A happy Friday to all! Here are the answers to Thursday's CCNA, CCNP, and Network+ exam questions!
CCNA:
Short answer: Convert the decimal 2109 into hexadecimal.
Answer: I put this question in here because I've found that most of my students have no trouble with hex > decimal conversion, but decimal > hex conversion can be a little confusing.
Here's the way I approach this question. Obviously, 2109 is larger than 256, so what do we get when we divide 2109 by 256? Eight, with a remainder of 61. That means we have eight units of 256; so far the answer begins with 8.
The next hex unit down is 16. How many units of 16 do we have in 61? Three, with a remainder of 13. So far our hex value is "83".
13 obviously has 13 units of one; the hex character for the decimal 13 is d. (a = 10, b = 11, c = 12, d = 13, e = 14, f = 15). That gives us the final hex value "83d", meaning we have eight units of 256, three units of 16, and 13 units of 1. Does that work out?
8 x 256 = 2048
3 x 16 = 48
13 x 1 = 13
2048 + 48 + 13 = 2109
Sure does! :)
Network+ :
Which of the following terms does NOT describe TCP?
A. allows windowing
B. guaranteed delivery
C. does not use three-way handshake
D. best-effort delivery
E. uses sequence numbers
F. does not use sequence numbers
Answer: C, D, F. TCP does indeed allow windowing, does give guaranteed delivery, does use the three-way handshake, and uses sequence numbers.
CCNP / BSCI:
By default, how many EIGRP hellos have to be missed in order for an adjacency to be declared dead?
A. One
B. Two
C. Three
D. Four
E. Five
F. Six
Answer: C. Three missed hellos mean the EIGRP adjacency will be torn down.
CCNP / BCMSN:
A switch port has just received a dynamic VLAN membership assignment. What other port feature will be enabled as a result?
A. Uplinkfast
B. Portfast
C. Backbonefast
D. VTP
E. Port security
F. Dot1X port-based authentication
Answer: B. Yes, it's our old friend portfast!
CCNP / BCRAN:Short answer: What's the default value of the dialer idle-timeout command?
Answer: 120 seconds. When you change this value, make sure to do so in seconds, not minutes.
CCNP / CIT:
Short answer: The STP timers are set to their defaults on an assumption that the switched network is no more than how many switches in diameter?
Answer: Seven.
See you later this afternoon with at least one brand-new set of Cisco CCNA, CCNP, and Network+ exam questions!
To your certification exam success,
Chris Bryant
CCIE #12933
www.thebryantadvantage.com
CCNA:
Short answer: Convert the decimal 2109 into hexadecimal.
Answer: I put this question in here because I've found that most of my students have no trouble with hex > decimal conversion, but decimal > hex conversion can be a little confusing.
Here's the way I approach this question. Obviously, 2109 is larger than 256, so what do we get when we divide 2109 by 256? Eight, with a remainder of 61. That means we have eight units of 256; so far the answer begins with 8.
The next hex unit down is 16. How many units of 16 do we have in 61? Three, with a remainder of 13. So far our hex value is "83".
13 obviously has 13 units of one; the hex character for the decimal 13 is d. (a = 10, b = 11, c = 12, d = 13, e = 14, f = 15). That gives us the final hex value "83d", meaning we have eight units of 256, three units of 16, and 13 units of 1. Does that work out?
8 x 256 = 2048
3 x 16 = 48
13 x 1 = 13
2048 + 48 + 13 = 2109
Sure does! :)
Network+ :
Which of the following terms does NOT describe TCP?
A. allows windowing
B. guaranteed delivery
C. does not use three-way handshake
D. best-effort delivery
E. uses sequence numbers
F. does not use sequence numbers
Answer: C, D, F. TCP does indeed allow windowing, does give guaranteed delivery, does use the three-way handshake, and uses sequence numbers.
CCNP / BSCI:
By default, how many EIGRP hellos have to be missed in order for an adjacency to be declared dead?
A. One
B. Two
C. Three
D. Four
E. Five
F. Six
Answer: C. Three missed hellos mean the EIGRP adjacency will be torn down.
CCNP / BCMSN:
A switch port has just received a dynamic VLAN membership assignment. What other port feature will be enabled as a result?
A. Uplinkfast
B. Portfast
C. Backbonefast
D. VTP
E. Port security
F. Dot1X port-based authentication
Answer: B. Yes, it's our old friend portfast!
CCNP / BCRAN:Short answer: What's the default value of the dialer idle-timeout command?
Answer: 120 seconds. When you change this value, make sure to do so in seconds, not minutes.
CCNP / CIT:
Short answer: The STP timers are set to their defaults on an assumption that the switched network is no more than how many switches in diameter?
Answer: Seven.
See you later this afternoon with at least one brand-new set of Cisco CCNA, CCNP, and Network+ exam questions!
To your certification exam success,
Chris Bryant
CCIE #12933
www.thebryantadvantage.com
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