(Introduction to Networks)
1 Refer to the exhibit.

The network administrator enters these commands into the R1 router:
R1# copy running-config tftp
Address or name of remote host [ ]?
When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?
192.168.11.252

2 Which three statements characterize the transport layer protocols? (Choose three.)
TCP and UDP port numbers are used by application layer protocols.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.


3 What is the purpose of ICMP messages?
to provide feedback of IP packet transmissions

4 A technician uses the ping 127.0.0.1 command. What is the technician testing?
the TCP/IP stack on a network host

5 What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?
It forwards the frame out of all ports except for the port at which the frame was received.


6 What is a characteristic of the LLC sublayer?
It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.

7
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
VLAN 1

8
A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
the amount of traffic that is currently crossing the network
the type of traffic that is crossing the network
the latency that is created by the number of network devices that the data is crossing

9
When applied to a router, which command would help mitigate brute-force password attacks against the router?
login block-for 60 attempts 5 within 60

10
Which two statements correctly describe a router memory type and its contents? (Choose two.)
ROM is nonvolatile and contains basic diagnostic software.
RAM is volatile and stores the IP routing table.


11
Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)
wireless NIC
wireless client software

12 Launch PT – Hide and Save PT
Open the PT activity. Perform the tasks in the activity instructions and then fill in the blank.
The Server0 message is . ”   winner   ”

13
A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)
applying security settings to control the flow of data
notifying other devices when errors occur
regenerating data signals

14
16
Which address on a PC does not change, even if the PC is moved to a different network?
MAC address
17
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
18
A host PC has just booted and is attempting to lease an address through DHCP. Which two messages will the client typically broadcast on the network? (Choose two.)
DHCPREQUEST
DHCPDISCOVER
19

Refer to the exhibit. An administrator wants to change the name of a brand new switch, using the hostname command as shown. What prompt will display after the command is issued?
Switch(config)#

20
After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?
The new configuration will be loaded if the switch is restarted.

21.Refer to the exhibit.A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received?
306
22
Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?
NAT
 23 What is the purpose of the routing process?
to select the paths that are used to direct traffic to destination networks

  24 Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
audio conference, financial transactions, web page
25
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
DSL
 26
Which connection provides a secure CLI session with encryption to a Cisco switch?
an SSH connection

27 What is the purpose of the network security accounting function?
to keep track of the actions of a user

28

Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode?
linevtyin

29
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?
Request for Comments
  30 A PC is configured to obtain an IP address automatically from network 192.168.1.0/24. The network administrator issues the arp –a command and notices an entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. Which statement describes this entry?
This is a static map entry.
31 Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26

32
A particular website does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page?
ipconfig /displaydns

33 Which type of wireless security generates dynamic encryption keys each time a client associates with an AP?
WPA
34
A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame?
to check the frame for possible transmission errors

35

Refer to the exhibit. Which IP addressing scheme should be changed?
Site 2

36
What is the effect of configuring the ipv6 unicast-routing command on a router?
to enable the router as an IPv6 router
37
Which three IP addresses are private ? (Choose three.)
10.1.1.1
172.16.4.4
192.168.5.5

38
Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.

39 During normal operation, from which location do most Cisco switches and routers run the IOS?
RAM

40
What is an important function of the physical layer of the OSI model?
It encodes frames into electrical, optical, or radio wave signals.

41
Which procedure is used to reduce the effect of crosstalk in copper cables?
twisting opposing circuit wire pairs together
 42
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
detection of errors through CRC calculations
delimiting groups of bits into frames
data link layer addressing
43
What method is used to manage contention-based access on a wireless network?
CSMA/CA
44
What happens when part of an Internet radio transmission is not delivered to the destination?
The transmission continues without the missing portion.

45
What is the auto-MDIX feature on a switch?
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
46
Which function is provided by TCP?
detection of missing packets
47
How does a Layer 3 switch differ from a Layer 2 switch?
An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.

48
Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)
/68
/64
49
What is the purpose of having a converged network?
to reduce the cost of deploying and maintaining the communication infrastructure
50

Refer to the exhibit. A ping to PC3 is issued from PC0, PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?
just PC0 and PC1 MAC addresses
51
Which field in an IPv4 packet header will typically stay the same during its transmission?
Destination Address
52
What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.)
default administrator password
broadcast SSID

53
Which parameter does the router use to choose the path to the destination when there are multiple routes available?
the lower metric value that is associated with the destination network
54

Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?
An asterisk designates that the file system has at least one file that uses that file system.
The asterisk designates which file system is the default file system.
An asterisk indicates that the file system is bootable.
The asterisk shows which file system was used to boot the system.

55

56
Fill in the blank.
During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a    ”  multicast    ”    message.

57
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to interrupt the ping process
58

Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown?
area C

59

60

61
In which default order will a router search for startup configuration information?
NVRAM, TFTP, setup mode

62
Launch PT – Hide and Save PT
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which IPv6 address is assigned to the Serial0/0/0 interface on RT2?
2001:db8:abc:5::1

63
What is contained in the trailer of a data-link frame?
error detection*