CCNA 2 - 4.1 final

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Misconfigured firewall

A customer reports connectivity problems to an ISP technician. Upon questioning the customer, the technician discovers that all network applications are functioning except for FTP. What should the technician suspect is the problem?

The data conversation was started by the HTTP application process running on the client.

The Internet server will send data to port 8547 on the client.

Refer to the exhibit. Which two statements describe the data conversation shown? (Choose two.)

They prevent specified types of traffic from reaching specified network destinations.

How do port filtering and access lists help provide network security?

an IPS

A hacker attempts to reach confidential information that is stored on a server inside the corporate network. A network security solution inspects the entire packet, determines that it is a threat, and blocks the packet from entering the inside network. Which security measure protected the network?

broadcast address

Which type of address is 192.168.17.111/28?

dialup

An organization has 50 traveling salespersons who must be able to connect to the company network from client sites and hotels. Which WAN connection will allow this access?

c

The show IP route command was executed on one of the routers shown in the graphic and the following output was displayed....
From which router was this command executed?

The ip route command needs to be edited so that the next hop address is 10.1.1.5.

A ping issued from PC3 is successful to RTB. However, echo request packets arrive at PC1 but the echo replies do not make it back to PC3. What will fix this problem?

255.255.255.224

Refer to the exhibit. Which subnet mask would accommodate the number of hosts indicated for all subnets if the major network address was 192.168.25.0/24?

BGP

Which routing protocol facilitates the exchange of routing information between different autonomous systems?

The server forwards its IP address and a random port number to the FTP client through the control stream.

Which statement is correct about passive data connections in the FTP protocol?

It resolves an IP address to a fully qualified domain name

Which statement is true about the reverse lookup DNS zone?

DNS relies on the hierarchy of decentralized servers to maintain records.

The root servers maintain records about how to reach top-level domain servers

Which two statements are correct about the DNS hierarchy? (Choose two.)

*It filters unsuitable web content.

Which statement is correct about the proxy support that is offered by the HTTP protocol?

dynamic routes

Which routes are automatically added to the routing table on a neighbor router when routing protocols exchange information about directly connected networks?

*Network address 10.1.1.0 Subnet mask 255.255.255.192

Which combination of network address and subnet mask allows 62 hosts to be connected in a single subnet?

R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.0.2

Refer to the exhibit. There is no routing protocol configured on either router. Which command will create a default route on R1 to forward the traffic to R2?

It is automatically updated and maintained by routing protocols

Which statement describes a route that has been learned dynamically?

It adds a minimal amount of overhead to the data to be transmitted

What is a characteristic of UDP?

incorrectly configured device drivers

What can cause a problem at the data link layer?

crossover

Which cable type is used to interconnect the FastEthernet interfaces of two routers?

*It does not provide acknowledgment of receipt of data
*It is a connectionless protocol

Which two statements are correct about the UDP protocol? (Choose two.)

ISDN

Which type of WAN connection uses a circuit-switched network?

Different encapsulations are configured on the two routers

Refer to the exhibit. The network administrator uses the exhibited commands to configure R1 and R2. Theadministrator confirms Layer 1 connectivity between the two routers is functioning properly. However, R1 iunable to ping the serial interface of R2. What could be the reason for this problem?

to restore the IOS image from a server

What is the purpose of using the copy tftp flash command on a router?

It prevents unauthorized access to a network.

Which statement correctly describes the function of AAA?

It outlines the management, monitoring, and maintenance of a network.

Which statement correctly describes the importance of an SLA?

The DNS configuration

A user is able to ping IP addresses but is unable to ping hosts by domain name. What should be checked at the workstation of the user?

Enter an IP address in the address bar of the web browser to determine if DNS has failed.

A user is unable to connect to the Internet. The network administrator decides to use the top-down troubleshooting approach. Which action should the administrator perform first?

It builds the topology table based on all of the advertisements from its neighbors.

What is a characteristic of the EIGRP routing protocol?

Fiber-optic

A network is spread across two buildings that are separated by a distance of 500 feet (152 meters). An electrical transformer is installed near the cable route. Which type of cable should be used in this network?

B, D, E

Refer to the exhibit. Which cable path segments require the use of crossover cables?

password2

Refer to the exhibit. Router R1 has been configured with the commands that are displayed. Which password will be used to access the EXEC privileged mode of the router?

