CCNA 4 Chapter 1 Exam Answer v5 & v5.02 2015 (100%), CCNA 4 Chapter 1 Exam Answer, CCNA 4 Chapter 1, CCNA 4 Chapter 1 v5, CCNA 4 Chapter 1 100, CCNA 4 chapter 1 2015
What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)
- quality of service
- resiliency
- modularity
- security
- availability
What is an important first consideration when starting to design a network?
- access security
- type of applications
- size of the network
- protocols to be used
Which two devices would commonly be found at the access layer of the hierarchical enterprise LAN design model? (Choose two.)
- access point
- firewall
- Layer 2 switch
- Layer 3 device
- modular switch
In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?
- access
- core
- data link
- distribution
- physical
Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?
- 3 layer
- 7 layer
- two-tier collapsed core
- three-tier
In a hierarchical network design, which layers may be combined into a collapsed core for smaller networks?
- core and access
- core and distribution
- distribution and access
- core, distribution, and access
The network design for a college with users at five sites is being developed. Where in the campus network architecture would servers used by all users be located?
- access-distribution
- data center
- enterprise edge
- services
What is one advantage to designing networks in building block fashion for large companies?
- failure isolation
- increased network access time
- mobility
- redundancy
A network engineer wants to redesign the wireless network and make use of wireless network controllers that manage the many deployed wireless access points. In which network design module of the campus network architecture would the centralized wireless network controllers be found?
- access-distribution
- data center
- enterprise edge
- services
Which network module is the fundamental component of a campus design?
- access-distribution module
- services module
- data center
- enterprise edge
Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?
- borderless
- static
- modular
- network module
Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?
- single-homed
- dual-homed
- multihomed
- dual-multihomed
Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)
- Cisco Borderless
- Cisco Enterprise Edge
- Cisco Data Center
- Cisco Enterprise Campus
- Cisco Collaboration
- Cisco Enterprise Branch
Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?
- applications and devices
- enterprise WAN
- services module
- service provider edge
Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?
- building distribution
- Cisco AnyConnect
- enterprise edge
- service provider edge
What is creating a new challenge for IT departments by changing the border of the enterprise network?
- company-owned desktops
- access layer switching
- tablets
- energy costs
Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?
- Cisco Enterprise Campus
- Cisco Enterprise Branch
- Cisco Borderless
- Cisco Enterprise Edge
Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?
- Cisco Enterprise Campus Architecture
- Cisco Enterprise Branch Architecture
- Cisco Borderless Network Architecture
- Cisco Collaboration Architecture
Fill in the blank.
Reducing the complexity of network design by dividing a network into smaller areas is an example of a hierarchical network model.​
Fill in the blank. Use the abbreviation.
Under the Cisco Enterprise Edge module, the submodule that provides remote access including authentication and IPS appliances is the VPN and remote access submodule.
Match the layer to the corresponding device. (Not all options are used.)
Match the submodule to the correct Cisco Enterprise Architecture module. (Not all options are used.)
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A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?
- a dialup connection that is supplied by their local telephone service provider
- Virtual Private Networks that would enable the company to connect easily and securely with employees
- private dedicated lines through their local service provider
- a broadband service, such as DSL, through their local service provider
-
Which network scenario will require the use of a WAN?
- Employee workstations need to obtain dynamically assigned IP addresses.
- Employees need to connect to the corporate email server through a VPN while traveling.
- Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.
- Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.
-
Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)
- access server
- CSU
- Layer 2 switch
- DSU
- dialup modem
-
What are two advantages of packet switching over circuit switching? (Choose two.)
- The communication costs are lower.
- There are fewer delays in the data communications processes.
- Multiple pairs of nodes can communicate over the same network channel.
- A dedicated secure circuit is established between each pair of communicating nodes.
- A connection through the service provider network is established quickly before communications start.
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What is a requirement of a connectionless packet-switched network?
- Each packet has to carry only an identifier.
- The network predetermines the route for a packet.
- Full addressing information must be carried in each data packet.
- A virtual circuit is created for the duration of the packet delivery.
