monday baby Flashcards
(113 cards)
1
Q
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
A
*the use of the building switch block approach
2
Q
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
A
- the configuration register value
* the startup configuration file
3
Q
What type of network uses one common infrastructure to carry voice, data, and video signals?
borderless
converged
managed
switched
A
*converged
4
Q
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
A
- 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
5
Q
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
- 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.
6
Q
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.
A
- 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.
7
Q
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.
A
*All routers are in the backbone area.
8
Q
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
*a network infrastructure that provides access to other networks over a large geographic area
9
Q
What is a purpose of establishing a network baseline?
It creates a point of reference for future network evaluations.
It provides a statistical average for network performance.
It checks the security configuration of network devices.
It manages the performance of network devices.
A
*It creates a point of reference for future network evaluations.
10
Q
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
A
*hello
11
Q
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
- A virus can be dormant and then activate at a specific time or date.
- A virus typically requires end-user activation.
12
Q
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
A
*DSL
13
Q
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
A
*Ethernet WAN
14
Q
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
A
*to reverse engineer binary files when writing exploits and when analyzing malware
15
Q
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.
A
*Two devices connected to the router have IP addresses of 192.168.10. x .
16
Q
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
A
*clear ip nat translation
17
Q
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.
A
- Video traffic latency should not exceed 400 ms.
* Video traffic is unpredictable and inconsistent.
18
Q
Refer to the exhibit. A technician is configuring R2 for static NAT to allow the client to access the web server. What is a possible reason that the client PC cannot access the web server?
The IP NAT statement is incorrect.
Interface Fa0/1 should be identified as the outside NAT interface.
Interface S0/0/0 should be identified as the outside NAT interface.
The configuration is missing a valid access control list.
A
*Interface S0/0/0 should be identified as the outside NAT interface.
19
Q
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
A
*NAT
20
Q
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
A
*virtualization
21
Q
Refer to the exhibit. Which address or addresses represent the inside global address?
192.168.0.100
10.1.1.2
any address in the 10.1.1.0 network
209.165.20.25
A
*209.165.20.25
22
Q
Which two IPsec protocols are used to provide data integrity?
MD5 DH AES SHA RSA
A
- MD5
* SHA
23
Q
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.
A
*The host initiates a clientless VPN connection using a compliant web browser to download the client.
24
Q
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
A
- leased line
* Ethernet WAN
25
Which type of QoS marking is applied to Ethernet frames?
IP precedence
DSCP
ToS
CoS
*CoS
26
Refer to the exhibit. Routers R1 and R2 are connected via a serial link. One router is configured as the NTP master, and the other is an NTP client. Which two pieces of information can be obtained from the partial output of the show ntp associations detail command on R2? (Choose two.)
Both routers are configured to use NTPv2.
Router R1 is the master, and R2 is the client
The IP address of R2 is 192 168.1.2.
Router R2 is the master, and R1 is the client
The IP address of R1 is 192.168.1.2
* Router R1 is the master, and R2 is the client
| * The IP address of R1 is 192.168.1.2
27
Refer to the exhibit. The network administrator that has the IP address of 10.0.70.23/25 needs to have access to the corporate FTP server (10.0.54.5/28). The FTP server is also a web server that is accessible to all internal employees on networks within the 10.x.x.x address. No other traffic should be allowed to this server. Which extended ACL would be used to filter this traffic, and how would this ACL be applied? (Choose two.)
R1(config)# interface s0/0/0
R1(config-if)# ip access-group 105 outR2(config)# interface gi0/0
R2(config-if)# ip access-group 105 in
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 20
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 21
access-list 105 permit tcp 10.0.0.0 0.255.255.255 host 10.0.54.5 eq www
access-list 105 deny ip any host 10.0.54.5
access-list 105 permit ip any any
access-list 105 permit ip host 10.0.70.23 host 10.0.54.5
access-list 105 permit tcp any host 10.0.54.5 eq www
access-list 105 permit ip any any
R1(config)# interface gi0/0
R1(config-if)# ip access-group 105 out
access-list 105 permit tcp host 10.0.54.5 any eq www
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 20
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 21
*access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 20
access-list 105 permit tcp host 10.0.70.23 host 10.0.54.5 eq 21
access-list 105 permit tcp 10.0.0.0 0.255.255.255 host 10.0.54.5 eq www
access-list 105 deny ip any host 10.0.54.5
access-list 105 permit ip any any
*R1(config)# interface gi0/0
R1(config-if)# ip access-group 105 out
28
Refer to the exhibit. If the network administrator created a standard ACL that allows only devices that connect to the R2 G0/0 network access to the devices on the R1 G0/1 interface, how should the ACL be applied?
