Here are the answers to Friday's practice questions!
CCNA:
Which of the following commands places a loopback interface with the IP address 1.1.1.1 into OSPF Area 5, while placing no other IP address into that area?
A. network 1.1.1.1 255.255.255.255 area 5
B. network 1.1.1.1 0.0.0.0 area 5
C. area 5 network 1.1.1.1 255.255.255.255
D. area 5 network 1.1.1.1 0.0.0.0
E. network 1.0.0.0 0.255.255.255 area 5
Answer: B. Remember, with OSPF we use wildcards masks, not subnet masks.
CCNP / BSCI:
Which statements are accurate regarding RIPv1 and RIPv2?
A. RIPv2 supports MD5 routing update authentication.
B. RIPv1 supports MD5 routing update authentication.
C. RIPv2 supports clear-text routing update authentication.
D. RIPv2 supports clear-text routing update authentication.
Answer: A, C. RIPv2 supports both MD5 and clear-text routing update authentication, while RIPv1 supports neither.
CCNP / BCMSN:
A unicast frame enters a switch port. The destination is known to the switch, and the destination is located off the same port as the source. What term best describes the action the switch will take regarding such a frame?
A. unicast
B. multicast
C. broadcast
D. filtered
E. flooded
Answer: D. Such a frame will be filtered - dropped entirely by the switch and forwarded out no ports.
CCNP / BCRAN
Short answer: What command will test an ISDN configuration without sending pings?
Answer: An often overlooked command, isdn call interface will do this. To tear the test connection down, use isdn disconnect interface. Both commands and their output are shown below.
R1#isdn call interface bri0 8358662
03:54:43: BR0 DDR: Attempting to dial 83586620
3:54:43: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
03:54:44: BR0:1 DDR: dialer protocol up
03:54:45: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to up
03:54:49: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8358662 R2
To tear the test call down correctly, use isdn disconnect interface.
R1#isdn disconnect interface bri 0 ?
all Disconnect the data call(s) on all b channels
b1 Disconnect the data call on b1 channel
b2 Disconnect the data call on b2 channel
R1#isdn disconnect interface bri 0 all
03:58:36: BR0:1 DDR: disconnecting call
03:58:36: BR0:2 DDR: disconnecting call
03:58:36: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 8358662 R2, cll lasted 20 seconds
03:58:36: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
03:58:36: BR0:1 DDR: disconnecting call
03:58:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down
To your Cisco certification success,
Chris Bryant
CCIE #12933
www.thebryantadvantage.com
CCNA:
Which of the following commands places a loopback interface with the IP address 1.1.1.1 into OSPF Area 5, while placing no other IP address into that area?
A. network 1.1.1.1 255.255.255.255 area 5
B. network 1.1.1.1 0.0.0.0 area 5
C. area 5 network 1.1.1.1 255.255.255.255
D. area 5 network 1.1.1.1 0.0.0.0
E. network 1.0.0.0 0.255.255.255 area 5
Answer: B. Remember, with OSPF we use wildcards masks, not subnet masks.
CCNP / BSCI:
Which statements are accurate regarding RIPv1 and RIPv2?
A. RIPv2 supports MD5 routing update authentication.
B. RIPv1 supports MD5 routing update authentication.
C. RIPv2 supports clear-text routing update authentication.
D. RIPv2 supports clear-text routing update authentication.
Answer: A, C. RIPv2 supports both MD5 and clear-text routing update authentication, while RIPv1 supports neither.
CCNP / BCMSN:
A unicast frame enters a switch port. The destination is known to the switch, and the destination is located off the same port as the source. What term best describes the action the switch will take regarding such a frame?
A. unicast
B. multicast
C. broadcast
D. filtered
E. flooded
Answer: D. Such a frame will be filtered - dropped entirely by the switch and forwarded out no ports.
CCNP / BCRAN
Short answer: What command will test an ISDN configuration without sending pings?
Answer: An often overlooked command, isdn call interface will do this. To tear the test connection down, use isdn disconnect interface. Both commands and their output are shown below.
R1#isdn call interface bri0 8358662
03:54:43: BR0 DDR: Attempting to dial 83586620
3:54:43: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
03:54:44: BR0:1 DDR: dialer protocol up
03:54:45: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to up
03:54:49: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8358662 R2
To tear the test call down correctly, use isdn disconnect interface.
R1#isdn disconnect interface bri 0 ?
all Disconnect the data call(s) on all b channels
b1 Disconnect the data call on b1 channel
b2 Disconnect the data call on b2 channel
R1#isdn disconnect interface bri 0 all
03:58:36: BR0:1 DDR: disconnecting call
03:58:36: BR0:2 DDR: disconnecting call
03:58:36: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 8358662 R2, cll lasted 20 seconds
03:58:36: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
03:58:36: BR0:1 DDR: disconnecting call
03:58:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to down
To your Cisco certification success,
Chris Bryant
CCIE #12933
www.thebryantadvantage.com
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