General Networking Skills Pre-Test

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1 / 20 Which end of a serial cable is responsible for physical clocking? A. DTC C. V.35 B. DCE D. HSSI

2 / 20 When was TCP/IP established? A. 1960's C. 1980's B. 1970's D. 1990's

3 / 20 In the IP protocol stack, which OSI layer does the Internet layer reference? A. 1 C. 3 B. 2 D. 4

4 / 20 Which of the following belongs at the IP transport layer? A. ICMP C. DNS B. UDP D. telnet

5 / 20 If our window size is 1, and you successfully receive my frame numbered 15, what would you ACK with? A. 1 C. 16 B. 15 D. 0

6 / 20 Which of the following is not an internet layer protocol? A. ICMP C. RARP B. ARP D. UDP

7 / 20 Which of the following applications performs a similar function as RARP? A. telnet C. DHCP B. FTP D. ARP

8 / 20 How long is an IP version 6 address? A. 32 bits C. 128 bits B.64 bits D. 256 bits

9 / 20 Which class of IP addresses is set aside for multicast? A. A C. C B. B D. D

10 / 20 By default, how many octets of a class B IP address are considered the network portion? A. 1 C. 3 B. 2 D. 4

11 / 20 Which of the following is a class B IP address? A. 97.115.211.14 C. 192.168.30.110 B. 126.128.151.19 D.151.47.209.65

12 / 20 Approximately how many IP hosts could exist on a non-subnetted class B IP network? A. 16.5 million C. 254 B. 65,534 D. 1

13 / 20 What does the term 'contiguous' refer to in reference to IP subnetting? A. there are an equal number of 1's and 0's in the subnet mask B. there is a random assortment of 1's and 0's in the subnet mask C. the number of 0's cannot exceed the number of 1's in the subnet mask D. going left to right in the subnet mask, once the 1's become 0's, the remaining bits are 0's

14 / 20 According to the contiguous subnet mask rule, which of the following is a legal IP subnet mask ? A. 255.255.0.255 C. 255.255.255.0 B. 255.0.255.255 D. 0.255.255.255

15 / 20 How many binary bits does the mask 248 represent for one octet? A. 5 C. 3 B. 4 D. 2

16 / 20 What is the subnet portion of 172.16.100.10 /24? A. 172.16.0.0 C. 172.16.100.10 B. 172.16.100.0 D. impossible to determine

17 / 20 How many hosts can live on the 172.16.100.0 /24 subnet? A. 256 C. 126 B. 254 D. 2

18 / 20 Which of the following IP subnet masks allows for up to 30 hosts per subnet? A. 255.255.255.0 C. 255.255.255.192 B. 255.255.255.128 D. 255.255.255.224

19 / 20 What are the two parts of a MAC address? A. IEEE assigned vendor code, vendor assigned serial number B. IEEE assigned network number, vendor assigned node number C. Vendor assigned network number, IEEE assigned node number D. IEEE assigned vendor code and serial number

20 / 20 Which of the following OSI layers are not considered upper layers? A. application C. session B. presentation D. network