Security+ Chapter 9

8 September 2022
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question
A ________ is a network typically smaller in terms of size and geographic coverage and consist of two or more connected devices. Home or office networks are typically classified as this type of network. - local area network - office area network - wide area network - internal area network
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local area network
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Which of the following is NOT a network topology? - Star - Ring - Integrated - Mixed
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Integrated
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A network protocol is - An agreed upon format for exchanging or transmitting data between systems - A set of rules that employees must follow to accomplish a specific task - One of the layers of the OSI model - One of the headers in an IP packet
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An agreed upon format for exchanging or transmitting data between systems
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The main difference between TCP and UDP packets is - UDP packets are a more widely used protocol. - TCP packets are smaller and thus more efficient to use. - TCP packets are connection oriented, whereas UPD packets are connectionless. - UDP is considered to be more reliable because it performs error checking.
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TCP packets are connection oriented, whereas UPD packets are connectionless.
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Unfortunately hackers abuse the ICMP protocol by using it to - Send internet worms - Launch denial-of-service (DoS) attacks - Steal passwords and credit card numbers - Send spam
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Launch denial-of-service (DoS) attacks
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IP addresses are __________ bit numbers - 6 - 32 - 64 - 128
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32
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A(n) _______ class address supports 65,000 hosts on each of 16,000 networks, and allows three sections of the IP address to be devoted to host addressing. - A - B - C - D
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B
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Network Address Translation (NAT) - Translates private (non-routable) IP addresses into public (routable) IP addresses - Translates the IP addresses of one protocol to the IP address of another protocol - Is one of the items in an IP packet header - Translates MAC addresses to IP addresses
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Translates private (non-routable) IP addresses into public (routable) IP addresses
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Which of the following is a benefit that Network Address Translation (NAT) provides - Compensates for the lack of IP addresses - Allows devices using two different protocols to communicate - It creates a DMZ - Translates MAC addresses to IP addresses
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Compensates for the lack of IP addresses
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Which of the following improves the security of the network by hiding internal addresses? - Antivirus - IDS - Star topology - Network Address Translation (NAT)
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Network Address Translation (NAT)
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All the network components are connected to a central point in which topology? - Star - Bus - Ring - Hybrid
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Star
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Network components connected to the same cable are often called "the backbone" in which topology? - Star - Bus - Ring - Hybrid
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Bus
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What is called when network components are connected to each other in a closed loop, with each device directly connected to two other devices. - Star - Bus - Ring - Hybrid
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Ring
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Which protocol is based on transferring data in fixed-size packets? (The fixed packet sizes help ensure that no single data type monopolizes the available bandwidth.) - AppleTalk - ATM - FDDI - Token Ring
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ATM
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Which transport layer protocol is connectionless? - UDP - TCP - IP - ICMP
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UDP
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Which transport layer protocol is connection oriented? - UDP - TCP - IP - ICMP
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TCP
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All of the following are advantages of TCP over UDP EXCEPT: - Guaranteed delivery - Sequenced packets - Smaller header - Three-way handshake to establish connection
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Smaller header
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The correct sequence of the three-way handshake is - SYN/SYN, ACK/ACK, SYN/SYN - SYN/ACK, SYN/ACK, SYN/ACK - SYN, SYN/ACK, ACK - ACK, SYN/ACK, SYN
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SYN, SYN/ACK, ACK
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Packets delivered to a network, such as an office LAN, are usually sent using the destination system's - IP address - MAC address - Apple address - Logical address
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MAC address
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Which of the following is an example of a MAC address? - 00:07:H9:c8:ff:00 - 00:39:c8:ff:00 - 00:07:e9:c8:ff:00 - 00:07:59:c8:ff:00:e8
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00:07:e9:c8:ff:00
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Which protocol is responsible for resolving an IP address to a MAC address? - DNS - ARP - RARP - ICMP
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ARP
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Packet delivery to distant systems is usually accomplished by the use of - MAC addresses - Domain names - IP Addresses - ARP protocol
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IP Addresses
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Which of the following is a valid IP address? - 192.168.1.1.1 - 10.266.12.13 - 172.11.11 - 12.12.12.12
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12.12.12.12
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Which of the following is not a private IP address? - 10.100.200.100 - 172.32.32.21 - 192.168.1.1 - 192.168.254.254
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172.32.32.21
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The series of worldwide interconnected networks is referred to as the - DMZ - Intranet - Extranet - Internet
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Internet
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A network that lies completely inside a trusted area of a network, and is under the security control of the system and network administrators, is referred to as the - DMZ - Intranet - Extranet - Internet
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Intranet
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The network that is an extension of a selected portion of a company's intranet to external partners is referred to as the - DMZ - Intranet - Extranet - Internet
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Extranet
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A logical implementation of a LAN that allows computers connected to different physical networks to act and communicate as if they were on the same physical network is referred to as a - DMZ - VLAN - Extranet - Tunnel
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VLAN
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Encapsulating packets so they can traverse the network in a secure, confidential manner is referred to as - DMZ - Steganography - Tunneling - Layered defense
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Tunneling
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Networks without any architecture are considered to be poor. True or False
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False
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LAN and WAN networks can be connected. True or False
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True
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A network can logically appear as one topology, but physically match a different topology. True or False
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True
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TCP is connectionless and has lower overhead than UDP. True or False
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False
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UDP uses a three-way handshake to establish connections. True or False
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False
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ICMP is a connection-oriented protocol. True or False
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False
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Address Resolution Protocol resolves a MAC address to an IP address. True or False
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False
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DNS resolves a domain name to an IP address. True or False
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True
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NAT translates private (nonroutable) IP addresses into public (routable) IP addresses. True or False
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True
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A DMZ acts as a buffer zone between the Internet, where no controls exist, and the inner, secure network, where an organization has security policies in place. True or False
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True