2 chast

What service is provided by HTTP?

A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

1)The ARP request is sent as a broadcast, and will flood the entire subnet. 2)All ARP request messages must be processed by all nodes on the local network.

Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

1)enables IPv4 and IPv6 to utilize the same physical medium 2)places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame 3)(handle)

What two security solutions are most likely to be used only in a corporate environment? (Choose two.)

1)virtual private networks 2)intrusion prevention systems

What are two features of ARP? (Choose two.)

1.If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. 2.If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.128

A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?

255.255.255.248

What happens when the transport input ssh command is entered on the switch vty lines?

Communication between the switch and remote users is encrypted.

An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)

Configure the IP domain name on the router. Generate the SSH keys. Enable inbound vty SSH sessions.

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

DHCP

A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting?

HTTP

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

What is an advantage for small organizations of adopting IMAP instead of POP?

Messages are kept in the mail servers until they are manually deleted from the email client.

What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.)

Neighbor Solicitation Router Advertisement

What service is provided by POP3?

Retrieves email from the server by downloading the email to the local mail application of the client.

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

SSH

A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?

TFTP

What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall?

Trojan horse

What will happen if the default gateway address is incorrectly configured on a host?

The host cannot communicate with hosts in other networks.

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

application session presentation

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?

The switch can be remotely managed from a host on another network.

What are the two most effective ways to defend against malware? (Choose two.)

Update the operating system and other application software. Install and update antivirus software.

What characteristic describes antispyware?

applications that protect end devices from becoming infected with malicious software

What characteristic describes antivirus software?

applications that protect end devices from becoming infected with malicious software

Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?

frame check sequence field

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

nslookup

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

ping ipconfig nslookup

A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?

reconnaissance

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

switch the packet to the directly connected interface