Category: CCNA 1 v7

1. What two ICMPv6 message types must be permitted through IPv6 access control lists to allow resolution of Layer 3 addresses to Layer 2 MAC addresses? (Choose two.) neighbor solicitations echo requests neighbor advertisements echo replies router solicitations router advertisements 2. Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 ...

1. Which information is used by routers to forward a data packet toward its destination? source IP address destination IP address source data-link address destination data-link address 2. A computer has to send a packet to a destination host in the same LAN. How will the packet be sent? The packet will be sent to ...

1. What is the prefix length notation for the subnet mask 255.255.255.224? /25 /26 /27 /28 style=”background-attachment: initial; background-clip: initial; background-color: rgb(212, 237, 218) !important; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; border: 1px solid rgb(156, 202, 167); box-sizing: initial; color: rgb(21, 87, 36) !important; font-family: Helvetica, Arial, sans-serif; font-size: 17px; font-stretch: ...

1. Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer? The client sets the window size for the session. The client sends an ISN to the server to start the 3-way handshake. The client randomly selects a source port number. The client ...

1. Which component is designed to protect against unauthorized communications to and from a computer? security center port scanner antimalware antivirus firewall 2. Which command will block login attempts on RouterA for a period of 30 seconds if there are 2 failed login attempts within 10 seconds? RouterA(config)# login block-for 10 attempts 2 within 30 ...

1. A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting? SSH TFTP DHCP DNS 2. Refer to the exhibit. What does the value of the window size specify? the amount of data that can be sent at one time the amount ...

1. What is the purpose of the OSI physical layer? controlling access to media transmitting bits across the local media performing error detection on received frames exchanging frames between nodes over physical network media 2. Why are two strands of fiber used for a single fiber optic connection? The two strands allow the data to ...

1. During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer? DoS attack​ identity theft spyware zero-day attack 2. Which term refers to a network that provides secure ...