inbound on the R2 G0/0 interface
outbound on the R1 G0/1 interface
inbound on the R1 G0/1 interface
outbound on the R2 S0/0/1 interface
*outbound on the R1 G0/1 interface
29
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
30
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
31
Refer to the exhibit. What three conclusions can be drawn from the displayed output? (Choose three.)
The DR can be reached through the GigabitEthernet 0/0 interface.
There have been 9 seconds since the last hello packet sent.
This interface is using the default priority.
The router ID values were not the criteria used to select the DR and the BDR.
The router ID on the DR router is 3.3.3.3
The BDR has three neighbors.
* The DR can be reached through the GigabitEthernet 0/0 interface.
* There have been 9 seconds since the last hello packet sent.
* The router ID values were not the criteria used to select the DR and the BDR.
32
Refer to the exhibit. A network administrator is configuring an ACL to limit the connection to R1 vty lines to only the IT group workstations in the network 192.168.22.0/28. The administrator verifies the successful Telnet connections from a workstation with IP 192.168.22.5 to R1 before the ACL is applied. However, after the ACL is applied to the interface Fa0/0, Telnet connections are denied. What is the cause of the connection failure?
The enable secret password is not configured on R1.
The IT group network is included in the deny statement.
The permit ACE specifies a wrong port number.
The permit ACE should specify protocol ip instead of tcp.
The login command has not been entered for vty lines.
*The IT group network is included in the deny statement.
33
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.
34
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
35
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
36
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.
37
devices and inside wiring that are located on the enterprise edge and connect to a carrier link
CPE
DCE
DTE
local loop
*CPE
38
devices that provide an interface for customers to connect to within the WAN cloud
CPE
DCE
DTE
local loop
*DCE
39
customer devices that pass the data from a customer network for transmission over the WAN
CPE
DCE
DTE
local loop
*DTE
40
a physical connection from the customer to the service provider POP
CPE
DCE
DTE
local loop
*local loop
41
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.
42
Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?
NAT-POOL2 is not bound to ACL 1.
Interface Fa0/0 should be identified as an outside NAT interface.
The NAT pool is incorrect.
Access-list 1 is misconfigured.
*NAT-POOL2 is not bound to ACL 1.
43
Refer to the exhibit. What method can be used to enable an OSPF router to advertise a default route to neighboring OSPF routers?
Use a static route pointing to the ISP and redistribute it.
Use a static route pointing to the ISP and redistribute it.
Use the redistribute static command on R0-A.
Use the default-information originate command on ISP.
Use the default-information originate command on R0-A.
*Use the default-information originate command on R0-A.
44
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
45
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.
| * Values are enclosed in square brackets.
46
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 affecte
*Malware is contained in a seemingly legitimate executable program.
47
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
48
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 addresse
data integrity
non-repudiation
origin authentication
data confidentiality
*origin authentication
49
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
50
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. 0.15.255
0. 0.3.255
0. 0.7.255
0. 0.1.255
*0.0.3.255
51
Match the HTTP method with the RESTful operation.
POST –>> Create
GET –>> Read
PUT/PATCH –>> Update/Replace?Modify
Delete –>> Delete
52
Refer to the exhibit. What is the OSPF cost to reach the West LAN 172.16.2.0/24 from East?
*65
53
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
54
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
deny
*permitted
55
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.
