. Reference:
- http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_
note09186a00800949c3.shtml#cat6k
QUESTION 7 You are the network administrator at Cisco Sources. The Cisco Sources network
is shown in the following exhibit: Your newly appointed Cisco Sources trainee wants to know what the minimum
configuration would be required for the DHCP client
to acquire a DHCP address upon boot. What would
your reply be?
A. Enable the command "ip helper-address 10.1.1.100" under the S0 interface
on Router CK2.
B. Enable the command "ip helper-address 10.1.1.100" under the S0 interface
on Router CK1.
C. Enable the command "ip helper-address 10.1.1.100" under the E0 interface
on Router CK1.
D. Enable the command "ip helper-address 255.255.255.255" under the E0 interface
on Router CK1.
E. Enable the command "ip helper-address 255.255.255.255" under the S0 interface
on Router CK2. Answer: C
QUESTION 8 With respect to the operation of Unidirectional Link Detection, which of
the following statements are true? (Choose all that apply.)
A. It negotiates the Unidirectional Link Detection link state during physical
signaling.
B. Both devices on the link do not need to support Unidirectional Link Detection.
C. It works by exchanging protocol packets between the neighboring devices.
D. It performs tasks that auto negotiation cannot perform. Answer: C, D Reference:
http://www.cisco.com/warp/public/473/77.html
QUESTION 9 You are the network administrator at Cisco Sources. You are troubleshooting
a problem with the serial0 interface on one of the
Cisco Sources routers. When the interface is brought
up, it works for a short time before it goes down.
You issue the show interface command. The output
form the command is shown in the following exhibit:
r1#sh in Serial0 is up, line protocol is up Hardware
is HD64570 MTU 1500 bytes, BW 1544 Kbit, DLY 20000,
rely 255/255, load 1/255 Encapsulation FRAME-RELAY,
loopback not set, Keepalive set (35 sec) LMI enq
sent 7, LMI stat recvd 7, LMI upd recvd 0, DTE LMI
up LMI enq recvd 0, LMI stat sent 0, LMI upd sent
0 LMI DLCI 0 LMI type is ANSI Annex D frame relay
DTE FR SVC disabled, LAPF stat down Broadcast queue
0/64, broadcasts sent/dropped 2/0, interface broadcast
0 Last input 00:00:30, output 00:00:30, output hang never Last clearing of
"show interface" counters never Queuing strategy:
FIFO Output queue 0/40, 0 drops; input queue 0/75,
0 drops 5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1 packets
input, 24 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 4 packets output, 608 bytes, 0 underruns 0 output errors, 0 collisions, 4 interface resets 0 output buffer failures, 0 output buffers swapped out 2 carrier transitions
DCD=up
DSR=up DTR=up RTS=up CTS=up Serial 0/2 is down,
line protocol is down Hardware is HD64570 Internet
address is 172.16.1.2/24 MTU 1500 bytes, BW 1544
Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation
FRAME-RELAY Serial 0/3 is down, line protocol is
down Hardware is HD64570 Internet address is 171.16.2.1/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely
255/255, load 1/255 Encapsulation FRAME-RELAY What
is the probable cause of this problem?
A. The encapsulation type is set to Frame-Relay.
B. The Frame-Relay lmi-type is set incorrectly.
C. Too many sub-interfaces are exceeding IDB limits.
D. The DCD not set correctly for a Frame-Relay circuit.
E. Keepalives are not set correctly on both ends. Answer: B Explanation: While troubleshooting Serial line problems, show
interface serial command comes handy. A CCIE candidate
should know what to look for, and where to look
for, to make quick deductions as to what is causing
the problem. In this case the counters for LMI sent
is increasing while the counters for LMI rcvd is
still 0. This clearly indicates a case of misconfigured
LMI type. For a detailed discussion on how to troubleshoot
serial lines, refer the link below. http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1915.htm#xtocid195571
QUESTION 10 You are the network administrator at Cisco Sources. Cisco Sources has an ATM
network. Which of the following statements are with
regard to Traffic contract, Traffic shaping, and
Traffic policing in the Cisco Sources network?
A. Traffic contract, Traffic shaping, and Traffic policing are parameters
of PNNI set during PNNI configuration.
B. Traffic contract, Traffic shaping, and Traffic policing are QoS features.
C. Traffic contract, Traffic shaping, and Traffic policing are types of SVCs.
D. Traffic contract, Traffic shaping, and Traffic policing are types of PVCs.
E. Traffic contract, Traffic shaping, and Traffic policing are used to control
traffic flows. Answer: B Explanation Traffic Shaping, Policing, and Contract are all forms of QoS.
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