CCNA 4 Practice final exam

Practice final exam

What translation method will allow a server to always keep the same public address?
static NAT
dynamic NAT
static NAT with overload
dynamic NAT with overload

A network administrator is tasked with maintaining two remote locations in the same city. Both locations use the same service provider and have the same service plan for DSL service. When comparing download rates, it is noticed that the location on the East side of town has a faster download rate than the location on the West side of town. How can this be explained?
The West side has a high volume of POTS traffic.
The West side of town is downloading larger packets.
The service provider is closer to the location on the East side.
More clients share a connection to the DSLAM on the West side.

Which combination of Layer 2 protocol and authentication should be used to establish a link without sending authentication information in plain text between a Cisco and a non-Cisco router

PPP with CHAP

Refer to the exhibit. A network administrator is creating a prototype to verify the new WAN design. However, the communication between the two routers cannot be established. Based on the output of the commands, what can be done to solve the problem?
Replace the serial cable .
Replace the WIC on RA.
Configure RA with a clock rate command.
Issue a no shutdown interface command on RB.

A network administrator is instructing a technician on best practices for applying ACLs. Which suggestion should the administrator provide?
Named ACLs are less efficient than numbered ACLs.
Standard ACLs should be applied closest to the core layer.
ACLs applied to outbound interfaces are the most efficient.
Extended ACLs should be applied closest to the source that is specified by the ACL.

Refer to the exhibit. A host that is connected to Fa0/0 is unable to acquire an IP address dynamically from the DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 172.16.1.1". What is the problem
 The Pool addresses for the 172network pool is incorrect 

Which two statements are true about IPv6 link local addresses? (Choose two.)
	They begin with the 2000::/3 prefix.
	They begin with the FE80::/10 prefix.
	They are assigned by IANA to an organization.
	They must be manually configured by the administrator.
	They are assigned to a host by a stateless autoconfiguration process.

 Refer to the exhibit. An ACL numbered 101 already exists on this router. What happens if the network administrator issues the commands that are shown in the exhibit

The existing ACL is modified to include the new commands

What are two characteristics of DSL technology? (Choose two.)
	Service providers deploy DSL in the local loop of the telephone network.
	Filters and splitters allow POTS and DSL traffic to share the same medium.
	DSL download rates are reduced by large volumes of POTS voice traffic.
	Uploads typically offer larger transfer rates than downloads.
	DSL is a shared medium that allows many users to share bandwidth available from the DSLAM.

At what physical location does the responsibility for a WAN connection change from the service provider to the user?

DMZ
local loop
CSU/DSU
demarcation poin

When would the multipoint keyword be used in Frame Relay PVCs configuration?
	when multicasts must be supported
	when using physical interfaces
	when participating routers are in the same subnet
	when global DLCIs are in use

 

Which wireless solution can provide mobile users with non line-of-sight broadband Internet access at speeds comparable to DSL or cable?
	Wi-Fi
	WiMAX
	satellite
	Metro Ethernet

What are two effective measures for securing routers? (Choose two.)
	Enable SNMP traps.
	Disable the HTTP server service.
	Use quotes, phrases, or poems to create passphrases.
	Configure remote administration through VTY lines for Telnet access.
	Protect all active router interfaces by configuring them as passive interfaces.

Refer to the exhibit. The SSH connections between the remote user and the server are failing. The correct configuration of NAT has been verified. What is the most likely cause of the problem?
SSH is unable to pass through NAT.
**There are incorrect access control list entries.
The access list has the incorrect port number for SSH.
The ip helper command is required on S0/0/0 to allow inbound connections.

What is a major characteristic of a worm?
	malicious software that copies itself into other executable programs
	tricks users into running the infected software
	a set of computer instructions that lies dormant until triggered by a specific event
	exploits vulnerabilities with the intent of propagating itself across a network

 Refer to the exhibit. What would be the result of entering the exhibited configuration on a Frame Relay router
Routing protocol multicast update can be forwarded across the frame relay PVC 

What effect would the Router1(config-ext-nacl)# permit tcp 172.16.4.0 0.0.0.255 any eq www command have when implemented inbound on the f0/0 interface?
	All TCP traffic is permitted, and all other traffic is denied.
	The command is rejected by the router because it is incomplete.
	All traffic from 172.16.4.0/24 is permitted anywhere on any port.
	Traffic originating from 172.16.4.0/24 is permitted to all TCP port 80 destinations.