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What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?
-
What are two common high-bandwidth fiber-optic media standards? (Choose two.)
-
What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
- ATM
- ISDN
- municipal Wi-Fi
- VPN
-
What is a feature of dense wavelength-division multiplexing (DWDM) technology?
- It replaces SONET and SDH technologies.
- It enables bidirectional communications over one strand of fiber.
- It provides Layer 3 support for long distance data communications.
- It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.
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Which WAN technology establishes a dedicated constant point-to-point connection between two sites?
- ATM
- ISDN
- leased lines
- Frame Relay
-
Which WAN technology is cell-based and well suited to carry voice and video traffic?
- ATM
- ISDN
- VSAT
- Frame Relay
-
Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)
- ATM
- ISDN
- MPLS
- dialup
- Frame Relay
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A company needs to interconnect several branch offices across a metropolitan area. The network engineer is seeking a solution that provides high-speed converged traffic, including voice, video, and data on the same network infrastructure. The company also wants easy integration to their existing LAN infrastructure in their office locations. Which technology should be recommended?
- VSAT
- ISDN
- Frame Relay
- Ethernet WAN
-
A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?
- circuit-switched network
- Ethernet WAN
- MPLS
- packet-switched network
-
Which WAN connectivity method would be used in a remote location where there are no service provider networks?
-
A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?
- 802.11
- municipal Wi-Fi
- DSL
- WiMAX
-
Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?
-
Which wireless technology provides Internet access through cellular networks?
- satellite
- municipal WiFi
- LTE
- WiMAX
-
Which geographic scope requirement would be considered a distributed WAN scope?
- local
- one-to-one
- one-to-many
- many-to-many
- regional
- global
-
A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)
- public infrastructure
- private infrastructure
- Internet
- dedicated
- satellite
-
Match the type of WAN device or service to the description. (Not all options are used.)
-
Match the connectivity type to the description. (Not all options are used.)
-
At which layer of the OSI model does multiplexing take place?
- Layer 1
- Layer 2
- Layer 3
- Layer 4
-
Which command can be used to view the cable type that is attached to a serial interface?
- Router(config)# show interfaces
- Router(config)# show controllers
- Router(config)# show ip interface
- Router(config)# show ip interface brief
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Which field marks the beginning and end of an HDLC frame?
-
Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?
- Serial 0/0/0 is up, line protocol is up
- Serial 0/0/0 is up, line protocol is down
- Serial 0/0/0 is down, line protocol is down
- Serial 0/0/0 is up (looped)
- Serial 0/0/0 is up (disabled)
- Serial 0/0/0 is administratively down, line protocol is down
-
Which is an advantage of using PPP on a serial link instead of HDLC?
- option for authentication
- higher speed transmission
- fixed-size frames
- option for session establishment
-
What are three components of PPP? (Choose three.)
- authentication
- LCP
- multilink
- NCP
- compression
- HDLC-like framing
-
How does PPP interface with different network layer protocols?
- by using separate NCPs
- by negotiating with the network layer handler
- by encoding the information field in the PPP frame
- by specifying the protocol during link establishment through LCP
-
Which address is used in the Address field of a PPP frame?
- a single byte of binary 00000000
- a single byte of binary 10101010
- a single byte of binary 11111111
- the IP address of the serial interface
-
Which three physical layer interfaces support PPP? (Choose three.)
- FastEthernet
- GigabitEthernet
- POTS
- asynchronous serial
- synchronous serial
- HSSI
-
Which three are types of LCP frames used with PPP? (Choose three.)
- link-negotiation frames
- link-acknowledgment frames
- link-maintenance frames
- link-termination frames
- link-control frames
- link-establishment frames
-
Which protocol will terminate the PPP link after the exchange of data is complete?
-
During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)
- Configure-Nak
- Code-Reject
- Protocol-Reject
- Configure-Reject
- Discard-Request
-
Which three statements are true about PPP? (Choose three.)
- PPP can use synchronous and asynchronous circuits.
- PPP can only be used between two Cisco devices.
