Networking II, Chapter 4

A local law firm is redisgning the company network so that all 20 employees can be connected to a LAn and to the Internet. The law firm would prefer a low-cost and easy solution for the project. What type of switch should be selected? A. Fixed configuration B. Modular configuration C. Stackable configuration D. StackPower E. StackWise

A A fixed-configuration switch would meet all of the requirements of the law firms.

What is one function of a Layer 2 switch? A. Determines which interface is used to forward a frame based on the destination MAC address B. Duplicates the electrical signal of each frame to every port C. Forwards data based on logical addressing D. Need for fewer power outlets

A A switch builds a MAC address table of MAC addresses and associated port numbers by examining the source MAC address found in inbound frames. To forward a frame onward, the switch examines the destination MAC address, looks in the MAC address for a port number associated with that destination MAC address, looks in the MAC address for a port number associated with that destination MAC address and sends it to the specific port. If the destination MAC address is not table, the switch forwards the frame out all ports except the inbound port that originated the frame.

Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure? (choose two.) A. User data traffic B. VoIP phone traffic C. Scanners and printers D. Mobile cell phone traffic E. Electrical system

A and B A converged network provides a single infrastructure that combines voice, video, and data. Analog phones, user data, and point-to-point video traffic are contained within the single network infrastructure of a converged network.

What are two advantages of modular switches over fixed-configuration switches? (choose two.) A. Increased scalability B. Lower cost per switch C. Lower forwarding rates D. need for fewer power outlets

A and D Fixed-configuration switches, although lower in price, have a designated number of ports and no ability to add ports. They also typically provide fewer high-speed ports. To scale switching on a network that consists of fixed-configuration switches, more switches need to be purchased. This increases the number of power outlets that need to be used. Modular switches can be scaled simply by purchasing additional line cards.

A network designer must provide a rationale to a customer for a design that will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make the better choice? (choose two.) A. Easier to provide redundant links to ensure higher availability B. Less required equipment to provide the same performance levels C. Lower bandwidth requirements D. Reduced cost for equipment and user training E. Simpler deloyment for additional switch equipment

A and E A hierarchical design for switches helps network administrators when planning and deploying a network deploying a network expansion, performing fault isolations when a problem occurs, and providing resiliency when traffic levels are high. A good hierarchical design has redundancy when it can be afforded so that one switch does no cause all networks to be down.

Which statement describes microsegmentation feature of a LAN switch? A. All ports inside the witch form one collision domain B. Each port forms a collision domain. C. Frame collisions are forwarded. D. The switch will not forward broadcast frames.

B

What criteria are used by a Cisco LAN switch to decide how to forward Ethernet Frames? A. Destination IP address B. Destination MAC address C. Egress port D. Path cost

B Cisco LAN switches use MAC address table to make decisions of traffic forwarding. The decisions are based on the ingress port and the destination MAC address of the frame. The ingress port information is important because it carries the VLAN to which the port belongs.

What is the basic function of the Cisco Borderless Architecture Distribution layer? A. Acting as a backbone B. Aggregating all the campus blocks C. Aggregating Layer 2 and Layer 3 routing boundaries D. Providing access to end-user devices

C One of the basic functions of distrubtion layer of Cisco Borderless Architecture is to perform routing between different VLANs. Acting as a backbone and aggregating campus blocks are function of the core layer. Providing access to end user devices is a function of the access layer.

A ____ network is one that uses the same infrastructure to carry voice, data, and video signals?

Converged

What is a collapsed core in a network design? A. A combination of the functionality of the access and core layers B. A combination of the functionality of the access and distribution layers C. A combination of the functionality of the access, distribution, and core layers D. A combination of the functionality of the distribution and core layers

D A collapsed core design appropriate for a small, single-building business. This type of design uses two layers (the collapsed core and distribution layers consolidated into one layer and the access layer). Larger businesses use the traditional three-tier switch design model.

Which network device can be used to elimination collisions on an Ethernet network? A. Firewall B. Hub C. Router D. Switch

D A switch provides microsegmentation so that no other device compete for the same Ethernet network badwidth

What is a definition of two-tier LAN network design? A. Access , distribution, and core layers collapsed into one tier, with a separate backbone layer B. Access and core layers collapsed into one tier, and the distribution layer on a separate tier C. Access and distribution layers collapsed into one tier, and the core layer on a separate tier. D. Distribution and core layers collapsed into one tier, and the access layer on a separate tier

D Maintaining three separate network tiers is not always required or cost-efficient. All network designs require an access layer, but a two-tier design can collapse the distribution and core layers into one layer to serve the needs of a small location with few users.

Which type of adderss does a switch use to build the MAC address table? A. Destination IP address B. Destination MAC address C. Source IP address D. Source MAC address

D When a switch receives a frame with a source MAC address that is not in the MAC table, the switch adds that MAC address to the table and maps that address to a specific port. Switches do not use IP addressing in the MAC address table.

What are two reasons a network administartor would segment a network with a Layer 2 switch? (choose two.) A. To crease fewer collison domains B. To create more broadcast domains C. To elimination virtual circuits D. To enhance user bandwidth E. To isolate ARP request message from the rest of the network F. To isolate traffic between segments

D and F A switch can create temporary point-to-point connections between the directly attached transmitting and receiving network devices. The two devices have full-bandwidth full duplex connectivity during the transmission. Segmenting adds collisions domains to reduce collisions