1. What service daemon can be configured and started so that linuxsupersuser does not have to manage and assign static ip addresses to a network host? 2. The linux firewall daemon iptables can enforce rules on all the following chains except input output route forward 3. As a security measure, all tcp services are protected by tcp wrappers, what two files make up the tcp wrappers? 4. After linux uses the secure shell command to generate a pair of public and private keys what should the user do with the public key? 5. The secure shell daemon, sshd listens whatcp port? 6. A user with the name jsmith will have the default directory ___ assigned to him for private use 7. The first line of a Linux Bash script must be ____ 8. When using the chmod command in numeric mode, the permission r– can be represented by what number? 9. You can manage groups by using the following commmnads except___ groupadd,groupmod,groupdel,grouprm

1. The service daemon that can be configured and started to eliminate the need for managing and assigning static IP addresses to network hosts is the Dynamic Host Configuration Protocol (DHCP) server. The DHCP server automatically assigns IP addresses, along with other network configuration parameters, to devices on a network.

2. The Linux firewall daemon iptables can enforce rules on the input, output, and forward chains. However, it cannot enforce rules on the route chain. The route chain is used for routing decisions and does not directly involve firewall rules.

3. The two files that make up the TCP wrappers are /etc/hosts.allow and /etc/hosts.deny. TCP wrappers provide access control and can be configured to allow or deny connections to TCP-based services based on various criteria such as IP addresses or hostnames.

4. After generating a pair of public and private keys using the Secure Shell (SSH) command, the user should distribute the public key to the servers or systems where they want to authenticate using SSH key-based authentication. The public key is usually added to the authorized_keys file in the user’s home directory on the target systems.

5. The Secure Shell daemon (sshd) listens on TCP port 22 by default. This is the default port used for SSH connections.

6. The default directory assigned to the user with the name “jsmith” for private use can vary depending on the Linux distribution and system configuration. However, a common default directory for user home directories is /home/jsmith or /Users/jsmith.

7. The first line of a Linux Bash script must be the shebang line, which specifies the interpreter to be used for executing the script. The shebang line starts with #! followed by the path to the interpreter. For example, #!/bin/bash specifies that the script should be interpreted by the Bash shell.

8. When using the chmod command in numeric mode, the permission r– can be represented by the number 4. Each permission (read, write, execute) is assigned a numerical value: read (4), write (2), and execute (1). To represent the permission r–, which is read-only, we assign the value 4.

9. You can manage groups using the following commands: groupadd, groupmod, and groupdel. However, there is no command called grouprm in the standard Linux command set for managing groups.

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