Cisco CCNA 200-301 Questions & Answers

• Question 751:

  Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibit represents this design, with all hosts configured in the same VLAN. What conclusions can be made about this design?

  

  A. This design will function as intended.

  B. Spanning-tree will need to be used.

  C. The router will not accept the addressing scheme.

  D. The connection between switches should be a trunk.

  E. The router interfaces must be encapsulated with the 802.1Q protocol.

  Correct Answer: C

  Each interface on a router must be in a different network. If two interfaces are in the same network, the router will not accept it and show error when the administrator assigns it.

• Question 752:

  Which technique can you use to route IPv6 traffic over an IPv4 infrastructure?

  A. NAT

  B. 6 to 4 tunneling

  C. L2TPv3

  D. dual-stack

  Correct Answer: B

  Overlay tunneling encapsulates IPv6 packets in IPv4 packets for delivery across an IPv4 infrastructure (a core network or the figure below). By using overlay tunnels, you can communicate with isolated IPv6 networks without upgrading the IPv4 infrastructure between them. Overlay tunnels can be configured between border devices or between a border device and a host; however, both tunnel endpoints must support both the IPv4 and IPv6 protocol stacks. IPv6 supports the following types of overlay tunneling mechanisms:

  1 Manual 2 Generic routing encapsulation (GRE) 3 IPv4-compatible 4 6to4 5 Intrasite Automatic Tunnel Addressing Protocol (ISATAP)

• Question 753:

  You are configuring your edge routers interface with a public IP address for Internet connectivity. The router needs to obtain the IP address from the service provider dynamically. Which command is needed on interface FastEthernet 0/0 to accomplish this?

  A. ip default-gateway

  B. ip route

  C. ip default-network

  D. ip address dhcp

  E. ip address dynamic

  Correct Answer: D

  obtain the IP address from the service provider dynamically means obtaining an IP address from a DHCP server.

• Question 754:

  Which component of an Ethernet frame is used to notify a host that traffic is coming?

  A. start of frame delimiter

  B. Type field

  C. preamble

  D. Data field

  Correct Answer: C

  The component of an Ethernet frame that is used to notify a host that traffic is coming is the preamble. The preamble is a sequence of bits that is transmitted at the beginning of an Ethernet frame and is used to alert the receiving host that a frame is about to be transmitted.

  The preamble consists of a series of alternating 1s and 0s, followed by a start-of-frame delimiter (SFD). The SFD is a unique pattern of bits that indicates the start of the frame and allows the receiving host to synchronize its clock with the sender's clock. The preamble and SFD together make up the preamble field of the Ethernet frame.

  After the preamble, the Ethernet frame consists of several other fields, including the destination and source MAC addresses, the type field, and the data field. The data field contains the payload of the frame, which can be a variety of different types of data, such as IP packets or application data.

  The preamble is important because it allows the receiving host to prepare for the arrival of the frame and ensures that the frame is properly received and processed. Without the preamble, the receiving host may not be aware that a frame is being transmitted, which could result in lost or corrupted data.

• Question 755:

  Refer to the exhibit. What is the subnet mask for route 172.16.4.0?

  

  A. 255.255.255.192

  B. 255.255.254.0

  C. 255.255.248.0

  D. 255.255.240.0

  Correct Answer: C

• Question 756:

  Refer to the exhibit. How much OSPF be configured on the GigabitEthernet0/0 interface of the neighbor device to achieve the destined neighbor relationship?

  

  A. Router(config)#interface GigabitEthernet 0/0 Router(config-if)#ip ospf cost 5

  B. Router(config)#interface GigabitEthernet 0/0 Router(config-if)#ip ospf priority 1

  C. Router(config)#interface GigabitEthernet 0/0 Router(config-if)#ip ospf area 2

  D. Router(config)#interface GigabitEthernet 0/0 Router(config-if)#ip ospf network point-to-point

  Correct Answer: D

  point to point no dr/bdr election----- connection ppp/hdlc h10 d40 broadcast use dr/bdr election-----connection eth/FDDI h10 d40

• Question 757:

  What is a characteristic of private IPv4 addressing?

  A. is used when the ISP requires the new subnet to be advertised to the internet for web services

  B. allows multiple companies to use the same addresses without conflict

  C. is used on the external interface of a firewall

  D. allows endpoints to communicate across public network boundaries

  Correct Answer: B

• Question 758:

  What is the destination MAC address of a broadcast frame?

  A. 00:00:0c:07:ac:01

  B. ff:ff:ff:ff:ff:ff

  C. 43:2e:08:00:00:0c

  D. 00:00:0c:43:2e:08

  E. 00:00:0c:ff:ff:ff

  Correct Answer: B

  Ref: Broadcast Frame - an overview | ScienceDirect Topics

  Cisco IOS Switch Basics

  Switch Concepts Broadcasts… Layer 2 broadcast frames have a destination Media Access Control (MAC) address of FF:FF:FF:FF:FF:FF and Layer 3 broadcast addresses have a destination Internet Protocol (IP) address that is set for the broadcast of that particular network (the address varies, so don't always assume that an IP address ending with 255 is the broadcast address).

• Question 759:

  For what two purposes does the Ethernet protocol use physical addresses?

  A. to uniquely identify devices at Layer 2

  B. to allow communication with devices on a different network

  C. to differentiate a Layer 2 frame from a Layer 3 packet

  D. to establish a priority system to determine which device gets to transmit first

  E. to allow communication between different devices on the same network

  F. to allow detection of a remote device when its physical address is unknown

  Correct Answer: AE

  Transmission Control Protocol/Internet Protocol Packet Analysis … In a LAN, each node is assigned a physical address, also known as a MAC/Ethernet address. This address is unique to each of the nodes on the LAN and is 6 bytes (48 bits) long, which is burned on the Ethernet card (also known as the network interface card). Ethernet is a byte-count protocol. A node on a LAN broadcasts a frame that is heard by all other nodes; only the node whose Ethernet address matches with the DA in the Ethernet frame copies the frame into its buffer.

• Question 760:

  Which two cable types must be used to connect an access point to the WLC when 2.5-Gbps and 5-Gbps upload speeds are required? (Choose two.)

  A. 10GBASE-T

  B. 1000BASE-LX/LH

  C. Cat 5e

  D. Cat 5

  E. Cat 3

  Correct Answer: AC

  A more viable option is to upgrade your Cat5e cable without ever touching a wall. This is the approach that Cisco and the NBASE-T Alliance have taken to give us an immediate and cost effective solution. Thanks to their work, there is now a solution where you can get 2.5 and even 5 Gbps across existing Cat5e cable.

  https://www.mercadoit.com/blog/noticias-it/como-cisco-catalyst-multigigabit-puede-aumentar-las-velocidades-de-red/