*Enable the interface administratively.
*Configure the subnet mask on the router correctly.

Refer to the exhibit. Host A is unable to ping R1. Which two configuration steps should be performed on R1 to solve this problem? (Choose two)

*Configure a static route for network 10.1.2.0/24 on R2 and use exit interface S0/0/0.
*Configure a static route for network 10.1.1.0/24 on R1 with the next hop address as the IP address of the serial interface of R2.

Refer to the exhibit. Host A is unable to ping host B. What can be done to solve this problem? (Choose two.)

*It displays the directly connected networks
*It displays the routing protocol that is receiving updates from the neighboring routers.

What are two reasons for issuing the show ip route command on a router? (Choose two.)

*route metric
*administrative distance

When a router learns two paths to the same destination network, which two factors determine the path that will be included in the routing table? (Choose two.)

*The command output will display all routers through which the packet has passed
*The command will calculate the time between when the packet is sent and when a reply is received from a router.

Refer to the exhibit. A network technician issues the tracert 192.168.2.99 command successfully on host A. What are two consequences of running this command? (Choose two.)

*the subnet mask
*the default gateway

A host has been properly cabled and configured with a unique hostname and valid IP address. Which two additional components should be configured to enable the host to access remote resources? (Choose two.)

*Network A broadcast address 192.168.1.47

Refer to the exhibit. What two addresses are the broadcast addresses for network A and network B? (Choose two.)

*There are 128 subnets
*There are 510 usable hosts per subnet

A network administrator has designed a Class B network with a 255.255.254.0 mask. Which two statements are true for this network? (Choose two.)

*Configure the routing protocol on R1 for network 10.0.0.0.
*Configure the routing protocol on R2 for network 10.0.0.0.

Refer to the exhibit. R1 and R2 are configured with the commands that are displayed. All interfaces are properly configured, but neither router is receiving routing updates. What two things can be done to solve the problem? (Choose two.)

*It verifies Layer 3 connectivity
*It measures the time that elapses between when the request packet

Which two statements are correct about the ICMP packet that is used by the ping command? (Choose two.)

It will display the message "Unauthorized login prohibited" before the router prompts for a user name.

What is the effect of issuing the banner login #Unauthorized login prohibited# command on a router?

The default encapsulation is set for the serial0/0/0 interface.

Refer to the exhibit. What fact can be determined from the exhibited output?

The switch failed POST

In order to load an initial configuration on a new switch, a network administrator has connected a laptop to the switch via the use of a console cable. About a minute after the network administrator powers on the switch, the SYST LED on the front of the switch changes from blinking green to amber. What does this indicate?

A one-to-one mapping is created between an inside local and outside global address.

What occurs during a static NAT translation?

IGP routing protocols

Refer to the exhibit. What is used to exchange routing information between routers within each AS?

The router interfaces are administratively down

Why do the static routes fail to appear in the routing table?

The network administrator has attempted to configure the serial interface with a broadcast address

Refer to the exhibit. While configuring the serial interface of a router, the network administrator sees the highlighted error message. What is the reason for this?

R 192.168.6.0/24 [120/15] via 192.168.3.2, 00:00:10, Serial0/0/0

Refer to the exhibit. R2 is connected to the Serial0/0/1 interface of R1 and is properly configured to share routing updates with R1. Which network will R2 exclude from installing in its routing table?

It sends an alert message to the management station when a threshold is reached.

How does an SNMP trap aid network monitoring and management?

The router will get routing updates on the FastEthernet0/0 interface.

Refer to the exhibit. Which statement is true based on the exhibited information?

The addresses are dynamically learned and stored in the address table.

Different hosts connect to the same switch port at different times. If the switch port is configured with dynamic port security, how does it process the MAC addresses?

HTTPS

A company is developing an Internet store for its website. Which protocol should be used to transfer credit card information from customers to the company web server?

branch_23(config-if)# encapsulation ppp
branch_23(config-if)# ip address 192.168.5.21 255.255.255.240
branch_23(config-if)# no shutdown

Refer to the exhibit. A new branch office has been added to the corporate network and a new router is to be installed to allow branch office users to access the database server at headquarters. How should the serial 0/0/0 interface of the new branch office router be configured to connect to the headquarters router?

