40: What is a disadvantage of using a connection-oriented protocol such as TCP?

A. Packet acknowledgment might add overhead.

B. Packets are not tagged with sequence numbers.

C. Loss or duplication of data packets is more likely to occur.

D. The application layer must assume responsibility for the correct sequencing of the data packets.
 
41: You are a network technician at Acme, Inc. You have subnetted the 192.168.72.0 network with a /30 mask for connections between your routers. Your boss asks you how many usable subnetworks and usable host addresses per subnet this will provide. What should you tell her, assuming your router cannot use ip subnet-zero?

A. 62 networks and 2 hosts

B. 6 networks and 30 hosts

C. 8 networks and 32 hosts

D. 16 networks and 16 hosts

E. 14 networks and 14 hosts
 
42: Which of the following IP addresses are considered "network" addresses with a /26 prefix? (Choose two.)

A. 165.203.2.0

B. 165.203.5.192

C. 165.203.6.63

D. 165.203.6.191

E. 165.203.8.255
 
43: Identify three valid hosts in any subnet of 192.168.32.0, assuming the subnet mask used is 255.255.255.240. (Choose three.)

A. 192.168.32.33

B. 192.168.32.112

C. 192.168.32.119

D. 192.168.32.126

E. 192.168.32.175

F. 192.168.32.208
 
44: A Class C network address has been subnetted with a /27 mask. Which of the following addresses is a broadcast address for one of the resulting subnets?

A. 198.57.78.33

B. 198.57.78.64

C. 198.57.78.97

D. 198.57.78.97

E. 198.57.78.159

F. 198.57.78.254
 
45: What is the subnetwork address for a host with IP address 165.100.5.68/28?

A. 165.100.5.0

B. 165.100.5.32

C. 165.100.5.64

D. 165.100.5.65

E. 165.100.5.31

F. 165.100.5.1
 
46: Your boss wants to know what TCP stands for. What do you tell him?

A. Transmission Check Protocol

B. Transport Check Protocol

C. Transmission Control Protocol

D. Transport Control Protocol
 
47: Your boss wants to know what UDP stands for. What do you tell him?

A. Unreliable Data Protocol

B. Unreliable Data Program

C. User-Defined Protocol

D. User Datagram Protocol
 
48: Which of the following statements accurately describes UDP?

A. UDP copies files between a computer and a system running rshd, the remote shell service (daemon).

B. UDP is a member of the TCP/IP suite of protocols that governs the exchange of electronic mail between message transfer agents.

C. UDP is a member of the TCP/IP suite of protocols and is used to copy files between two computers on the Internet. Both computers must support their respective roles: one must be a client, and the other a server.

D. UDP is a TCP complement that offers a connectionless datagram service guaranteeing neither delivery nor correct sequencing of delivered packets (much like IP).
 
49: Which of the following host addresses are members of networks that can be routed across the public Internet? (Choose three.)

A. 10.20.12.64

B. 172.16.32.129

C. 172.64.32.34

D. 192.168.23.252

E. 196.104.12.95

F. 214.192.48.254
 
50: You are connecting your Serial 0/1 interface to the Internet. Which of the following need to be done for the connection to work? (Choose two.)

A. Assign a public IP address.

B. Use the shutdown command.

C. Use the no shutdown command.

D. Make sure the interface is running in full-duplex.

（2）Basic IOS Configuration

1: In which of the following modes in Cisco's IOS can you issue show commands? (Choose two.)

A. User

B. Privileged

C. Line Configuration

D. Global Configuration
 
2: Yo u are the network administrator for a large corporation. You want to be able to store all your configurations in a centralized location. Which of these servers will allow you to do so? (Choose two.)

A. FTP

B. TFTP

C. SQL

D. Oracle
 
3: You need to troubleshoot your network IP connectivity. Which of the following commands would you use to find the IP address on your Ethernet 0 interface?

A. ping

B. IPConfig

C. traceroute

D. Show interface Ethernet 0
 
4: Which command would you use at the CLI in User mode to enter Privileged EXEC mode?

A. Privilege

B. Admin

C. Enable

D. Disable
 
5: You have just received 14 Catalyst switches for your network. You would like to install these switches into your production network to provide separate collision domains for each of the connected devices. What configuration is required to provide this functionality?

A. No configuration is required.

B. You must set up an IP address on the switch.

C. You must configure unique VLANs on the switches.

D. You must install the Cisco IOS.
 
6: Which of the following prompts indicates your router is in Privileged EXEC mode?

A. Router>

B. Router#

C. Router&

D. Router$
 
7: You have made a console connection to your Cisco Catalyst switch and you see the > symbol in HyperTerminal. What does it mean?

A. You are in Privileged EXEC mode.

B. You are in User EXEC mode.

C. The switch has not been configured.

D. The switch is in need of repairs.
 
8: You would like to assign a meaningful name to your Catalyst switch. What command should you use?

A. enable

B. host name

C. hostname

D. name
 
9: You need to assign an IP address to your Catalyst 2950 switch. You are at the HQ_SW1> prompt. What is the correct series of commands? (cr = carriage return)

A. enable <cr> ip address 10.1.1.1

B. enable <cr> ip address 10.1.1.1 255.255.255.0

C. enable <cr> configure terminal <cr> ip address 10.1.1.1 255.255.255.0

D. enable <cr> configure terminal <cr> interface vlan 1 <cr> ip address 10.1.1.1 255.255.255.0
 
10: Which of the following commands displays the syntax for the clock command?

A. cl?

B. clock?

C. clock ?

D. cl ?

11: Which of the following commands allows you to configure a welcoming message whenever you log in to a router?

A. Router(config)# banner message

B. Router(config)# banner motd &

C. Router# banner motd #

D. Router# banner message !