Refer to the exhibit. Routers R1 and R2 have been configured with EIGRP in the same autonomous system. Computers PC1 and PC2 are not able to ping each other. Further investigation has revealed that the route to 192.168.10.0 is missing from the routing table on R2. What is the cause of the problem?
The networks are not correctly summarized.
The FastEthernet interfaces on R1 are configured as passive.
The network statements on R2 are incorrectly configured.
EIGRP on R1 does not recognize the 192.168.10.0 network.

In addition to standard security procedures, what additional feature of VPN technology supports privacy between end users? the implementation of a tunneling protocol the use of only baseband connections a requirement of active authentication via a RADIUS server the use of a call-back procedure to verify user credentials

Which statement is true about NCP?
Link termination is the responsibility of NCP.
Each network protocol has a corresponding NCP.
NCP establishes the initial link between PPP devices.
NCP tests the link to ensure that the link quality is sufficien

Which type of ACL will permit traffic inbound into a private network only if an outbound session has already been established between the source and destination?
extended
reflexive
standard
time-based

Refer to the exhibit. A network administrator has been asked to configure PPP with CHAP authentication over the serial link between routers R1 and R2. What additional configuration should be included on both routers to complete the task?

A network administrator is analyzing the data from a network performance baseline. Which condition will not be indicated in the baseline data?
	the IP addressing scheme of the network
	the most heavily used parts of the network
	congested areas of the network
	error rates in different parts of the network

While configuring a Frame Relay connection, when should a static Frame Relay map be used?
	the remote router is a non-Cisco router
	the local router is configured with subinterfaces
	broadcast traffic and multicast traffic over the PVC must be permitted
	globally significant rather than locally significant DLCIs are being used

Refer to the exhibit. Router1 is not able to communicate with its peer that is connected to this interface. Based on the output as shown, what is the most likely cause?

unplugged cable

Refer to the exhibit. Routers R1 and R2 are both configured for single area OSPF. Users who are connected to switch S1 are unable to access database applications that run on servers that are connected to S2. The network engineer is working remotely and only has the information that is shown in the exhibit to direct initial troubleshooting efforts. Based on the exhibit, which OSI layer is the most appropriate to start with for a divide-and-conquer approach?
network layer
application layer
data-link layer
physical layer

Refer to the exhibit. Router1 and Router2 each support separate areas of a data center, and are connected via a crossover cable. Resources attached to Router1 are unable to connect to resources attached to Router2. What is the likely cause?
The crossover cable is faulty.
The IP addressing is incorrect.
There is a Layer 2 problem with the router connection.
The upper layers are experiencing an unspecified problem.
One or both of the Ethernet interfaces are not working correctly.

Which three statements accurately describe attributes of a security policy? (Choose three.)
	It creates a basis for legal action if necessary.
	It should not be altered once it is implemented.
	It defines a process for managing security violations.
	It focuses primarily on threats from outside of the organization.
	It defines acceptable and unacceptable use of network resources.
	It provides step-by-step procedures to harden routers and other network devices.

Refer to the exhibit. You are a network administrator who has been tasked with completing the Frame Relay topology that interconnects two remote sites. How should the point-to-point subinterfaces be configured on HQ to complete the topology?

HQ(config-subif)# frame-relay interface-dlci 301 on Serial 0/0/0.1
HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2

 Refer to the exhibit. Partial results of the show access-lists and show ip interface FastEthernet 0/1 commands for router R3 are shown. There are no other ACLs in effect. Host A is unable to telnet to host B. Which action will correct the problem but still restrict other traffic between the two networks?
Apply the ACL in the inbound direction.
Apply the ACL on the FastEthernet 0/0 interface.
**Reverse the order of the TCP protocol statements in the ACL.
Modify the second entry in the list to permit tcp host 192.168.10.10 any eq telnet.

Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to ping the default gateway. What is the cause of the problem?
	The default gateway is in the wrong subnet.
	STP has blocked the port that PC1 is connected to.
	Port Fa0/2 on S2 is assigned to the wrong VLAN.
	S2 has the wrong IP address assigned to the VLAN30 interface.

Which important piece of troubleshooting information can be discovered about a serial interface using the show controllers command?
	queuing strategy
	serial cable type
	interface IP address

Which protocol is implicitly denied at the end of an IPv4 access list?
	IP
	TCP
	UDP
	HTTP

Refer to the exhibit. An administrator has added the exhibited commands to routers A and B, but no routing updates are exchanged between the two routers. Based on the information that is given, what is the likely cause of the problem?
Router A is advertising the wrong network.
The authentication key strings do not match.
The serial interfaces of routers A and B are not on the same network.
The authentication key numbers do not match the EIGRP process number for both routers.

Which method is most effective in protecting the routing information that is propagated between routers on the network?

Configure routing protocol authentication.

Which characteristic of VPN technology prevents the contents of data communications from being read by unauthorized parties?
	QoS
	latency
	reliability
	confidentiality

Refer to the exhibit. In the partial router configuration that is shown, what is the purpose of access list BLOCK_XYZ?
	to prevent source IP address spoofing by hosts on the Fa0/0 LAN
	to block access by Fa0/0 LAN hosts to all network services beyond the router
	to prevent users on the Fa0/0 LAN from opening Telnet sessions on the router
	to secure Fa0/0 hosts by allowing only locally sourced traffic into the Fa0/0 LAN

Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. Host A has sent a packet to Web Server. What is the destination IP address of the return packet from Web Server when received at R1??

172.30.20.1:3333

Which Layer 2 access method separates traffic into time slots and is specified by DOCSIS for use with cable high speed Internet service?
	TDMA
	FDMA
	CDMA
	S-CDMA

Refer to the exhibit. A network administrator has issued the commands that are shown on Router1 and Router2. A later review of the routing tables reveals that neither router is learning the LAN network of the neighbor router. What is most likely the problem with the RIPng configuration?
	The serial interfaces are in different subnets.
	The RIPng process is not enabled on interfaces.
	The RIPng processes do not match between Router1 and Router2.
	The RIPng network command is missing from the IPv6 RIP configuration.

An administrator learns of an e-mail that has been received by a number of users in the company. This e-mail appears to come from the office of the administrator. The e-mail asks the users to confirm their account and password information. Which type of security threat does this e-mail represent?
cracking
phishing
phreaking
spamming

A recently patched application server is experiencing response time problems. The network on which the application server is located has been experiencing occasional outages that the network team believes may be related to recent routing changes. Network and application teams have been notified to work on their respective issues. Which statement applies to this situation?
	Only results from the software package should be tested as the network is designed to accommodate the proposed software platform.
	Scheduling will be easy if the network and software teams work independently.
	It will be difficult to isolate the problem if two teams are implementing changes independently.
	Results from changes will be easier to reconcile and document if each team works in isolation.

A router in a Frame Relay network needs to forward a message received from a host. What two methods does the router use to identify the correct VC to forward the message? (Choose two.)
	The router forwards the frame to all ports in the network and learns the address from the reply frame.
	The destination host IP address is embedded in the DLCI.
	The router searches Inverse ARP tables for maps of DLCIs to IP addresses.
	A table of static mappings can be searched.
	The router broadcasts a request for the required IP address.

Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request entering interface s0/0/0, destined for an FTP server at IP address 192.168.1.5?

It matches the incoming packet to the access-list 101 permit ip any 192.168.1.0 0.0.0.255 statement, ignores the remaining statements in ACL 101, and allows the packet into the router.

Refer to the exhibit. A network administrator has been asked to configure PPP with PAP authentication over the serial link between routers R1 and R2. What additional configuration should be included on both routers to complete the task?

A network administrator has moved the company intranet web server from a switch port to a dedicated router interface. How can the administrator determine how this change has affected performance and availability on the company intranet?
	Interview departmental administrative assistants and determine if they think load time for web pages has improved.
	Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.
	Conduct a performance test and compare with the baseline that was established previously.
	Determine performance on the intranet by monitoring load times of company web pages from remote sites.