- PPP carries packets from several network layer protocols in LCPs.
- PPP uses LCPs to establish, configure, and test the data link connection.
- PPP uses LCPs to agree on format options such as authentication, compression, and error detection.
-
Which PPP option can detect links that are in a looped-back condition?
- Magic Number
- MRU
- Callback
- ACCM
-
When configuring Multilink PPP, where is the IP address for the multilink bundle configured?
- on a physical serial interface
- on a subinterface
- on a multilink interface
- on a physical Ethernet interface
-
Refer to the exhibit. Which statement describes the status of the PPP connection?
- Only the link-establishment phase completed successfully.
- Only the network-layer phase completed successfully.
- Neither the link-establishment phase nor the network-layer phase completed successfully.
- Both the link-establishment and network-layer phase completed successfully.
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Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?​
- The usernames do not match.
- The passwords do not match.
- The passwords should be longer than 8 characters.
- The interface IP addresses are in different subnets.
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In which situation would the use of PAP be preferable to the use of CHAP?
- when router resources are limited
- when multilink PPP is used
- when plain text passwords are needed to simulate login at the remote host
- when a network administrator prefers it because of ease of configuration
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A network administrator is evaluating authentication protocols for a PPP link. Which three factors might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)
- establishes identities with a two-way handshake
- uses a three-way authentication periodically during the session to reconfirm identities
- control by the remote host of the frequency and timing of login events
- transmits login information in encrypted format
- uses an unpredictable variable challenge value to prevent playback attacks
- makes authorized network administrator intervention a requirement to establish each session
-
Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.
- CHAP authentication failed because of an unknown hostname.
- A PPP session was successfully established.
- Both PAP and CHAP authentication were attempted.
- The debug output is from router R2.
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Match the phases of establishing a PPP session in the correct order. (Not all options are used.)
-
Match the PPP option with the correct description. (Not all options are used.)
-
Match the steps to the PPP CHAP authentication process sequence. (Not all options are used.)
CCNA 4 Chapter 5 Exam Answer v5 & v5.02 2015 (100%), CCNA 4 Chapter 5 Exam Answer, CCNA 4 Chapter 5, CCNA 4 Chapter 5 v5, CCNA 4 Chapter 5 100, CCNA 4 Chapter 5 2015
Typically, which network device would be used to perform NAT for a corporate environment?
- DHCP server
- host device
- router
- server
- switch
What is the group of public IPv4 addresses used on a NAT-enabled router known as?
- outside local addresses
- inside local addresses
- inside global addresses
- outside global addresses
When NAT is employed in a small office, which address type is typically used for hosts on the local LAN?
- private IP addresses
- global public IP addresses
- Internet-routable addresses
- both private and public IP addresses
Which version of NAT allows many hosts inside a private network to simultaneously use a single inside global address for connecting to the Internet?
- PAT
- static NAT
- dynamic NAT
- port forwarding
Which type of NAT maps a single inside local address to a single inside global address?
- dynamic
- static
- port address translation
- overloading
Several key servers in an organization must be directly accessible from the Internet. What addressing policy should be implemented for these servers?
- Use dynamic NAT to provide addresses for the servers.
- Place all of the servers in their own Class C private subnet.
- Use DHCP to assign addresses from the pool of Class B addresses.
- Assign static internal addresses and public external addresses to each of the servers.
What is a disadvantage of NAT?
- There is no end-to-end addressing.
- The router does not need to alter the checksum of the IPv4 packets.​
- The internal hosts have to use a single public IPv4 address for external communication.
- The costs of readdressing hosts can be significant for a publicly addressed network.​
Refer to the exhibit. What has to be done in order to complete the static NAT configuration on R1?
- R1 should be configured with the command ip nat inside source static 209.165.200.1 192.168.11.11.
- R1 should be configured with the command ip nat inside source static 209.165.200.200 192.168.11.11.
- Interface S0/0/0 should be configured with the command ip nat outside.
- Interface Fa0/0 should be configured with the command no ip nat inside.
Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?
