CCNAv7 Flashcards
Which design feature will limit the size of a failure domain in an enterprise network?
the purchase of enterprise equipment that is designed for large traffic volume
the installation of redundant power supplies
the use of a collapsed core design
the use of the building switch block approach
the use of the building switch block approach
Which two things should a network administrator modify on a router to perform password recovery? (Choose two.)
the system image file the NVRAM file system the configuration register value the startup configuration file system ROM
the configuration register value
the startup configuration file
What type of network uses one common infrastructure to carry voice, data, and video signals?
borderless
converged
managed
switched
converged
What are three advantages of using private IP addresses and NAT? (Choose three.)
hides private LAN addressing from outside devices that are connected to the Internet
permits LAN expansion without additional public IP addresses
reduces CPU usage on customer routers
creates multiple public IP addresses
improves the performance of the router that is connected to the Internet
conserves registered public IP addresses
hides private LAN addressing from outside devices that are connected to the Internet
permits LAN expansion without additional public IP addresses
conserves registered public IP addresses
Which two scenarios are examples of remote access VPNs? (Choose two.)
All users at a large branch office can access company resources through a single VPN connection.
A small branch office with three employees has a Cisco ASA that is used to create a VPN connection to the HQ.
A toy manufacturer has a permanent VPN connection to one of its parts suppliers.
A mobile sales agent is connecting to the company network via the Internet connection at a hotel.
An employee who is working from home uses VPN client software on a laptop in order to connect to the company network.
A mobile sales agent is connecting to the company network via the Internet connection at a hotel.
An employee who is working from home uses VPN client software on a laptop in order to connect to the company network.
What are three benefits of cloud computing? (Choose three.)
It utilizes end-user clients to do a substantial amount of data preprocessing and storage.
It uses open-source software for distributed processing of large datasets.
It streamlines the IT operations of an organization by subscribing only to needed services.
It enables access to organizational data anywhere and at any time.
It turns raw data into meaningful information by discovering patterns and relationships.
It eliminates or reduces the need for onsite IT equipment, maintenance, and management.
It streamlines the IT operations of an organization by subscribing only to needed services.
It enables access to organizational data anywhere and at any time.
It eliminates or reduces the need for onsite IT equipment, maintenance, and management.
What is a characteristic of a single-area OSPF network?
All routers share a common forwarding database.
All routers have the same neighbor table.
All routers are in the backbone area.
All routers have the same routing table.
All routers are in the backbone area.
What is a WAN?
a network infrastructure that spans a limited physical area such as a city
a network infrastructure that provides access to other networks over a large geographic area
a network infrastructure that provides access in a small geographic area
a network infrastructure designed to provide data storage, retrieval, and replication
a network infrastructure that provides access to other networks over a large geographic area
A network administrator has been tasked with creating a disaster recovery plan. As part of this plan, the administrator is looking for a backup site for all of the data on the company servers. What service or technology would support this requirement?
data center
virtualization
dedicated servers
software defined networking
data center
Which type of OSPF packet is used by a router to discover neighbor routers and establish neighbor adjacency?
link-state update
hello
database description
link-state request
hello
Which two statements are characteristics of a virus? (Choose two.)
A virus has an enabling vulnerability, a propagation mechanism, and a payload.
A virus can be dormant and then activate at a specific time or date.
A virus provides the attacker with sensitive data, such as passwords.
A virus replicates itself by independently exploiting vulnerabilities in networks.
A virus typically requires end-user activation.
A virus typically requires end-user activation.
A virus can be dormant and then activate at a specific time or date.
Which public WAN access technology utilizes copper telephone lines to provide access to subscribers that are multiplexed into a single T3 link connection?
ISDN
DSL
cable
dialup
DSL
A customer needs a metropolitan area WAN connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?
packet-switched network
Ethernet WAN
circuit-switched network
MPLS
Ethernet WAN
A company has contracted with a network security firm to help identify the vulnerabilities of the corporate network. The firm sends a team to perform penetration tests to the company network. Why would the team use debuggers?
to detect installed tools within files and directories that provide threat actors remote access and control over a computer or network
to reverse engineer binary files when writing exploits and when analyzing malware
to obtain specially designed operating systems preloaded with tools optimized for hacking
to detect any evidence of a hack or malware in a computer or network
to reverse engineer binary files when writing exploits and when analyzing malware
Consider the following output for an ACL that has been applied to a router via the access-class in command. What can a network administrator determine from the output that is shown?
R1#
Standard IP access list 2
10 permit 192.168.10.0, wildcard bits 0.0.0.255 (2 matches)
20 deny any (1 match)
Two devices connected to the router have IP addresses of 192.168.10. x .
