Final Exam
POP Characteristics IMAP Characteristics
(P) does not require a centralized backup solution [P] mail is deleted as it is downloaded [P] desirable for an ISP or large business [I] downloads copies of email messages to the client [I] original messages must be manually deleted [I] requires a larger amount of disk space
Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)
-/64 -/68
Which three IP addresses are private? (Choose three.)
-10.172.168.1 172.32.5.2 192.167.10.10 -172.20.4.4 -192.168.5.254 224.6.6.6
Which three IP addresses are private ? (Choose three.)
-10.20.30.1 172.32.5.2 192.167.10.10 -172.30.5.3 -192.168.5.5 224.6.6.6
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
-DHCP -DNS -FTP
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.)
-DHCPDISCOVER -DHCPREQUEST
Which two protocols function at the internet layer?(Choose two.)
-ICMP -IP
Which two components are configured via software in order for a PC to participate in a network environment? (Choose two.)
-IP address -subnet mask
What are two features of ARP? (Choose two.)
-If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. -If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)
-It eliminates most address configuration errors. -It reduces the burden on network support staff.
What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.)
-broadcast SSID -default administrator password
What are two examples of the cut-through switching method? (Choose two.)
-fast-forward switching -fragment-free switching
Which two statements describe the functions or characteristics of ROM in a router? (Choose two.)
-maintains instructions for POST diagnostics -stores bootstrap program
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.)
-regenerating data signals -applying security settings to control the flow of data -notifying other devices when errors occur
A network technician is measuring the transfer of bits across the company backbone for a mission critical application. The technician 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
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
In a network that uses IPv4, what prefix would best fit a subnet containing 100 hosts?
/25
Consider the following range of addresses: 2001:0DB8:BC15:00:A0:0000:: 2001:0DB8:BC15:00:A1:0000:: 2001:0DB8:BC15:00:A2:0000:: 2001:0DB8:BC15:00:AF:0000:: The prefix-length for the range of addresses is
/60 (fill in the blank)
A network administrator is variably subnetting a given block of IPv4 addresses. Which combination of network addresses and prefix lengths will make the most efficient use of addresses when the need is for 2 subnets capable of supporting 10 hosts and 1 subnet that can support 6 hosts?
10.1.1.128/28 10.1.1.144/28 10.1.1.160/29
What is the binary representation of 0xCA?
11001010
Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?
127.0.0.1
Refer to the exhibit. What is the maximum TTL value that is used to reach the destination www.cisco.com?
13
Refer to the exhibit. What is the maximum TTL value that is used to reach the destination www.cisco.com??
13
How many bits make up the single IPv6 hextet :10CD:?
16
Refer to the exhibit. An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?
172.16.19.255
A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)
192.168.1.16/28 -192.168.1.64/27 192.168.1.128/27 -192.168.1.96/28 192.168.1.192/28
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26
Refer to the exhibit. The network administrator enters these commands into the R1 router: R1# copy runningconfig 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?
192.168.9.254 192.168.10.1 192.168.10.2 -192.168.11.252- 192.168.11.254
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:000 0:AB00:0000:00 00:0000:1234?
2001:DB8:0:AB0 0::1234
What is the subnet address for the address 2001:DB8:BC15:A:12 AB::1/64?
2001:DB8:BC15::0 --2001:DB8:BC15:A::0 2001:DB8:BC15:A:1::1 2001:DB8:BC15:A:1 2::0
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.1101001 1?
203.0.113.211
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
How many additional bits should be borrowed from a /26 subnet mask in order to create subnets for WAN links that need only 2 useable addresses?
4
Which statement describes a characteristic of the Cisco router management ports?
A console port is not used for packet forwarding.
Which statement is true about an interface that is configured with the IPv6 address command?
A link-local IPv6 address is automatically configured on the interface.
A network administrator is enabling services on a newly installed server. Which two statements describe how services are used on a server? (Choose two.)
A port is considered to be open when it has an active server application that is assigned to it. Server security can be improved by closing ports that are associated with unused services.
What are three characteristics of multicast transmission? (Choose three.)
A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.
What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?
ARP, broadcast
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.
Refer to the exhibit. The administrator configured the access to the console and the vty lines of a router. Which conclusion can be drawn from this configuration?
Because the IOS includes the login command on the vty lines by default, access to the device via Telnet will require authentication.
What must be configured to enable Cisco Express Forwarding (CEF) on most Cisco devices that perform Layer 3 switching?
CEF is enabled by default, so no configuration is necessary.
What method is used to manage contention-based access on a wireless network?
CSMA/CA
Which keys act as a hot key combination that is used to interrupt an IOS process?
