Business Data Networks and Security

Business Data Networks and Security, 9e (Panko)
Chapter 9 TCP/IP Internetworking II

1) In IP subnet planning, having a large subnet part allows more hosts per subnet.
Answer: FALSE

2) When the subnet part is made larger, the host part must be smaller.
Answer: TRUE

3) If your subnet part is 8 bits long, you can have ________ subnets.
A) 64
B) 128
C) 256
D) None of the above
Answer: D

4) In IP subnet planning, you need to have at least 130 subnets. How large should your subnet part be?
A) 6
B) 7
C) 8
D) None of the above
Answer: B

5) Your firm has an 8-bit network part and an 8-bit subnet part. How many hosts can you have?
A) 8
B) 16
C) 254
D) 65,534
Answer: D

6) You have a 20-bit network part and a 4-bit subnet part. How many hosts can you have per subnet?
A) 14
B) 16
C) 256
D) None of the above
Answer: D

7) ________ is the processing of presenting external IP addresses that are different from internal IP addresses used within the firm.
A) DNS
B) NAT
C) DHCP
D) None of the above
Answer: B

8) In NAT, the ________ creates new external source IP addresses and port numbers.
A) router
B) firewall
C) source host
D) destination host
Answer: B

9) NAT operates transparently to the two hosts.
Answer: TRUE

10) NAT provides security.
Answer: TRUE

11) NAT enhances security by preventing ________.
A) sniffers from learning internal IP addresses
B) encryption
C) Both A and B
D) Neither A nor B
Answer: A

12) NAT can multiply the number of IP addresses available to the firm by over a thousand.
Answer: TRUE

13) Private IP address ranges are only used within a firm.
Answer: TRUE

14) Which of the following can be used within a firm?
A) Private IP addresses.
B) Public IP addresses.
C) Both A and B
D) Neither A nor B
Answer: C

15) Which of the following is a private IP address range?
A) 10.x.x.x.
B) 128.171.x.x.
C) Both A and B
D) Neither A nor B
Answer: A

16) Which of the