Two devices were able to use SSH or Telnet to gain access to the router.
Traffic from one device was not allowed to come into one router port and be routed outbound a different router port.
Traffic from two devices was allowed to enter one router port and be routed outbound to a different router port.
Two devices were able to use SSH or Telnet to gain access to the router.
What command would be used as part of configuring NAT or PAT to clear dynamic entries before the timeout has expired?
clear ip dhcp
clear ip nat translation
clear access-list counters
clear ip pat statistics
clear ip nat translation
What are two characteristics of video traffic? (Choose two.)
Video traffic consumes less network resources than voice traffic consumes.
Video traffic latency should not exceed 400 ms.
Video traffic is more resilient to loss than voice traffic is.
Video traffic requires a minimum of 30 kbs of bandwidth.
Video traffic is unpredictable and inconsistent.
Video traffic latency should not exceed 400 ms.
Video traffic is unpredictable and inconsistent
In setting up a small office network, the network administrator decides to assign private IP addresses dynamically to workstations and mobile devices. Which feature must be enabled on the company router in order for office devices to access the internet?
UPnP
MAC filtering
NAT
QoS
NAT
A data center has recently updated a physical server to host multiple operating systems on a single CPU. The data center can now provide each customer with a separate web server without having to allocate an actual discrete server for each customer. What is the networking trend that is being implemented by the data center in this situation?
online collaboration
BYOD
virtualization
maintaining communication integrity
virtualization
Which two IPsec protocols are used to provide data integrity?
MD5 DH AES SHA RSA
MD5
SHA
If an outside host does not have the Cisco AnyConnect client preinstalled, how would the host gain access to the client image?
The Cisco AnyConnect client is installed by default on most major operating systems.
The host initiates a clientless VPN connection using a compliant web browser to download the client.
The host initiates a clientless connection to a TFTP server to download the client.
The host initiates a clientless connection to an FTP server to download the client.
The host initiates a clientless VPN connection using a compliant web browser to download the client.
A company is considering updating the campus WAN connection. Which two WAN options are examples of the private WAN architecture? (Choose two.)
leased line cable digital subscriber line Ethernet WAN municipal Wi-Fi
leased line
Ethernet WAN
Which type of QoS marking is applied to Ethernet frames? IP precedence DSCP ToS CoS
CoS
Which is a characteristic of a Type 2 hypervisor?
does not require management console software
has direct access to server hardware resources
best suited for enterprise environments
installs directly on hardware
does not require management console software
What are the two types of VPN connections? (Choose two.)
PPPoE Frame Relay site-to-site remote access leased line
site-to-site
remote access
. What functionality does mGRE provide to the DMVPN technology?
It allows the creation of dynamically allocated tunnels through a permanent tunnel source at the hub and dynamically allocated tunnel destinations at the spokes.
It provides secure transport of private information over public networks, such as the Internet.
It is a Cisco software solution for building multiple VPNs in an easy, dynamic, and scalable manner.
It creates a distributed mapping database of public IP addresses for all VPN tunnel spokes.
It allows the creation of dynamically allocated tunnels through a permanent tunnel source at the hub and dynamically allocated tunnel destinations at the spokes.
What is used to pre-populate the adjacency table on Cisco devices that use CEF to process packets?
the FIB
the routing table
the ARP table
the DSP
the ARP table
. What command would be used as part of configuring NAT or PAT to display information about NAT configuration parameters and the number of addresses in the pool?
show running-config
show ip nat statistics
show ip cache
show version
show ip nat statistics
What is a purpose of establishing a network baseline?
It provides a statistical average for network performance.
It creates a point of reference for future network evaluations.
It manages the performance of network devices.
It checks the security configuration of network devices
It creates a point of reference for future network evaluations.
Which statement describes a characteristic of standard IPv4 ACLs?
They filter traffic based on source IP addresses only.
They can be created with a number but not with a name.
They are configured in the interface configuration mode.
They can be configured to filter traffic based on both source IP addresses and source ports.
They filter traffic based on source IP addresses only.
A company has contracted with a network security firm to help identify the vulnerabilities of the corporate network. The firm sends a team to perform penetration tests to the company network. Why would the team use applications such as John the Ripper,THC Hydra, RainbowCrack, and Medusa?
to capture and analyze packets within traditional Ethernet LANs or WLANs
to probe and test the robustness of a firewall by using specially created forged packets
to make repeated guesses in order to crack a password
to make repeated guesses in order to crack a password
What are two syntax rules for writing a JSON array? (Choose two.)
