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A wide range of topics related to network fundamentals and protocols, including ip addressing, dhcp, atm, file transfer protocols, network documentation, ids sensors, wireless lan configuration, wan topologies, dns resolution, vlans, network load simulation, vulnerability scanning, firewall inspection types, qos mechanisms, virtual network devices, vpn technologies, cable types, network redundancy, security attacks, network appliances, and more. A comprehensive overview of various networking concepts, technologies, and best practices, making it a valuable resource for students and professionals interested in understanding the fundamentals of computer networks and their underlying protocols.
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What class of IP address is 172.16.1.2? - correct answer ✔✔Class B Refer to the exhibit. Consider the topology. What needs to be configured on router R1 in order for the DHCP client to successfully send a DHCPDISCOVER message to the DHCP server? - correct answer ✔✔DHCP relay agent How big is the payload of an ATM cell? - correct answer ✔✔48 bytes Which of the following protocols is used for transferring files with a remote host in a non-secure fashion?
Which of the following wireless LAN (WLAN) security threats is also known as an "evil twin?" - correct answer ✔✔rogue access point In the modern LAN, what type of device is typically used at the center of a star topology? - correct answer ✔✔switch What device is a Layer 3 device that is used to make forwarding decisions based on a Layer 3 address? - correct answer ✔✔router Which of the following UNIX commands is primarily used to resolve a fully-qualified domain name (FQDN) to an IP address and can operate in an interactive mode (that is, you enter this command, receive a prompt, and can then give additional commands)? - correct answer ✔✔nslookup You have a Layer 2 switch. You have left all ports in the default VLAN. You connect five workstations. How many collision domains exist on this switch? - correct answer ✔✔ 5 Internet Protocol (IP) resides at what layer of the OSI Model? (choose 2) - correct answer ✔✔network layer 3 What WAN topology enables you to minimize WAN expenses by not directly connecting any two remote locations? - correct answer ✔✔hub and spoke While more than one of the following Microsoft Windows® commands can be used to resolve a fully- qualified domain name (FQDN) to an IP address, identify the command whose primary purpose is to resolve a FQDN to an IP address (for example, to determine if a Domain Name System (DNS) record is correct). - correct answer ✔✔Nslookup Approximately how many addresses are provided by a Class B scheme? - correct answer ✔✔65, What is a native VLAN? - correct answer ✔✔A native VLAN is the VLAN on an IEEE 802.1Q trunk that does not have any tag bytes added.
Which two of the following are true regarding a client-to-site and site-to-site virtual private networks (VPN)? (choose 2) - correct answer ✔✔A client-to-site VPN (also known as a remote access VPN) interconnects a remote user with a site, as an alternative to dial-up or ISDN connectivity, at a reduced cost. Which Syslog severity level is a condition where a specific operation failed to complete successfully? - correct answer ✔✔ 4 Which type of twisted pair cable has an insulator that is fire retardant and minimizes the emission of dangerous fumes in the event of fire? - correct answer ✔✔Plenum Which of the following are Layer 3 redundancy mechanisms? (Choose 2) - correct answer ✔✔CARP HSRP Which of the following security attacks occurs when an attacker convinces someone to voluntarily provide information (for example, username and password credentials) to the attacker? - correct answer ✔✔Social engineering attack Refer to the exhibit. What command produced the output shown on your Windows workstation? - correct answer ✔✔nslookup Which of the following copper connector types is most commonly used for cable TV connections? - correct answer ✔✔F-connector A corporate e-mail service would be classified as belonging to what Layer of the OSI Model? - correct answer ✔✔Application Refer to the exhibit. In the topology shown, what is the most likely type of network appliance labeled as "Network Appliance X?" - correct answer ✔✔Proxy server Refer to the exhibit. The three wireless access points (APs) in the diagram all operate in the 2.4 GHz frequency band. - correct answer ✔✔
Refer to the exhibit. The three wireless access points (APs) in the diagram all operate in the 2.4 GHz frequency band. Select the three channels that should be used by the APs. - correct answer ✔✔11 6 Which of the following security threats is a program that appears to be for one purpose (for example, a game), but secretly performs another task (for example, collecting a list of contacts from an end-user's e- mail program)? - correct answer ✔✔Trojan horse Which of the following is a type of network interface device (NID) that includes circuitry to perform such functions as converting between framing formats on a digital circuit? - correct answer ✔✔Smart jack Refer to the exhibit. What command produced the output shown on your Windows workstation? - correct answer ✔✔ipconfig/all What technology is typically used in conjunction with DSL? - correct answer ✔✔PPPoE Which of the following can often be categorized as an encryption device (that is, a device capable of participating in an encrypted session)? (choose 3) - correct answer ✔✔VPN connector Router Firewall What device is a Layer 2 device that uses MAC address learning to intelligently forward traffic? - correct answer ✔✔Switch Which of the following is a Microsoft Windows® command that displays what Layer 2 MAC address corresponds to a Layer 3 IP address? - correct answer ✔✔ARP What is the bandwidth of a T1 digital circuit? - correct answer ✔✔1.544 mbps Refer to the exhibit. What type of LAN topology is shown in the graphic? - correct answer ✔✔Star You are configuring a wireless LAN (WLAN) with three wireless access points having overlapping coverage areas. The wireless access points are using the 2.4 GHz frequency band, and are located in the United States. What three non-overlapping channels in the 2.4 GHz band should you select? (choose 3 - correct answer ✔✔11 6 1
Which of the following remote access security technologies is a client-server authentication protocol and uses the concept of a trusted third party (that is, a Key Distribution Center) that hands out tickets that are used instead of a username and password combination? - correct answer ✔✔Kerberos You have a Layer 2 switch. You have left all ports in the default VLAN. You connect five workstations. How many broadcast domains exist on this switch? - correct answer ✔✔ 1 Identify the quality of service (QoS) function that alters bits in a frame, cell, or packet. - correct answer ✔✔Marking What is the common TCP port (that is, "well-known" port) used by HTTP? - correct answer ✔✔ 80 What is the best possible value for administrative distance? - correct answer ✔✔ 0