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Question No. 1

Which two statements about transparent bridging operations are true? (Choose two.)

• A. A bridge builds its MAC address table dynamically using the spanning-tree protocol.
• B. A bridge operates at the data link layer.
• C. A bridge sends unknown unicast frames out on all ports except the incoming port.
• D. A bridge forwards traffic based on the destination IP address.
• E. All the ports on the bridge belong to the same collision domain.

Question No. 2

Given these four Class B networks: 172.104.0.0, 172.105.0.0, 172.106.0.0, 172.107.0.0, what is the supernet (CIDR) address that summarizes these four Class B networks?

• A. 172.104.0.0/12
• B. 172.104.0.0/13
• C. 172.104.0.0/14
• D. 172.104.0.0/15

Question No. 3

What is the Cisco recommended way to secure SNMPv2 community strings?

• A. Configure complex community string names and avoid using default settings
• B. Create multiple read/write strings to keep the attacker guessing
• C. Use access-lists to limit the amount of access to the community strings
• D. Use SNMPv3 to limit the amount of memory overhead

Question No. 4

With IPv6, for which purpose are router solicitation and router advertisement used?

• A. Routing protocol updates
• B. Routing protocol neighbor peerings
• C. Router and prefix discovery
• D. Layer 3 to Layer 2 address resolution (similar to IPv4 ARP)

Question No. 5

Which two statements about Packet over SONET are true? (Choose two.)

• A. POS is a Layer 2 technology that uses PPP in ATM encapsulation and SONET framing.
• B. The Layer 2 frame is encapsulated into a generic HDLC header (not Cisco proprietary HDLC) and placed into the appropriate SONET Payload Envelope.
• C. The FCS field can be set to 16 bits on one end and 32 bits on the other end of a POS connection without causing any connectivity issues.
• D. The Cisco POS interface supports Cisco HDLC and PPP encapsulation.
• E. POS can be used in a point-to-point or point-to-multipoint environment.

Question No. 6

This show output is from the S7 Cisco Metro Switch and the PE7 Cisco ASR 9000 Series Router. Which configuration change(s) is/are needed to bring the S7 FastEthernet 0/2 interface into the up/up state?

S7#show cdp neighbors

Device ID Local Intrfce Holdtme Capability Platform Port IDPE7 Fas 0/2 163 R ASR9K Ser Gig 0/0/0/0S78 Fas 0/23 146 S I ME-3400E- Fas 0/21S8 Fas 0/21 178 S I ME-3400E- Fas 0/21 *Mar 20 21:28:02.177: %ETHCNTR-3-HALF_DUX_COLLISION_EXCEED_THRESHOLD: Collisions at FastEthernet0/2 exceed threshold. Considered as loop-back.*Mar 20 21:28:02.177: %PM-4-ERR_DISABLE: loopback error detected on Fa0/2, putting Fa0/2 in err-disable state*Mar 20 21:28:03.184: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to down S7#show interface fa0/2FastEthernet0/2 is down, line protocol is down (err-disabled) Hardware is Fast Ethernet, address is e8ba.70b5.6c04 (bia e8ba.70b5.6c04) MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Half-duplex, 10Mb/s, media type is 10/100BaseTX input flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:40, output 00:00:00, output hang never Last clearing of “show interface” counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 484423 packets input, 39349929 bytes, 0 no buffer Received 484423 broadcasts (167203 multicasts) 0 runts, 0 giants, 0 throttles 1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 167203 multicast, 0 pause input 0 input packets with dribble condition detected 972398 packets output, 128931949 bytes, 0 underruns 0 output errors, 46 collisions, 4 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped out RP/0/RSP0/CPU0:PE7#show interfaces gi0/0/0/0GigabitEthernet0/0/0/0 is down, line protocol is down Interface state transitions: 4 Hardware is GigabitEthernet, address is 4055.392f.40a8 (bia 4055.392f.40a8) Internet address is 192.168.107.70/24 MTU 1514 bytes, BW 100000 Kbit (Max: 100000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Full-duplex, 100Mb/s, THD, link type is force-up output flow control is off, input flow control is off loopback not set, ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:35 Last clearing of “show interface” counters never 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 972551 packets input, 128953765 bytes, 729 total input drops 172486 drops for unrecognized upper-level protocol Received 0 broadcast packets, 800781 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 484545 packets output, 39360900 bytes, 0 total output drops Output 317283 broadcast packets, 167262 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 4 carrier transitions

• A. Enable loopback line on the S7 Fa0/2 interface then shut and no shut the Fa0/2 interface.
• B. Enable duplex half on the PE7 Gi0/0/0/0 interface then shut and no shut the Fa0/2 interface on S7.
• C. Change S7 Fa0/2 interface to duplex full and speed 100 then shut and no shut the Fa0/2 interface.
• D. Just need to no shut the Fa0/2 interface on S7.
• E. Just need to shut and no shut the Fa0/2 interface on S7.

Question No. 7

Refer to the exhibit.

R1 and R2 are running RIPv1 for the 10.0.0.0 and 192.168.1.0 networks. No default or static routes have been configured on the routers. Which two statements about this topology are true? (Choose two.)

• A. R1 summarizes the 10.1.1.0/24 subnet to 10.0.0.0/8 when it sends its RIPv1 routing updates to R2. R2 summarizes the 10.2.2.0/24 subnet to 10.0.0.0/8 when it sends its RIPv1 routing updates to R1.
• B. To support this topology, R1 and R2 must be configured so that RIPv1 auto-summary is disabled.
• C. R1 sends information about the 10.1.1.0/24 subnet when it sends its RIPv1 routing updates to R2. R2 sends information about the 10.2.2.0/24 subnet when it sends its RIPv1 routing updates to R1. Example of RIPv1 update from R1 to R2:RIP: build update entriesnetwork 10.1.1.0/24 metric 1
• D. Hosts on the 10.1.1.0/24 subnet are unable to communicate with hosts on the 10.2.2.0/24 subnet.
• E. R1 accepts the 10.2.2.0/24 RIPv1 routing updates from R2 and installs the 10.2.2.0/24 route in its routing table. R2 accepts the 10.1.1.0/24 RIPv1 routing updates from R1 and installs the 10.1.1.0/24 route in its routing table.