- Access-list 1 is misconfigured.
- NAT-POOL2 is not bound to ACL 1.
- Interface Fa0/0 should be identified as an outside NAT interface.
- The NAT pool is incorrect.
Which statement accurately describes dynamic NAT?
- It always maps a private IP address to a public IP address.
- It provides an automated mapping of inside local to inside global IP addresses.
- It provides a mapping of internal host names to IP addresses.
- It dynamically provides IP addressing to internal hosts.
A network administrator configures the border router with the command R1(config)# ip nat inside source list 4 pool corp. What is required to be configured in order for this particular command to be functional?
- a NAT pool named corp that defines the starting and ending public IP addresses
- an access list named corp that defines the private addresses that are affected by NAT
- an access list numbered 4 that defines the starting and ending public IP addresses
- ip nat outside to be enabled on the interface that connects to the LAN affected by the NAT
- a VLAN named corp to be enabled and active and routed by R1
When dynamic NAT without overloading is being used, what happens if seven users attempt to access a public server on the Internet when only six addresses are available in the NAT pool?
- No users can access the server.
- The request to the server for the seventh user fails.
- All users can access the server.
- The first user gets disconnected when the seventh user makes the request.
A network engineer has configured a router with the command ip nat inside source list 4 pool corp overload. Why did the engineer use the overload option?
- The company has more private IP addresses than available public IP addresses.
- The company needs to have more public IP addresses available to be used on the Internet.
- The company router must throttle or buffer traffic because the processing power of the router is not enough to handle the normal load of external-bound Internet traffic.
- The company has a small number of servers that should be accessible by clients from the Internet.
Refer to the exhibit. What will be the effect of entering the command that is shown in the exhibit on R2 as part of the dynamic NAT configuration?
- It will define a pool of addresses for translation.
- It will identify an inside NAT interface.
- It will bind NAT-POOL1 with ACL 1.
- It will define the source ACL for the external interface.
Which configuration would be appropriate for a small business that has the public IP address of 209.165.200.225/30 assigned to the external interface on the router that connects to the Internet?
- access-list 1 permit 10.0.0.0 0.255.255.255
ip nat inside source list 1 interface serial 0/0/0 overload
- access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp
- access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
- access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
ip nat inside source static 10.0.0.5 209.165.200.225
What are two of the required steps to configure PAT? (Choose two.)
- Define a pool of global addresses to be used for overload translation.
- Create a standard access list to define applications that should be translated.
- Define the range of source ports to be used.
- Identify the inside interface.
- Define the hello and interval timers to match the adjacent neighbor router.
Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?
- defines which addresses can be translated
- defines which addresses are allowed into the router
- defines which addresses are assigned to a NAT pool
- defines which addresses are allowed out of the router
What is the purpose of port forwarding?
- Port forwarding allows an external user to reach a service on a private IPv4 address that is located inside a LAN.
- Port forwarding allows users to reach servers on the Internet that are not using standard port numbers.
- Port forwarding allows an internal user to reach a service on a public IPv4 address that is located outside a LAN.
- Port forwarding allows for translating inside local IP addresses to outside local addresses.
What is a characteristic of unique local addresses?
- They allow sites to be combined without creating any address conflicts.
- They are designed to improve the security of IPv6 networks.
- Their implementation depends on ISPs providing the service.
- They are defined in RFC 3927.
Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?
- dynamic NAT with a pool of two public IP addresses
- PAT using an external interface
- static NAT with one entry
- static NAT with a NAT pool
Refer to the exhibit. The NAT configuration applied to the router is as follows:
ERtr(config)# access-list 1 permit 10.0.0.0 0.255.255.255
ERtr(config)# ip nat pool corp 209.165.201.6 209.165.201.30 netmask 255.255.255.224
ERtr(config)# ip nat inside source list 1 pool corp overload
ERtr(config)# ip nat inside source static 10.10.10.55 209.165.201.4
ERtr(config)# interface gigabitethernet 0/0
ERtr(config-if)# ip nat inside
ERtr(config-if)# interface serial 0/0/0
ERtr(config-if)# ip nat outside
Based on the configuration and the output shown, what can be determined about the NAT status within the organization?
