DsmbISP Chapter 4 - CCNA Discovery: Working at a Small-to-Medium Business or ISP - Version 4.1 2013

1:30 PM  ,  


1


Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
The default gateway is on a different subnet from the host.

2


Refer to the exhibit. Which range of IP addresses would allow hosts that are connected to the Router1 Fa0/0 interface to access outside networks?
192.168.1.0 through 192.168.1.95
192.168.1.66 through 192.168.1.94
192.168.1.66 through 192.168.1.96
192.168.1.0 through 192.168.1.127
192.168.1.66 through 192.168.1.128

3
What is the range of the first octet in a Class B address?
127 to 191
127 to 192
128 to 191
128 to 192

4
Which two statements describe classful IP addresses? (Choose two.)
It is possible to determine which class an address belongs to by reading the first bit.
The number of bits used to identify the hosts is fixed by the class of the network.
Only Class A addresses can be represented by high-order bits 100.
Up to 24 bits can make up the host portion of a Class C address.
All subnets in a network are the same size.
Three of the five classes of addresses are reserved for multicasts and experimental use.

5
Which IPv4 class provides the highest number of host addresses per network?
Class A
Class B
Class C
Class D
Class E

6
Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below.
11110010
11011011
11110110
11100111
11100101
11101110

7
Which IPv4 class of addresses provides the most networks?
Class A
Class B
Class C
Class D
Class E

8
How many usable hosts are available given a Class C IP address with the default subnet mask?
254
255
256
510
511
512

9
A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?
Configure static NAT for all ten users.
Configure dynamic NAT for ten users.
Configure dynamic NAT with overload.
Configure DHCP and static NAT.

10
IPv6 increases the IP address size from 32 bits to how many bits?
64
96
128
192
256
512

11


Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 inside network. HostA has sent a request to the web server. What is the destination IP address of the return packet from the web server?
10.1.1.2
172.30.20.1
172.30.20.10
192.168.1.1

12
What is the network broadcast address for a Class C address of 192.168.32.0 with the default subnet mask?
192.168.0.0
192.168.0.255
192.168.32.0
192.168.32.254
192.168.32.255

13
In an 8 bit binary number, what is the total number of combinations of the eight bits?
128
254
255
256
512
1024

14
Which statement accurately describes public IP addresses?
Public addresses cannot be used within a private network.
Public IP addresses must be unique across the entire Internet.
Public addresses can be duplicated only within a local network.
Public IP addresses are only required to be unique within the local network.
Network administrators are free to select any public addresses to use for network devices that access the Internet.


15
Static NAT works by mapping a specific inside local IP address to what other specific address type?
inside global
outside local
outside global
private IP address