Each value in the array is separated by a comma.
The array can include only one value type.
A space must separate each value in the array.
A semicolon separates the key and list of values.
Values are enclosed in square brackets.
Each value in the array is separated by a comma.
Each value in the array is separated by a comma.
What is a characteristic of a Trojan horse as it relates to network security?
An electronic dictionary is used to obtain a password to be used to infiltrate a key network device.
Malware is contained in a seemingly legitimate executable program.
Extreme quantities of data are sent to a particular network device interface.
Too much information is destined for a particular memory block, causing additional memory areas to be affected
Malware is contained in a seemingly legitimate executable program.
An attacker is redirecting traffic to a false default gateway in an attempt to intercept the data traffic of a switched network. What type of attack could achieve this?
TCP SYN flood
DNS tunneling
DHCP spoofing
ARP cache poisoning
DHCP spoofing
A company is developing a security policy for secure communication. In the exchange of critical messages between a headquarters office and a branch office, a hash value should only be recalculated with a predetermined code, thus ensuring the validity of data source. Which aspect of secure communications is addressed?
data integrity
non-repudiation
origin authentication
data confidentiality
origin authentication
A company has contracted with a network security firm to help identify the vulnerabilities of the corporate network. The firm sends a team to perform penetration tests to the company network. Why would the team use packet sniffers?
to detect installed tools within files and directories that provide threat actors remote access and control over a computer or network
to detect any evidence of a hack or malware in a computer or network
to probe and test the robustness of a firewall by using specially created forged packets
to capture and analyze packets within traditional Ethernet LANs or WLANs
to capture and analyze packets within traditional Ethernet LANs or WLANs
An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 172.20.0.0 255.255.252.0. What wildcard mask would the administrator use in the OSPF network statement?
- 0.15.255
- 0.3.255
- 0.7.255
- 0.1.255
0.0.3.255
Match the HTTP method with the RESTful operation.
POST –» Create
GET –» Read
PUT/PATCH –» Update/Replace?Modify
Delete –» Delete
What is one reason to use the ip ospf priority command when the OSPF routing protocol is in use?
to activate the OSPF neighboring process
to influence the DR/BDR election process
to provide a backdoor for connectivity during the convergence process
to streamline and speed up the convergence process
to influence the DR/BDR election process
- An ACL is applied inbound on a router interface. The ACL consists of a single entry:
access-list 210 permit tcp 172.18.20.0 0.0.0.31 172.18.20.32 0.0.0.31 eq ftp .
If a packet with a source address of 172.18.20.14, a destination address of 172.18.20.40, and a protocol of 21 is received on the interface, is the packet permitted or denied?
permitted
What is a characteristic of the two-tier spine-leaf topology of the Cisco ACI fabric architecture?
The spine and leaf switches are always linked through core switches.
The spine switches attach to the leaf switches and attach to each other for redundancy.
The leaf switches always attach to the spines and they are interlinked through a trunk line.
The leaf switches always attach to the spines, but they never attach to each other.
The leaf switches always attach to the spines, but they never attach to each other.
Which two scenarios would result in a duplex mismatch? (Choose two.)
connecting a device with autonegotiation to another that is manually set to full-duplex
starting and stopping a router interface during a normal operation
connecting a device with an interface running at 100 Mbps to another with an interface running at 1000 Mbps
configuring dynamic routing incorrectly
manually setting the two connected devices to different duplex modes
connecting a device with autonegotiation to another that is manually set to full-duplex
manually setting the two connected devices to different duplex modes
A network technician is configuring SNMPv3 and has set a security level of auth . What is the effect of this setting?
authenticates a packet by a string match of the username or community string
authenticates a packet by using either the HMAC with MD5 method or the SHA method
authenticates a packet by using either the HMAC MD5 or 3.HMAC SHA algorithms and encrypts the packet with either the DES, 3DES or AES algorithms
authenticates a packet by using the SHA algorithm only
authenticates a packet by using either the HMAC with MD5 method or the SHA method
What are two types of attacks used on DNS open resolvers? (Choose two.)
amplification and reflection resource utilization fast flux ARP poisoning cushioning
amplification and reflection
resource utilization
An ACL is applied inbound on a router interface. The ACL consists of a single entry:
access-list 101 permit udp 192.168.100.0 0.0.2.255 64.100.40.0 0.0.0.15 eq telnet .
