Computer Tutorials
Earn Money From Internet
Cheap Freelancers
Ask An Expert
Register Cheap Domain
Data Recovery
Best Mutual Funds
Trading Forex Online
Cheap Web Hosting
Ajax Tutorials
Cheap Cell Phone Plans
Free Mobile Learning
Job Portal
Photoshop Tutorials
Cheap Jewelry
Cheapest Air Travel
B. Routed protocol are used to send user data. Protocols like IP and IPX C. Routing protocols are used to send user data. Protocols like IP and IPX
D. Routing protocols are used to update routes about internetwork information
Answer: B, D Routed protocols are used for sending packet with data between routers. Routing protocols like RIP and
IGRP are used to update routers about internetwork information i.e. routes to destinations
Chapter: 2
75. What is the valid range of hosts for IP address 172.16.0.17 with a subnet mask of 255.255.255.240?
A. 172.16.0.16-32 B. 172.16.0.17-32
C. 172.16.0.17-31
D. 172.16.0.17-30
Answer: D
172.16.0.16 is the first subnet (256-240=16), with no bits turned on in the third octet for subnetting. There are
only 4 bits for hosts. If all the hosts bits are off, the fourth octet would be 16, which is the first subnet and not valid as a host. If all host bits are on, the forth octet would be 31, and is the broadcast address for network
16. The valid hosts would then be the numbers in between all zero's and all 1's or 17-30.
Chapter: 2
76. You have a class B network with a 10-bit subnet mask, what are the valid hosts?
(Choose two)
A. 172.16.0.65-127 B. 172.16.0.65-126
C. 172.16.255.1-62
D. 172.16.255.1-63 Answer: B, C
For the first answer, there is no subnet bits turned on in the third octet and one subnet bit turned on in the
forth octet. That gives you a 0.64 subnet address. There are 6 hosts bits. If they are all turned off, the forth octet will be 64, which is the subnet address. If the host bits are all turn on, the forth octet will be 127, which
is the broadcast address for subnet 64. The valid hosts are then 65-126. For the second answer, if you turn on all subnet bits on the third octet and no subnet bits on the forth octet, that leaves you with a 255.0 subnet.
There are 6 hosts bits. If they are all turn off, the host bits would be 0. If they are all turn on, the host bits
would be 63, which is the broadcast address for that subnet. The valid hosts are then 1-62.
Chapter: 2
77. Which of the following are valid ways of assigning an IP address to an interface?
A. config t, ip address 172.16.10.1 mask 255.255.255.0 B. config t, int t0, 172.16.10.1 255.255.255.0
C. config t, int e0, ip address 172.16.10.1 mask 255.255.255.0