** Router(config)# enable secret cisco
* Router(config)# service password-encryption

Which two commands ensure that any password that permits access to the privileged EXEC mode is not shown in plain text when the configuration files are displayed? (Choose two.)

**Select the routing protocol to be configured.
** Assign an IP address and subnet mask to the interface
** Configure the routing protocol with the new network IP address.

A new network is to be configured on a router. Which of the following tasks must be completed to configure this interface and implement dynamic IP routing for the new network? (Choose three.)

**TCP uses the SYN-ACK portion of the three-way handshake to ensure that all data has been received.

How does TCP ensure the reliable transfer of data?

Port address translation

A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task?

BGP

What is the most commonly used exterior routing protocol?

Router(config)# hostname Boise

Refer to the exhibit. The network administrator needs to configure the router with a name. Which command will the administrator use to configure the router name?

To determine which Layer 3 protocol should be used to encapsulate the data

Why are port numbers included in the TCP header of a segment?

To select the paths that are used to direct traffic to destination networks

What is the purpose of the routing process?

** The debug ip rip command displays RIP routing activity in real time.
**The debug ip rip command can be issued at the user EXEC configuration mode.

Which two statements are true about the use of the debug ip rip command on a Cisco router? (Choose two.)

*DNS server
*IP address
*subnet mask
*default gateway

What minimum configurations must be set on a host to allow a request to be sent to http://www.cisco.com/? (Choose four.)

The switch has failed POST and must be sent for service.

A Catalyst 2960 switch has been taken out of storage to be used as a temporary replacement for another switch that needs to be repaired. About a minute after the switch has started, the SYST LED on the front of the switch transitions from blinking green to amber. What is the meaning of the amber SYST LED?

A-straight-through, B-crossover, C-straight-through

Refer to the exhibit. Which combination of cables and symbols is correct?

Physical

After an unsuccessful ping to the local router, the technician decides to investigate the router. The technician observes that the lights and fan on the router are not operational. In which layer of the OSI model is the problem most likely occurring?

** creates a virtual session between end-user applications
**carries the IP address of the destination host in the TCP header

What are three characteristics of the TCP protocol? (Choose three.)

With a static route

Refer to the exhibit. The network shown is connected using services from the same ISP. How will the Fohi router dynamically learn routes to the 192.168.16.16/28, 192.168.16.32/28, and 192.168.16.64/28 subnetworks?

Straight-through

Refer to the exhibit. Which type of UTP cable should be used to connect Host A to Switch1?

Circuit switched

When customers use credit cards to make purchases at a small business, a modem is heard dialing a telephone number to transfer the transaction data to the central office. What type of WAN serial connection is in use?

Verify the IP address, subnet, and gateway settings using ipconfig on the PC .

A user reports being unable to access the Internet. The help desk technician employs a bottom-up approach to troubleshooting. The technician first has the user check the patch cable connection from the PC to the wall, and then has the user verify that the NIC has a green link light. What will the technician have the user do next?

** Workstation A will send an ICMP echo request message to workstation B.
** Workstation B will send an ICMP echo reply message to workstation A.

A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)

**inspection of the destination IP address in data packets
** updates from other routers

How does a router know of paths to destination networks? (Choose two.

** The data conversation was started by the HTTP application process running on the client.
*The Internet server will send data to port 8547 on the client.

Refer to the exhibit. Which two statements describe the data conversation shown? (Choose two.)

Synchronizing sequence numbers between source and destination in preparation for data transfer

What is one purpose of the TCP three-way handshake?

Broadcast address

Which type of address is 192.168.17.111/28?

**ALSwitch(config)# line vty 0 4
ALSwitch(config-line)# password cisco
ALSwitch(config-line)# login

**ALSwitch(config)# line cons 0
ALSwitch(config-line)# password cisco
ALSwitch(config-line)# login

Refer to the exhibit. Which two sets of commands are required to configure passwords for all management ports on a Catalyst 2960 switch? (Choose two.)

The POP3 and SMTP server settings in the e-mail application

A user reports being able to access the Internet but not being able to download e-mail from the mail server at the ISP. What should the user check on the user workstation?

RouterA(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2

Refer to the graphic. Which command will configure a static route on Router A to direct traffic from LAN A that is destined for LAN C?

** 255.255.192.0
** 255.255.0.0

Which subnet masks could be used when subnetting a Class B IP address? (Choose two.)

