B. 255.255.255.192

C. 255.255.255.224

D. 255.255.255.240

E. 255.255.255.248
 
18: Which of these protocols provides data transport, relying on the error correction capabilities of the application itself?

A. UDP

B. TCP

C. SNMP

D. ICMP
 
19: Which of the following are used by TCP to ensure reliable delivery of data? (Choose two.)

A. MAC address resolution

B. Sequence numbers

C. Acknowledgments

D. Ping

E. Routing updates
 
20: You discover that you are able to adjust the window size of the TCP segment. You increase the window size to test the results. What will you observe happening on your network?

A. Increased throughput

B. Decreased throughput

C. Increased latency

D. Decreased reliability

21: Your organization is using the 192.168.1.0/24 address space. You need 28 subnets. What subnet mask would you use to create these subnets?

A. 255.255.255.0

B. 255.255.255.128

C. 255.255.255.192

D. 255.255.255.224

E. 255.255.255.240

F. 255.255.255.248
 
22: Which of the following protocols maps IP addresses to MAC addresses for connectivity to occur between two hosts?

A. ARP

B. RARP

C. SLARP

D. DHCP
 
23: Your junior network administrator cannot seem to ping a host in another network and asks you why it isn't working. Which of the following is not an answer that you would give him?

A. The host's default gateway is down.

B. The destination host is not powered on.

C. The IP address of the router interface is incorrect.

D. The IP address of the switch to which the destination host connects is incorrect.

E. The host is in a different subnet.
 
24: Which of the following classes of IP addresses is utilized for multicasting?

A. Class A

B. Class B

C. Class C

D. Class D