If a packet with a source address of 192.168.101.45, a destination address of 64.100.40.4, and a protocol of 23 is received on the interface, is the packet permitted or denied?
denied
Which type of resources are required for a Type 1 hypervisor?
a dedicated VLAN
a management console
a host operating system
a management console
In JSON, what is held within square brackets [ ]?
nested values
key/value pairs
an object
an array
an array
What are three components used in the query portion of a typical RESTful API request? (Choose three.)
resources protocol API server format key parameters
format
key
parameters
A user reports that when the corporate web page URL is entered on a web browser, an error message indicates that the page cannot be displayed. The help-desk technician asks the user to enter the IP address of the web server to see if the page can be displayed. Which troubleshooting method is being used by the technician?
top-down
bottom-up
divide-and-conquer
substitution
divide-and-conquer
Which protocol provides authentication, integrity, and confidentiality services and is a type of VPN?
MD5
AES
IPsec
ESP
IPsec
Which statement describes a characteristic of Cisco Catalyst 2960 switches?
They are best used as distribution layer switches.
New Cisco Catalyst 2960-C switches support PoE pass-through.
They are modular switches.
They do not support an active switched virtual interface (SVI) with IOS versions prior to 15.x.
New Cisco Catalyst 2960-C switches support PoE pass-through.
. Which component of the ACI architecture translates application policies into network programming?
the hypervisor
the Application Policy Infrastructure Controller
the Nexus 9000 switch
the Application Network Profile endpoints
the Application Policy Infrastructure Controller
Which two pieces of information should be included in a logical topology diagram of a network? (Choose two.)
device type cable specification interface identifier OS/IOS version connection type cable type and identifier
interface identifier
connection type
What are two benefits of using SNMP traps? (Choose two.)
They eliminate the need for some periodic polling requests.
They reduce the load on network and agent resources.
They limit access for management systems only.
They can provide statistics on TCP/IP packets that flow through Cisco devices.
They can passively listen for exported NetFlow datagrams.
They eliminate the need for some periodic polling requests.
They reduce the load on network and agent resources.
Which statement accurately describes a characteristic of IPsec?
IPsec works at the application layer and protects all application data.
IPsec is a framework of standards developed by Cisco that relies on OSI algorithms.
IPsec is a framework of proprietary standards that depend on Cisco specific algorithms.
IPsec works at the transport layer and protects data at the network layer.
IPsec is a framework of open standards that relies on existing algorithms.
IPsec is a framework of open standards that relies on existing algorithms.
In a large enterprise network, which two functions are performed by routers at the distribution layer? (Choose two.)
connect users to the network provide a high-speed network backbone connect remote networks provide Power over Ethernet to devices provide data traffic security
connect remote networks
provide data traffic security
Which two statements describe the use of asymmetric algorithms? (Choose two.)
Public and private keys may be used interchangeably.
If a public key is used to encrypt the data, a public key must be used to decrypt the data.
If a private key is used to encrypt the data, a public key must be used to decrypt the data.
If a public key is used to encrypt the data, a private key must be used to decrypt the data.
If a private key is used to encrypt the data, a private key must be used to decrypt the data.
If a private key is used to encrypt the data, a public key must be used to decrypt the data.
If a public key is used to encrypt the data, a private key must be used to decrypt the data.
What are two benefits of extending access layer connectivity to users through a wireless medium? (Choose two.)
reduced costs decreased number of critical points of failure increased flexibility increased bandwidth availability increased network management options
reduced costs
increased flexibility
What are two purposes of launching a reconnaissance attack on a network? (Choose two.)
to scan for accessibility
to retrieve and modify data
to gather information about the network and devices
to prevent other users from accessing the system
to escalate access privileges
to scan for accessibility
to gather information about the network and devices
A group of users on the same network are all complaining about their computers running slowly. After investigating, the technician determines that these computers are part of a zombie network. Which type of malware is used to control these computers?
botnet
spyware
virus
rootkit
botnet
An ACL is applied inbound on a router interface. The ACL consists of a single entry:
access-list 101 permit tcp 10.1.1.0 0.0.0.255 host 192.31.7.45 eq dns .
If a packet with a source address of 10.1.1.201, a destination address of 192.31.7.45, and a protocol of 23 is received on the interface, is the packet permitted or denied?
denied
What QoS step must occur before packets can be marked?
classifying
shaping
queuing
policing
classifying
What is the main function of a hypervisor?
It is used to create and manage multiple VM instances on a host machine.
It is a device that filters and checks security credentials.
It is a device that synchronizes a group of sensors.
It is software used to coordinate and prepare data for analysis.
It is used by ISPs to monitor cloud computing resources.
It is used to create and manage multiple VM instances on a host machine.
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?
Frame Relay
Ethernet WAN
VSAT
ISDN
Ethernet WAN
