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Data Communications and Networking 4

Showing 76-140 of 140 answers

The show cdp neighbors detail command is used to obtain detailed information about directly connected Cisco neighbor devices.
  • True Correct
The show ip interface brief and show ipv6 interface brief commands are used to display the up or down status and IP address of all interfaces on a device.
  • True Correct
The show ip route and show ipv6 route commands are used to display the routing table in a router to learn the directly connected neighbors, more remote devices (through learned routes), and the routing protocols that have been configured.
  • True Correct
The show monitor command is used to verify the SPAN session.
  • True Correct
The use of BGP is most appropriate when an AS has connections to multiple autonomous systems.
  • True Correct
These switches provide an application-aware switching fabric and work with an APIC to manage the virtual and physical network infrastructure.
  • Cisco Nexus 9000 series switch Correct
This is a point established in a building or complex to separate customer equipment from service provider equipment
  • demarcation point Correct
This is typically regarded as the brains of a device.
  • control plane Correct
This type of SDN uses a centralized controller that has knowledge of all devices in the network.
  • Controller-based SDN Correct
To verify the state of a GRE tunnel, use the show interface tunnel command.
  • True Correct
Today, over __% of things in the physical world are still not connected to the Internet. Select the answer that will complete the statement.
  • 99 Correct
topology illustrates how devices are logically connected to the network, meaning how devices actually transfer data across the network when communicating with other devices.
  • logical network Correct
topology shows the physical layout of the devices connected to the network.
  • Physical network Correct
transmits bits from one computer to another and regulates the transmission of a stream of bits over the physical medium.
  • physical layer Correct
Under which condition does congestion occur on a converged network with voice, video, and data traffic?
  • if the request for bandwidth exceeds the amount of bandwidth available Correct
Use the show ip sla configuration operation-number command to display configuration values including all defaults for IP SLA operations or for a specific operation.
  • True Correct
VLAN attacks are controlled by disabling DTP and following basic guidelines for configuring trunk ports.
  • True Correct
What does the FIFO queuing stands for?
  • first-in first-out Correct
What does the WFQ automated scheduling method stands for?
  • weighted fair queuing Correct
What equipment at the cable service provider office connects the office to the subscriber locations?
  • CMTS Correct
What function does NCP perform in the establishment of a PPP session?
  • It completes the specific configuration of the network layer protocol that is being used. Correct
What happens when an edge router using IntServ QoS determines that the data pathway cannot support the level of QoS requested?
  • Data is not forwarded along the pathway. Correct
What happens when the memory queue of a device fills up and new network traffic is received?
  • he network device will drop the arriving packets. Correct
What is a characteristic of a WAN?
  • WAN service providers include carriers such as a telephone network or satellite service. Correct
What is a characteristic of data flow processing in SDN?
  • Each data flow through the network must be approved by the SDN controller first. Correct
What is a characteristic of the two-tier spine-leaf topology of the Cisco ACI fabric architecture?
  • The leaf switches always attach to the spines, but they never attach to each other. Correct
What is a disadvantage of leased lines?
  • high cost Correct
What is an advantage offered by GRE tunnels?
  • support for IP multicast tunneling Correct
What is an example of an M2M connection?
  • a sensor in a garbage can signaling that it is full and delivering the data to a GPS mapping system for the sanitation truck to adjust its route for pickups Correct
What is an SNMP management agent?
  • software that is installed on devices managed by SNMP Correct
What is Fog computing?
  • It is a type of computing where services are hosted where they are used, such as at the network edge or with end devices. Correct
What is the default queuing method used on the LAN interfaces of Cisco devices?
  • FIFO Correct
What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?
  • PPPoE Correct
What mitigation plan is best for thwarting a DoS attack that is creating a switch buffer overflow?
  • Enable port security Correct
What range of IP addresses is represented by the network and wildcard mask 192.168.70.0 0.0.0.127?
  • 192.168.70.0 to 192.168.70.127 Correct
What TCP port is used by BGP to exchange messages between routers?
  • 179 Correct
When a PPPoE configuration is being verified, which command can be used to verify the MTU size and encapsulation type configured on a Cisco router?
  • show interface dialer 1 Correct
When is the most appropriate time to measure network operations to establish a network performance baseline?
  • at the same time each day across a set period of average working days, so that typical traffic patterns can be established Correct
Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?
  • authentication Correct
Which Cloud computing service would be best for an organization that needs to collaboratively create applications and deliver them over the web?
  • PaaS Correct
Which command runs several other show commands in order to generate many pages of detailed troubleshooting information?
  • show tech-support Correct
Which component in a traditional infrastructure device provides Layer 2 and Layer 3 functions to create data paths within a network?
  • control plane Correct
Which feature sends simulated data across the network and measures performance between multiple network locations?
  • IP SLA Correct
Which IPv4 address range covers all IP addresses that match the ACL filter specified by 172.16.2.0 with wildcard mask 0.0.1.255?
  • 172.16.2.0 to 172.16.3.255   Correct
Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?
  • fiber optic Correct
Which mode is used to configure SNMP?
  • global configuration mode Correct
Which model is the only QoS model with no mechanism to classify packets?
  • best-effort Correct
Which network traffic management technology is a basic element in SDN implementations?
  • OpenFlow Correct
Which one of the WAN technologies is inadequate for video traffic but operates adequately for voice traffic?
  • ISDN BRI Correct
Which PPP option enables load balancing on PPP-enabled interfaces that connect to a single destination?
  • Multilink Correct
Which PPP protocol allows a device to specify an IP address for routing over the PPP link?
  • IPCP Correct
Which protocol is used by PPP to provide authentication and protection from playback attacks?
  • CHAP Correct
Which public WAN technology provides security by using encrypted tunnels over Internet connections?
  • VPN Correct
Which queuing method provides user-defined traffic classes where each traffic class has a FIFO queue?
  • CBWFQ Correct
Which service is enabled on a Cisco router by default that can reveal significant information about the router and potentially make it more vulnerable to attack?
  • CDP Correct
Which statement correctly describes a WAN technology?
  • MPLS can be used to deliver any type of packet between sites. Correct
Which statement describes a characteristic of standard IPv4 ACLs?
  • They filter traffic based on source IP addresses only. Correct
Which statement describes a difference between the operation of inbound and outbound ACLs?
  • Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed. Correct
Which statement describes the physical topology for a LAN?
  • It defines how hosts and network devices connect to the LAN. Correct
Which statement describes the QoS classification and marking tools?
  • Marking is the adding of a value to a packet header. Correct
Which term describes the data exchanges between virtual servers in a data center?
  • east-west traffic Correct
Which troubleshooting tool can be used to pinpoint the distance to a break in a network cable?
  • cable tester Correct
Which type of traffic does Cisco recommend be placed in the strict priority queue (PQ) when low latency queuing (LLQ) is being used?
  • voice Correct
Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits?
  • ATM Correct
With which layers of the OSI model do the PPP control protocols interface?
  • NCP interfaces with Layer 3; LCP interfaces with Layer 1 Correct
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