Ctrl-Shift-6
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
A small business 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
Which statement is true regarding the UDP client process during a session with a server?
Datagrams that arrive in a different order than that in which they were sent are not placed in order.
What is contained in the trailer of a data-link frame?
Error Detection
Which group of IPv6 addresses cannot be allocated as a host source address?
FF00::/8
Which destination address is used in an ARP request frame?
FFFF.FFFF.FFFF
Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)
Fiber-optic cabling does not conduct electricity. Fiber-optic cabling is primarily used as backbone cabling.
Refer to the exhibit. From which location did this?
Flash Memory
What is the correct order for PDU encapsulation?
Frame Header - Network Header -Transport Header -Data Frame Trailer
What field content is used by ICMPv6 to determine that a packet has expired?
Hop Limit Field
A user gets an IP address of 192.168.0.1 from the company network administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?
ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.
What function does pressing the Tab key have when entering a command in IOS?
It completes the remainder of a partially typed word in a command.
Which statement describes the sequence of processes executed by a router when it receives a packet from a host to be delivered to a host on another network?
It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward to the destination host.
What is an important function of the physical layer of the OSI model?
It encodes frames into electrical, optical, or radio wave signals.
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.
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.
Which characteristics describe fiber optic cable? (Choose two.)
It is not affected by EMI or RFI. It is the most expensive type of LAN cabling
What are two features of a physical, star network topology? (Choose two.)
It is straightforward to troubleshoot. It is easy to add and remove end devices.
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.
What is a characteristic of the LLC sublayer?
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
An administrator issued the service passwordencryption command to apply encryption to the passwords configured for enable password, vty, and console lines. What will be the consequences if the administrator later issues the no service password encryption command?
It will not reverse any encryption.
Which statement describes a characteristic of the network layer in the OSI model?
Its protocols specify the packet structure and processing used to carry the data from one host to another.
Which address on a PC does not change, even if the PC is moved to a different network?
MAC Address
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 ______ message.
Multicast
Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?
NAT
In which default order will a router search for startup configuration information?
NVRAM, TFTP, setup mode
Refer to the exhibit. Which action will be successful? (image of PC1-Switch-PC2)
PC2 can send a ping to 192.168.1.1.
What types of addresses make up the majority of addresses within the /8 block IPv4 bit space?
Public addresses
During normal operation, from which location do most Cisco routers run the IOS?
RAM
During normal operation, from which location do most Cisco switches and routers run the IOS?
RAM
Which two statements correctly describe a router memory type and its contents? (Choose two.)
RAM is volatile and stores the running configuration. ROM is nonvolatile and stores bootup information.
Which protocol supports rapid delivery of streaming media?
Real-Time Transport Protocol
Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?
Request for Comments
Which device should be used for enabling a host to communicate with another host on a different network?
Router
Refer to the exhibit. Which IP addressing scheme should be changed?
Site 2
Match the phases to their correct stage in the router bootup process. (Not all options are used.)
Stage 4 Format the Flash Stage 3 Stage 2 Stage 1
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? (hostname My Switch)
Switch(config)#
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?? (hostname HR Switch)
Switch(config)#?
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.
Fill in the blank. _____ is a best-effort, connectionless application layer protocol that is used to transfer files.
TFTP
What information does the loopback test provide?
The TCP/IP stack on the device is working correctly.
Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem? (Invalid input detected)
The administrator must first enter privileged EXEC mode before issuing the command.
Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?
The asterisk designates which file system is the default file system.
What is a possible hazard that can be caused by network cables in a fire?
The cable insulation could be flammable.
A network administrator is making changes to the configuration of a router. After making the changes and verifying the results, the administrator issues the copy runningconfig startup-config command. What will happen after this command executes?
The configuration will load when the router is restarted.
Refer to the exhibit. A technician has configured a user workstation with the IP address and default subnet masks that are shown. Although the user can access all local LAN resources, the user cannot access any Internet sites by using either FQDN or IP addresses. Based upon the exhibit, what could account for this failure?
The default gateway address in incorrect.
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
After making configuration changes on a Cisco switch, a network administrator issues a copy runningconfig startup-config command. What is the result of issuing this command?
The new configuration will be loaded if the switch is restarted.
After making configuration changes, a network administrator issues a copy runningconfig 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.
Refer to the exhibit. Router R1 has two interfaces that were configured with correct IP addresses and subnet masks. Why does the show ip route command output not display any information about the directly connected networks??
The no shutdown command was not issued on these interfaces.
Which statement is true about variable-length subnet masking?
The size of each subnet may be different, depending on requirements.
What happens when a switch receives a frame and the calculated CRC value is different than the value that is in the FCS field?
The switch drops the frame.