**RTA(config)# ip route 10.16.10.5 255.255.255.252 10.16.10.6

*RTB(config)# ip route 0.0.0.0 0.0.0.0 S0/0/1

Refer to the exhibit. The network administrator has configured the RTA and RTB interfaces. In order to allow hosts that are attached to RTA to reach the server that is attached to RTB, a static route from RTA to the server LAN and a default route from RTB back to RTA need to be configured. Which two commands will the administrator use to accomplish these tasks on the two routers? (Choose two.)

They prevent specified types of traffic from reaching specified network destinations.

How do port filtering and access lists help provide network security?

Fiber optic

Refer to the exhibit. The network administrator of the building in the graphic needs to choose the type of cable best suited to add ServerB to the network. Which cable type is the best choice?

Metric

What is used by a routing protocol to determine the best path to include in the routing table?

** 192.168.65.35
** 192.168.65.60

Refer to the exhibit. Which IP addresses could be assigned to the hosts in the diagram? (Choose two.)

255.255.255.224

Given the network 192.168.25.0 shown in the graphic, which subnet mask would accommodate the number of hosts in each subnet?

Syslog
SNMP

Which two protocols allow network devices to report their status and events to a centralized network management device? (Choose two.)

PAT uses unique source port numbers to distinguish between translations.

What is true regarding the differences between NAT and PAT?

**The router is connected to a router named Boise.
*The IP address of the router interface connected to router RTB is 192.168.2.6 .

Refer to the exhibit. The graphic shows the output of a command issued on router RTB. According to the output, what two statements are true of router RTB? (Choose two.)

**The ip route command needs to be edited so that the next hop address is 10.1.1.5.

Refer to the exhibit. The network administrator uses the command below to configure a default route to the ISP network :
RTB(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.6
A ping issued from the ISP is successful to router RTB. However, ping echo request packets arrive at a host that is attached to the Fa0/0 interface of RTB, and the replies do not make it back to the ISP router. What will fix this problem?

SNMP

A network technician is using a network management station to gather data about the performance of devices and links within the ISP. Which application layer protocol makes this possible?

**to resolve human-readable domain names to numeric IP addresses
**to replace the static HOSTS file with a more practical dynamic system

What are two purposes of DNS? (Choose two.)

2046

How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?

destination network address

In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

dialup

A small tire retailer requires a low-cost WAN connection to its headquarters in order to manage its inventory and process customer sales in real time. Which WAN connection type is best suited to its needs?

Copy the configuration file from a server to RAM

The command copy tftp running-config has been entered on the router. What will this command do?

**RTB(config-if)# no shutdown
**RTB(config-if)# ip address 192.168.102.97 255.255.255.252

Refer to the exhibit. The network administrator needs to configure the Fa0/0 interface of RTB so that hosts from RTA can connect to the server that is attached to RTB. Which two commands will the administrator use to accomplish this task? (Choose two.)

*to test reachability to 192.168.1.7
**to measure the time that packets take to reach 192.168.1.7 and return to the technician's workstation

Refer to the exhibit. A NOC technician at an ISP enters the command shown. What are two reasons to use this command? (Choose two.)

A contract that defines expectations between an organization and a service vendor

What is an SLA?

lower installation costs

A network engineer is planning a new horizontal cable installation in a office building. What advantage would UTP cable have over fiber-optic for this installation?

The folder where the requested resource is stored

In the URL http://dev.cisco.com/wwdocs/procedures.htm, what is identified by wwwdocs?

DNS

Which networking service is used to provide name to IP address mapping?

ABCD because it has the lowest metric

Refer to the exhibit. All of the routes are running RIP. There are two paths from routerA to the 192.168.3.0 network. Based on the output of the show ip route command on routerA, which route was entered into the routing table and why?

Monitoring and testing customer network connections

What is the primary function of the NOC at a large ISP?

SSH

Which protocol allows secure in-band management so that a network administrator can monitor and configure network devices without fear of any passwords being compromised?

Ethernet

Which interface requires an IP address to transport IOS or configuration tiles from the router to a TFTP server on the LAN?

*R1(config)# ip route 0.0.0.0.0.0.0.0 172.10.10.13
*R1(config)# ip route 192.168.20.0 255.255.255.0 S0/0/0

Refer to the exhibit. Which two routes when either is configured on R1 would allow traffic to be forwarded from hosts on network 192.168.10.0/24 to network 192.168.20.0/24 (choose two).