56
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
57
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 the SHA algorithm only
58
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
| * ARP poisoning
59
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
permitted
*permitted
60
Which type of resources are required for a Type 1 hypervisor?
a dedicated VLAN
a management console
a host operating system
*a host operating system
61
In JSON, what is held within square brackets [ ]?
nested values
key/value pairs
an object
an array
*an object
62
What are three components used in the query portion of a typical RESTful API request? (Choose three.)
```
resources
protocol
API server
format
key
parameters
```
* resources
* key
* parameters
63
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
64
Which protocol provides authentication, integrity, and confidentiality services and is a type of VPN?
MD5
AES
IPsec
ESP
*IPsec
65
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.
66
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
67
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
```
* interface identifier
| * connection type
68
Refer to the exhibit. A PC at address 10.1.1.45 is unable to access the Internet. What is the most likely cause of the problem?
The NAT pool has been exhausted.
The wrong netmask was used on the NAT pool.
Access-list 1 has not been configured properly.
The inside and outside interfaces have been configured backwards.
*The NAT pool has been exhausted.
69
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.
70
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.
71
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
72
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.
73
Refer to the exhibit. A network administrator has deployed QoS and has configured the network to mark traffic on the VoIP phones as well as the Layer 2 and Layer 3 switches. Where should initial marking occur to establish the trust boundary?
Trust Boundary 4
Trust Boundary 3
Trust Boundary 1
Trust Boundary 2
*Trust Boundary 1
74
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
75
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
76
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
77
. Refer to the exhibit. A technician is configuring R2 for static NAT to allow the client to access the web server. What is a possible reason that the client PC cannot access the web server?
The IP NAT statement is incorrect.
Interface Fa0/1 should be identified as the outside NAT interface.
Interface S0/0/0 should be identified as the outside NAT interface.
The configuration is missing a valid access control list.
*Interface S0/0/0 should be identified as the outside NAT interface.
78
Refer to the exhibit. From which location did this router load the IOS?
```
flash memory
NVRAM?
RAM
ROM
a TFTP server?
```
*flash memory
79
Refer to the exhibit. Which data format is used to represent the data for network automation applications?
XML
YAML
HTML
JSON
*JSON
80
What QoS step must occur before packets can be marked?
classifying
shaping
queuing
policing
*classifying
81
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.
82
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
83
Refer to the exhibit. As traffic is forwarded out an egress interface with QoS treatment, which congestion avoidance technique is used?
traffic shaping
weighted random early detection
classification and marking
traffic policing
*traffic policing
84
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 10.1.3.8 eq dns .
If a packet with a source address of 10.1.3.8, a destination address of 10.10.3.8, and a protocol of 53 is received on the interface, is the packet permitted or denied?
denied
permitted
*denied
85
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 are allowed into the router
defines which addresses can be translated
defines which addresses are assigned to a NAT pool
defines which addresses are allowed out of the router
*defines which addresses can be translated
86
If a router has two interfaces and is routing both IPv4 and IPv6 traffic, how many ACLs could be created and applied to it?
```
12
4
8
16
6
```
*8
87
Refer to the exhibit. An administrator first configured an extended ACL as shown by the output of the show access-lists command. The administrator then edited this access-list by issuing the commands below.
Router(config)# ip access-list extended 101
Router(config-ext-nacl)# no 20
Router(config-ext-nacl)# 5 permit tcp any any eq 22
Router(config-ext-nacl)# 20 deny udp any any
Which two conclusions can be drawn from this new configuration? (Choose two.)
```
TFTP packets will be permitted.
Ping packets will be permitted.
Telnet packets will be permitted.
SSH packets will be permitted.
All TCP and UDP packets will be denied.
```
* Ping packets will be permitted.
| * SSH packets will be permitted.
88
Which troubleshooting approach is more appropriate for a seasoned network administrator rather than a less-experienced network administrator?
a less-structured approach based on an educated guess
an approach comparing working and nonworking components to spot significant differences
a structured approach starting with the physical layer and moving up through the layers of the OSI model until the cause of the problem is identified
an approach that starts with the end-user applications and moves down through the layers of the OSI model until the cause of the problem has been identified
*a less-structured approach based on an educated guess
89
Which three statements are generally considered to be best practices in the placement of ACLs? (Choose three.)