What happens when part of an Internet VoIP transmission is not delivered to the destination?
The transmission continues without the missing portion.
What happens when part of an Internet radio transmission is not delivered to the destination?
The transmission continues without the missing portion.
What happens when part of an Internet television transmission is not delivered to the destination?
The transmission continues without the missing portion.
A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 192.168.25.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. The administrator knows immediately that this IP will not work. Why?
This is a private IP address
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
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
VLAN1
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?
WAN
Which WLAN security protocol generates a new dynamic key each time a client establishes a connection with the AP?
WPA
Which type of wireless security generates dynamic encryption keys each time a client associates with an AP?
WPA
Which type of wireless security makes use of dynamic encryption keys each time a client associates with an AP?
WPA
What device is commonly used to verify a UTP cable?
a cable tester
What does a router use to determine where to send data it receives from the network?
a routing table
Which connection provides a secure CLI session with encryption to a Cisco network device?
an SSH connection
Which connection provides a secure CLI session with encryption to a Cisco switch?
an SSH connection
Which router interface should be used for direct remote access to the router via a modem?
an aux port
A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?
any line configuration mode
Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown?
area C
On a school network, students are surfing the web, searching the library database, and attending an audio conference with their sister school in Japan. If network traffic is prioritized with QoS, how will the traffic be classified from highest priority to lowest priority?
audio conference, database, HTTP
Three office workers 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 office workers 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
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
Why does HTTP use TCP as the transport layer protocol?
because HTTP requires reliable delivery
Which two tasks are functions of the presentation layer? (Choose two.)
compression encryption
What is the auto-MDIX feature on a switch?
crossover Ethernet cable connection
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
data link layer addressing detection of errors through CRC calculations delimiting groups of bits into frames
Refer to the exhibit. The network administrator for a small advertising company has chosen to use the 192.168.5.96/27 network for internal LAN addressing. As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations. Which component is incorrectly configured?
default gateway address
Which function is provided by TCP?
detection of missing packets
Which switching method has the lowest level of latency?
fast-forward
What are two main components of Cisco Express Forwarding (CEF)?
forwarding information base (FIB) adjacency tables
Point-to-point communications where both devices can transmit and receive on the medium at the same time are known as:
full-duplex
What are the three parts of an IPv6 global unicast address?
global routing prefix subnet ID interface ID
Fill in the blank. To prevent faulty network devices from carrying dangerous voltage levels, equipment must be ______ correctly
grounded
Which communication tool allows real-time collaboration?
instant messaging
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
Refer to the exhibit. A ping to PC2 is issued from PC0, PC1, and PC3 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
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
A network administrator is configuring access to control switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode?
lineconin
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
At a minimum, which address is required on IPv6-enabled interfaces?
link-local
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
Fill in the blank. Network devices come in two physical configurations. Devices that have expansion slots that provide the flexibility to add new modules have a _____ configuration.
modular
Which of the following are primary functions of a router?
packet switching path selection
A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?
predictable static IP addresses for easier identification
A network administrator requires access to manage routers and switches locally and remotely. Match the description to the access method. (Not all options are used.)
remote access method preferred out ftp remote access via unsecure
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?
secretin
Which firewall technique blocks incoming packets unless they are responses to internal requests?
stateful packet inspection
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
store-and-forward switching
A technician uses the ping 127.0.0.1 command. What is the technician testing?
the TCP/IP stack on a network host
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
A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify the destination web browser?
the destination port number
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
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
What is the effect of configuring the ipv6 unicast-routing command on a router?
to enable the router as an IPv6 router
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?
to identify the network address of the destination network
Why would a network administrator use the tracert utility?
to identify where a packet was lost or delayed on a network
What is the purpose of the network security accounting function?
to keep track of the actions of a user
What is the purpose of adjacency tables as used in Cisco Express Forwarding (CEF)?
to maintain Layer 2 next-hop addresses
What is the purpose of ICMP messages?
to provide feedback of IP packet transmissions
What is the purpose of having a converged network?
to reduce the cost of deploying and maintaining the communication infrastructure
What is the purpose of the network security authentication function?
to require users to prove who they are
What is the purpose of the routing process?
to select the paths that are used to direct traffic to destination networks
A network technician is investigating network connectivity from a PC to a remote host with the address 10.1.1.5. Which command issued on the PC will return to the technician the complete path to the remote host?
tracert 10.1.1.5
Which procedure is used to reduce the effect of crosstalk in copper cables?
twisting opposing circuit wire pairs together
When is a dialup connection used to connect to an ISP?
when a regular telephone line is used
What needs to be checked when testing a UTP network cable?
wire map
Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)
wireless NIC wireless client software