- NAT is working.
- Static NAT is working, but dynamic NAT is not.
- Dynamic NAT is working, but static NAT is not.
- Not enough information is given to determine if both static and dynamic NAT are working.
Match the steps with the actions that are involved when an internal host with IP address 192.168.10.10 attempts to send a packet to an external server at the IP address 209.165.200.254 across a router R1 that is running dynamic NAT. (NAT all options are used.)
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What problem is causing PC-A to be unable to communicate with the Internet?
- The static route should not reference the interface, but the outside address instead.
- This router should be configured to use static NAT instead of PAT.
- The ip nat inside source command refers to the wrong interface.
- The access list used in the NAT process is referencing the wrong subnet.
- The NAT interfaces are not correctly assigned.
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CCNA 4 Chapter 6 Exam Answer v5 & v5.02 2015 (100%), CCNA 4 Chapter 6 Exam Answer, CCNA 4 Chapter 6, CCNA 4 Chapter 6 v5, CCNA 4 Chapter 6 100, CCNA 4 Chapter 6 2015
What are two disadvantages of employing teleworkers in an organization? (Choose two.)​
- increased usage of sick or vacation days
- increased difficulty of tracking task progress
- slower customer service response times
- the need to implement a new management style
- increase in office expenses
Which technology provides a secure connection between a SOHO and the headquarters office?
What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?
Which networking technology will ensure reliable and secure remote access when a teleworker connects to a corporate network?
- an encrypted VPN tunnel
- routers with QoS capability
- a VoIP and videoconferencing capable connection
- broadband (cable or DSL) access to the corporate network
In which layer of the TCP/IP protocol model does IPsec apply security to network data?
- application
- transport
- internet
- network access
What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)
- LTE
- Frame Relay
- leased lines
- QoS
- IPsec
Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)
- VPN client software or VPN-enabled router
- multifunction security appliance
- broadband Internet connection
- VPN server or concentrator
- authentication server
Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.)
- a deterministic media access method
- channel bandwidth
- modulation technique
- VPN tunneling requirements
- the separation of the voice and data transmissions
Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?
Which standard specifies the channel frequencies and the deterministic access method of cable networks?
What advantage does DSL have compared to cable technology?
- DSL upload and download speeds are always the same.
- DSL is faster.
- DSL has no distance limitations.
- DSL is not a shared medium.
Which medium is used for delivering data via DSL technology through PSTN?
- fiber
- copper
- radio frequency
- wireless
How is voice traffic affected when the customer uses ADSL technology?
- No special equipment is needed to separate voice and data signals.
- Voice traffic is interrupted if the ADSL service fails.
- ADSL signals can distort voice transmissions.
- Voice signals are on a separate wire pair from ADSL signals.
Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?
Which broadband wireless technology is based on the 802.11 standard?
- municipal Wi-Fi
- WiMAX
- CDMA
- UMTS
Which type of long distance telecommunication technology provides point-to-point connections and cellular access?
- WiMax
- municipal Wi-Fi
- satellite
- mobile broadband
A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?
- satellite
- DSL
- WiMax
- cable
Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?
- Wi-Fi Mesh
- mobile broadband
- WiMax
- satellite
Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes to 1492?
- to enable CHAP authentication
- to reduce congestion on the DSL link
- to accommodate the PPPoE headers
- to establish a secure tunnel with less overhead
What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)
- The PPP configuration is on the dialer interface.
- An MTU size of 1492 bytes is configured on the Ethernet interface.
- The Ethernet interface does not have an IP address.
- The customer router CHAP username and password are independent of what is configured on the ISP router.
- The dialer pool command is applied to the Ethernet interface to link it to the dialer interface.
Fill in the blank.
DOCSIS specifies the MAC sub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.
Fill in the blank. Use only an acronym.
PPPoE creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.
Match each type of broadband wireless technology with the correct description. (Not all options are used.)
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