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IP is reliable because of ________. A) echo and echo reply messages B) error advisement messages C) both A and B D) neither A nor B MPLS routers base their decisions on a packet’s ________. A) destination IP address B) […]

In this book, we use the terms Ethernet and 802.3 interchangeably. Incompatibilities between signaling systems in United States and Europe cause serious problems. Answer: FALSE In NFC, an attacker several meters away cannot read the transaction. Answer: FALSE Message units […]

Convert a decimal number 15 to the binary number. A) It is a binary number. B) 1100 C) 1101 D) 1111 Four-way closes use ________ segments. A) FIN B) RST C) either A or B D) neither A nor B […]

In IP subnet planning, you need to have at least 130 subnets. How large should your subnet part be? A) 6 B) 7 C) 8 D) none of the above Which of the following uses OFDM? A) 802.11ac B) 802.11n […]

7,000 bps can also be written as ________. A) 7 Kbps B) 7 Mbps C) 7 Gbps D) none of the above Creating effective backup links in RSTP is ________. A) completely automatic B) simple and largely automatic C) difficult […]

In HTTP, the end of a header field is usually indicated by a ________. A) bit position B) CRLF C) colon D) blank line After the data link layer process does encapsulation, it passes the IP packet to the ________ […]

To connect to an access point, you must know its ________. A) SSID B) EUI-48 address C) IP address D) Wi-Fi ID A password-cracking attack that tries all combinations of keyboard characters is called a ________. A) dictionary attack B) […]

For Netflix, ________ is a(n) ________, and ________ is a(n) ________. A) Google, IaaS, AWS, IaaS B) Google, SaaS, AWS, SaaS C) Google, IaaS, AWS, SaaS D) Google, SaaS, AWS, IaaS When a firewall policy server is used to manage […]

BPSK modulation uses two ________. A) amplitudes B) frequencies C) phases D) none of the above Which is NOT one of the three parts of a public IPv6 unicast address? A) subnet ID B) routing prefix C) host part D) […]

Priority addresses the problem of ________. A) momentary traffic peaks B) chronic under-capacity C) both A and B D) neither A nor B The Trojan horse placed on the first compromised GHOSTNET client could ________. A) conduct audio and video […]

BPSK uses ________ phase levels. A) 2 B) 4 C) 8 D) 15 Which of the following layers has more standards than the other three layers? A) data link B) Internet C) transport D) application Answer: D Actions that people […]

To make a forwarding decision, a router looks at the arriving packet’s ________. A) destination IP address B) destination EUI-48 address C) both A and B D) MAC addresses Which of the following can spread more rapidly? A) directly-propagating viruses […]

Spread spectrum transmission is used in WLANs for ________. A) higher transmission speed B) more reliable transmission C) greater security D) more efficient transmission ACLs are used for packets in the ________ state. A) connection-opening B) ongoing communication C) both […]

Strong security is needed to ________. A) collect information from remote switches B) reconfigure remote switches C) have a MIB D) reduce total costs If more users move to an access point, this decreases ________. A) individual throughput B) aggregate […]

Express the mask /18 in dotted decimal notation. A) 255.0.0.0 B) 255.255.0.0 C) 255.255.255.0 D) none of the above Users are primarily concerned with the ________ layer. A) application B) transport C) internet D) physical Answer: A Explanation: A) Users […]

Client PCs must have digital certificates in ________. A) transport mode B) tunnel mode C) both A and B D) neither A nor B Skype offers ________. A) free calling among Skype customers B) free calling to and from Public […]

LAN speeds are faster than WAN speeds. This is because of ________. A) technological limitations B) regulatory limitations C) slow corporate adoption of newer WAN technologies D) economic reasons Throughput is ________. A) the speed a network actually provides to […]

________ are full programs. A) Viruses B) Worms C) both A and B D) neither A nor B An EUI-48 address was formerly called a(n) ________ address. A) IPv4 B) IPv6 C) MAC D) DNS Answer: C What type of […]

________ is a technique for preventing two wireless stations from transmitting at the same time and therefore interfering with each other. A) Creating extended service sets B) Roaming C) The distribution system D) Media access control The password “NeVEr” can […]

For ADSL service, which of the following typically must be added to the telephone system? A) a DSLAM B) a transmission line to the customer premises C) both A and B D) neither A nor B The path that a […]

In IPv6, the payload length gives the number of octets in the ________. A) entire packet B) entire packet minus the main header C) entire packet minus the main and extension headers D) entire packet minus the extension headers A […]

In a four-step close, which side transmits a FIN segment? A) the side that initiates the close B) the other side C) either side D) neither side If your subnet part is 8 bits long, you can have ________ subnets. […]

Which of the following is NOT one of the four major security planning principles? A) perimeter defense B) risk analysis C) comprehensive security D) defense in depth The router selects a row in which the next-hop router is labeled local. […]

What propagation problem becomes worse as there is a large and dense object between sender and receiver? A) multipath interference B) shadow zones or dead zones C) both A and B D) neither A nor B Which of the following […]

In what mode of 802.11i operation is a central authentication server used? A) 802.1X mode B) PSK mode C) both A and B D) neither A nor B E-mail bodies that have non-English text use ________. A) RFC 822 and […]