CCNA4

An organization has purchased a Frame Relay service from a provider. The service agreement specifies that the access rate is 512 kbps, the CIR is 384 kbps, and the Bc is 32 kbps. What will happen when the customer sends a short burst of frames above 450 kbps? The frames are marked with the DE bit set to 1 and are most likely forwarded. The frames are marked with the DE bit set to 0 and are most likely forwarded. The frames are marked with the DE bit set to 0 and are allowed to pass. ...

When QoS is implemented in a converged network, which two factors can be controlled to improve network performance for real-time traffic? (Choose two.) Answer: Delay, Jitter A network engineer performs a ping test and receives a value that shows the time it takes for a packet to travel from a source to a destination device and return. Which term describes the value Answer: Latency 2 Characteristics of Voice Traffic Answer: Dropped voice packets not re-transmitted, l...

Point-to-Point Answer: Typically dedicated T1/E1 lines involving a Layer 2 transport service through service provider network. (Acts as if direct physical link) Hub-and-Spoke Answer: Private connection between multiple sites. A single hub interface is shared by all spoke circuits. (single-homed topology) Full Mesh Answer: Any site can communicate directly with any other site but at cost of needing many virtual circuits. Dual-homed Topology Answer: Two hub...

Point-to-Point Protocol Answer: A Layer 2 WAN protocol that provides router-to-router and host-to-network connections over synchronous and asynchronous circuits. clock skew Answer: A clock's frequency difference, or the first derivative of its offset with respect to time. time-division multiplexing Answer: A technique in which information from multiple channels can be allocated bandwidth on a single wire based on preassigned time slots. Bandwidth is allocated to ea...

-Set the command history buffer size. -Recall previously entered commands. Which tasks can be accomplished by using the command history feature? (Two answers) Load a power-on self-test program. What is the first action in the boot sequence when a switch is powered on? Physical access to the router. What must an administrator have in order to reset a lost password on a router? username username secret secret When configuring a switch for SSH access, what other command that is associated w...

A. displaying OSPF-related interface information What is the purpose of the show ip ospf interface command? A. displaying OSPF-related interface information B. displaying general information about OSPF routing processes C. displaying OSPF neighbor information on a per-interface basis D. displaying OSPF neighbor information on a per-interface-type basis C. It divides a reference bandwidth of 100 Mbps by the actual bandwidth of the existing interface to calculate the router with the lowest...

Which two statements about DSL are true? (Choose two.) users are on a shared medium uses RF signal transmission local loop can be up to 3.5 miles (5.5km) physical and data link layers are defined by DOCSIS user connections are aggregated at a DSLAM located at the CO Answer: -local loop can be up to 3.5 miles (5.5km)* -user connections are aggregated at a DSLAM located at the CO* Which two statements are true regarding a PPP connection between two Cisco routers? (Choose t...