100 meters

What is the max unrepeated distance set by industry standards for UTP cable?

DNS

Which application can be delivered using UDP?

Examine the floor plan and the condition of existing wiring

In designing a cabling upgrade plan, what is the first best practice that should be implemented?

Leased line

Which WAN service provides point-to-point connections with a predefined communications path?

The router prompt will change from Router(config)# to RouterA(config)#

What is the effect of issuing the hostname RouterA command on a router?

Router(config)# enable secret cisco

Router(config)# service password-encryption

Which two commands ensure that any password that permits access to the privileged EXEC mode is not shown in plain text when the configuration files are displayed ? (Choose two.)

It divides networking communications into multiple processes that are smaller and more manageable.

Why is the OSI model useful in network design and assessment?

when the router is set to boot from flash, but the Cisco IOS image to a router

When would TFTP in ROM monitor mode be used to restore a Cisco IOS image to a router?

startup configuration

If the NVRAM on a router were to fail, which router resource would be lost?

It will drop the packet

What will a router do with a packet that is destined for a host with the IP address 192.168.1.5/24 if no entry for the 192.168.1.0/24 network exists in the routing table?

there is a misconfiguration of IP address

Refer to the exhibit. A network administrator is troubleshooting the serial connection between R1 and R2. There is no communication between R1 and R2. Based on the output of the shown ip interface brief command, what is the cause of the problem?

It will act as a DCE device
It is administratively down

Refer to the exhibit. A new router has been configured for the first time with the commands that are displayed. Which two facts can be determined about the interface of this router? (choose two)

it allows multiple hosts on a single LAN to share globally unique IP addresses

What is a feature of PAT?

the administrative distance of the routing protocol

Refer to the exhibit. What does the highlighted value 120 represent?

static NAT

Refer to the exhibit. Devices need to connect to the file server from remote networks. What method should be used to provide the file server with an IP addresss to allow these connections?

VLAN 1 interface

to manage a cisco switch using telnet, where would the management IP address be configured on the switch?

planning and provisioning

Which service team in an ISP is responsible for determining if the new customer has hardware that will support the new WAN connection and if new WAN circuits need to be installed?

performance
service availability

A small company has contracted with its ISP for web hosting. Which two items would be included in the SLA for this service? (choose two)

steps 1, 3, and 6

Which three troubleshooting steps would be appropriate, in order from first step to the last, if a technician troubleshoots the problem by using the divide-and-conquer method?

HDLC

What is the default encapsulation for serial interfaces on cisco routers?

It marks a point in the command string where there is an incorrect or unrecognized character

Refer to the exhibit. What does the ^ symbol indicate?

The DNS server will resolve most queries more quickly

What can be gained by using a caching-only DNS server?

UDP

Which transport layer protocol will allow segments to be exchanged between two hosts with low overhead and no mechanism for re-transmission?

PPP

Which encapsulation method supports automatic IP address assignment via the option IP Negotiated, when SDM is used to configure WAN connections on a router?

easy expansion

What is a characteristic of a scalable network?

Layer 1 - cable is not plugged in correctly

Which statement correctly identifies the OSI layer and possible reason that Serial 0/0/0 is down?

give employees access only to the resources that they need

To protect the data of its customers, an ISP applies the security principle of least privilege within its organization and network. What is the principle of least privilege?

They are configured dynamically and are saved in the running configuration

How does a switch interface that uses sticky port security handle MAC addresses?

It acknowledges the receipt of packets

Which statement describes a feature of TCP?

It is a database that a device keeps about itself concerning network performance parameters

Which statement correctly describes MIB?

UTP

It will be positioned away from electrically noisy areas to avoid EMI. Which cable should the engineer choose?

T1 line

Which technology is used for WAN connections and delivers up to 1.544 Mb/s of symmetrical bandwidth?

scalability

A Cisco switch is installed into a network and two module slots are purposefully left empty. Which network design consideration does this address?

WAN

Refer to the exhibit. Which type of link is supported by this interface module?

192.168.1.5 port 25

Refer to the exhibit. User A wants to send an email to User B. To which IP address and TCP port will the e-mail application that is used by user A send the message?

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