Filter unwanted traffic before it travels onto a low-bandwidth link.
Place standard ACLs close to the destination IP address of the traffic.
Place standard ACLs close to the source IP address of the traffic.
Place extended ACLs close to the destination IP address of the traffic.
Place extended ACLs close to the source IP address of the traffic.
For every inbound ACL placed on an interface, there should be a matching outbound ACL
* Filter unwanted traffic before it travels onto a low-bandwidth link.
* Place standard ACLs close to the destination IP address of the traffic.
* Place extended ACLs close to the source IP address of the traffic.
90
Refer to the exhibit. An administrator is trying to configure PAT on R1, but PC-A is unable to access the Internet. The administrator tries to ping a server on the Internet from PC-A and collects the debugs that are shown in the exhibit. Based on this output, what is most likely the cause of the problem?
The inside and outside NAT interlaces have been configured backwards
The inside global address is not on the same subnet as the ISP
The address on Fa0/0 should be 64.100.0.1.
The NAT source access list matches the wrong address range.
* The inside and outside NAT interlaces have been configured backwards
* The inside global address is not on the same subnet as the ISP
91
Why is QoS an important issue in a converged network that combines voice, video, and data communications?
Data communications must be given the first priority.
Voice and video communications are more sensitive to latency.
Legacy equipment is unable to transmit voice and video without QoS.
Data communications are sensitive to jitter.
*Voice and video communications are more sensitive to latency.
92
Which statement describes a VPN?
VPNs use logical connections to create public networks through the Internet.
VPNs use open source virtualization software to create the tunnel through the Internet.
VPNs use dedicated physical connections to transfer data between remote users.
VPNs use virtual connections to create a private network through a public network.
*VPNs use virtual connections to create a private network through a public network.
93
. 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?
substitution
bottom-up
divide-and-conquer
top-down
*divide-and-conquer
94
Two corporations have just completed a merger. The network engineer has been asked to connect the two corporate networks without the expense of leased lines. Which solution would be the most cost effective method of providing a proper and secure connection between the two corporate networks?
```
Cisco Secure Mobility Clientless SSL VPN
Frame Relay
remote access VPN using IPsec
Cisco AnyConnect Secure Mobility Client with SSL
site-to-site VPN
```
*site-to-site VPN
95
What is the final operational state that will form between an OSPF DR and a DROTHER once the routers reach convergence?
loading
established
full
two-way
*full
96
Refer to the exhibit. If the switch reboots and all routers have to re-establish OSPF adjacencies, which routers will become the new DR and BDR?
Router R4 will become the DR and router R1 will become the BDR.
Router R2 will become the DR and router R3 will become the BDR.
Router R1 will become the DR and router R2 will become the BDR.
Router R4 will become the DR and router R3 will become the BDR.
*Router R4 will become the DR and router R1 will become the BDR.
97
Which type of server would be used to keep a historical record of messages from monitored network devices?
```
DNS
print
DHCP
syslog
authentication
```
*syslog
98
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?
non-repudiation
data integrity
data confidentiality
origin authentication
*origin authentication
99
In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?
```
Determine ownership.
Determine the symptoms.
Narrow the scope.
Document the symptoms.
Gather information.
```
*Narrow the scope.
100
What protocol sends periodic advertisements between connected Cisco devices in order to learn device name, IOS version, and the number and type of interfaces?
CDP
SNMP
NTP
LLDP
*CDP
101
An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 192.168.0.0 255.255.252.0. What wildcard mask would the administrator use in the OSPF network statement?
0. 0.0.127
0. 0.0.31
0. 0.3.255
0. 0.0.63
*0.0.3.255
102
Where should the administrator place this ACL for the most efficient use of network resources?
inbound on router A Fa0/0
outbound on router B Fa0/0
outbound on router A Fa0/1
inbound on router B Fa0/1
*inbound on router A Fa0/0
103
Which type of OSPFv2 packet is used to forward OSPF link change information?
link-state acknowledgment
link-state update
hello
database description
*link-state update
104
What protocol synchronizes with a private master clock or with a publicly available server on the internet?
MPLS
CBWFQ
TFTP
NTP
*NTP
105
efer to the exhibit. A technician is configuring R2 for static NAT to allow the client to access the web server. What is a possible reason that the client PC cannot access the web server?
The IP NAT statement is incorrect.
Interface Fa0/1 should be identified as the outside NAT interface.
Interface S0/0/0 should be identified as the outside NAT interface.
The configuration is missing a valid access control list.
*Interface S0/0/0 should be identified as the outside NAT interface
106
An OSPF router has three directly connected networks; 10.0.0.0/16, 10.1.0.0/16, and 10.2.0.0/16. Which OSPF network command would advertise only the 10.1.0.0 network to neighbors?
router(config-router)# network 10.1.0.0 0.0.255.255 area 0
router(config-router)# network 10.1.0.0 0.0.15.255 area 0
router(config-router)# network 10.1.0.0 255.255.255.0 area 0
router(config-router)# network 10.1.0.0 0.0.0.0 area 0
*router(config-router)# network 10.1.0.0 0.0.255.255 area 0
107
Refer to the exhibit. Which sequence of commands should be used to configure router A for OSPF?
router ospf 1
network 192.168.10.0 area 0
router ospf 1
network 192.168.10.0
router ospf 1
network 192.168.10.64 255.255.255.192
network 192.168.10.192 255.255.255.252
router ospf 1
network 192.168.10.64 0.0.0.63 area 0
network 192.168.10.192 0.0.0.3 area 0
*router ospf 1
network 192.168.10.64 0.0.0.63 area 0
network 192.168.10.192 0.0.0.3 area 0
108
An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 192.168.0.0 255.255.254.0. What wildcard mask would the administrator use in the OSPF network statement?
0. 0.7.255
0. 0.1.255
0. 0.3.255
0. 0.15.255
*0.0.1.255
109
How does virtualization help with disaster recovery within a data center?
improvement of business practices
supply of consistent air flow
support of live migration
guarantee of power
*support of live migration
110
Refer to the exhibit. If no router ID was manually configured, what would router R1 use as its OSPF router ID?
10. 0.0.1
10. 1.0.1
192. 168.1.100
209. 165.201.1
108. Refer to the exhibit. Which devices exist in the failure domain when switch S3 loses power?
```
S4 and PC_2
PC_3 and AP_2
AP_2 and AP_1
PC_3 and PC_2
S1 and S4
```
*PC_3 and AP_2
111
Which set of access control entries would allow all users on the 192.168.10.0/24 network to access a web server that is located at 172.17.80.1, but would not allow them to use Telnet?
access-list 103 deny tcp host 192.168.10.0 any eq 23
access-list 103 permit tcp host 192.168.10.1 eq 80
access-list 103 permit tcp 192.168.10.0 0.0.0.255 host 172.17.80.1 eq 80
access-list 103 deny tcp 192.168.10.0 0.0.0.255 any eq 23
access-list 103 permit tcp 192.168.10.0 0.0.0.255 any eq 80
access-list 103 deny tcp 192.168.10.0 0.0.0.255 any eq 23
access-list 103 permit 192.168.10.0 0.0.0.255 host 172.17.80.1
access-list 103 deny tcp 192.168.10.0 0.0.0.255 any eq telnet
*access-list 103 permit tcp 192.168.10.0 0.0.0.255 host 172.17.80.1 eq 80
access-list 103 deny tcp 192.168.10.0 0.0.0.255 any eq 23
112
Refer to the exhibit. A network administrator needs to add an ACE to the TRAFFIC-CONTROL ACL that will deny IP traffic from the subnet 172.23.16.0/20. Which ACE will meet this requirement?
5 deny 172.23.16.0 0.0.15.255
5 deny 172.23.16.0 0.0.255.255
15 deny 172.23.16.0 0.0.15.255
30 deny 172.23.16.0 0.0.15.255
*5 deny 172.23.16.0 0.0.15.255
113
Which step in the link-state routing process is described by a router building a link-state database based on received LSAs?
executing the SPF algorithm
building the topology table
selecting the router ID
declaring a neighbor to be inaccessible
*building the topology table
